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The Anti-Spam Research Group's Plan for Spam

egoff writes "Speaking of standards, the ASRG, a member of the IETF, has a plan for "consent-based communications." Among the suggestions, according to Internet Week, are authentication services for falsified addresses, trusted senders, reputation systems (karma?), opt-out tools, best practices for challenge/response, and even a proposal for micropayments on unwanted mail. Instead of defining spam, the ASRG wants to provide administrators and users the tools necessary to avoid what they consider to be unwanted. One of the tools, Reverse MX, is expected to be in place in several months. It would allow the receiving mail server to query a domain to determine if the sending server is allowed to send on its behalf."

225 comments

  1. THAT would be very useful... by WCMI92 · · Score: 5, Interesting

    "One of the tools, Reverse MX, is expected to be in place in several months. It would allow the receiving mail server to query a domain to determine if the sending server is allowed to send on its behalf."

    This would more or less force spammers to send from their own domains... Or from ISP's that are spam friendly.

    It might not STOP spam (though blacklisting would be easier), but it'd make it traceable...

    Which would make it easier to file complaints under the anti spam laws.

    --
    Corporatism != Free Market
    1. Re:THAT would be very useful... by SkArcher · · Score: 1

      Useful, but possible denial of Service attacks by overloading the mail-server with mail?

      --

      An infinite number of monkeys will eventually come up with the complete works of /.
    2. Re:THAT would be very useful... by dzym · · Score: 1
      Not really.

      Most e-mail servers already perform certain checks (including DNS) on the header information in an e-mail. Checking the MX record of the domain in question would just be an extra step.

    3. Re:THAT would be very useful... by Anonymous Coward · · Score: 0

      Problem is .... ISPs, universities, etc. have for several years now configured their SMTP servers to only relay email from their IP blocks as an anti-spam measure. As a result, if I am at home and am using my work email address then I must use my ISP's SMTP server. However, my email address will be my work address. A reverse MX will fail since my work mail server will probably not think it is OK for my ISP's email server to be relaying mail claiming to come from them.

    4. Re:THAT would be very useful... by vanyel · · Score: 1

      Unfortunately, no it wouldn't. A lot of people are multi-homed these days, and legitimately send mail with one domain from an ISP using another domain. A simple case would be someone who has a hotmail account for pseudo-anonymous matters and a real isp email account. They could very well wish to send from their browser's mail client using their hotmail address, while not actually using hotmail to send it (say conversing with a personal respondent they're not sure of yet). Or maybe you're at home and want to send mail on a work-related matter so that the reply goes to your office mail, without going to the hassle of connecting via VPN. Etc.

    5. Re:THAT would be very useful... by Anonymous Coward · · Score: 0

      Or they could simply set up a linux box, ssh in and read their mail with pine. Really, it's not friggin ' rocket science to set up fetchmail to pull the mail out of a pop account. Most distros have ssh as part of the package, ready and in working order.

    6. Re:THAT would be very useful... by leviramsey · · Score: 2, Informative

      Reverse MX lookup wouldn't occur on the From: address (unless an admin is particularly stupid)

      It would occur on the MAIL FROM command in SMTP. There's no reason I can think of to have the domain part be different from something on the same network as the SMTP server.

    7. Re:THAT would be very useful... by Eric+Smith · · Score: 4, Insightful
      Checking the MX record of the domain in question would just be an extra step.
      If you actually read the internet draft in question, you would realize that checking the RMX record (not MX) is an extra step that could be much more effective than the sorts of checks that are done today.

      The reason it works better than existing checks is that it doesn't just verify that the sender's claimed domain exists (has an SOA or maybe MX record), but also if the new RMX record exists, it can verify that the IP address of the initiator of the SMTP connection is authorized to transfer email on behalf of that domain.

      This is a great idea, because it can be phased in gradually. Owners of domain names that are commonly used fraudulently (e.g., hotmail.com) can add the RMX and APL records to their DNS, and then any MTAs that use RMX verification can determine whether the machine sending the mail is authorized. MTAs that don't use RMX are unaffected and will still receive mail regardless of RMX records. If a domain doesn't have an RMX record, a spammer can still forge mail from that domain, because even an RMX-enabled MTA will accept mail from that domain (though if RMX catches on, someday that may change).

      If new versions of MTAs have RMX enabled by default, eventually more and more domain owners will respond to complaints about spam forged from their address by adding RMX records to their DNS.

      Let's hope that sendmail, qmail, postfix, exchange, etc. implement this soon!

    8. Re:THAT would be very useful... by vanyel · · Score: 1
      It would occur on the MAIL FROM command in SMTP. There's no reason I can think of to have the domain part be different from something on the same network as the SMTP server.

      I believe that will show up in the From_ line, which defeats the purpose of trying to hide your identity, and it also requires changes on the sending side, which RMX is trying to avoid (I'm pretty sure most mail transports use the From: in the MAIL FROM by default, though I haven't actually tested it).

    9. Re:THAT would be very useful... by aqua · · Score: 4, Informative

      I do like it as a partial solution (there aren't going to be any good total solutions in this affair). The benefits would probably accrue mainly to the big email services (Yahoo, Hotmail) whose domains are most often forged onto spam. Many people arbitrarily thow away mail purporting to come from there, which must be hurting them in some fashion. Since no one's going to reject mail on the basis of a missing RMX record, spammers will start forging mail from domains having no RMX records at all (or possibly a few serving 0.0.0.0/0 records). So probably not a strong benefit, but it'd help restore the viability of the major email services somewhat.

      I do rather suspect that if RMX authentication were widely deployed we'll see DNS cache poisoning attacks come into vogue again. And if there's a set-in-stone system with an even larger deployed base than SMTP, it's DNS.

    10. Re:THAT would be very useful... by Anonymous Coward · · Score: 0

      The MAIL FROM command is used to populate the return-path, the From: header is in the data section of the email.

    11. Re:THAT would be very useful... by secolactico · · Score: 3, Interesting

      This is where SMTP Auth comes in handy. Have your smtp server authenticate you and allow you to send e-mail from wherever.

      --
      No sig
    12. Re:THAT would be very useful... by keli · · Score: 3, Interesting

      This can be solved by using an authenticating SMTP server or some other way of routing the email through the mail server responsible.

      The problem you mention is more political rather than technical. Or to quote the end of section 10.2 of the draft (emphasis added by me):

      But as I saw from the comments on the first version of this draft, people religiously insist on sending e-mail with their domain from any computer with any IP address in the world, e.g. when visiting a friend using her computer. It appears to be impossible to convince people that stopping mail forgery requires every one of them to give up forging.
    13. Re:THAT would be very useful... by drmofe · · Score: 2, Interesting
      This can be solved by using an authenticating SMTP server or some other way of routing the email through the mail server responsible. The problem you mention is more political rather than technical. Or to quote the end of section 10.2 of the draft (emphasis added by me): But as I saw from the comments on the first version of this draft, people religiously insist on sending e-mail with their domain from any computer with any IP address in the world, e.g. when visiting a friend using her computer. It appears to be impossible to convince people that stopping mail forgery requires every one of them to give up forging.

      Or maybe to recognize that this in fact a legitimate use. The e-mail address adhere to the individual. Why should they not be able to use that as an identifier regardless of where they are? It should be a purely technical issue arranged between the mail servers which messages they agree to carry or not.

      In other words, the example given is not forgery since the person is not pretending to be someone else.

      I rigged up a spam-processing kit last year which incorporated some of the features discussed in the Reverse MX protocol. Damn, I should have written a technical report about it after all...

    14. Re:THAT would be very useful... by keli · · Score: 5, Insightful

      ... but how would you tell the difference? And you would still be able to use your email address as an identifier from anywhere, provided that you use the correct mail server.

      It would also be very convenient if you could change the caller-ID of the phone you are dialling from to your home phone number, when dialling from a friend's house or from work...

    15. Re:THAT would be very useful... by vondo · · Score: 2, Informative
      Exactly. We don't require that if you put a return address on an envelope, that you send it by leaving it in your mailbox at your house.

      I have one e-mail address I use, but travel all over and send e-mail from home. Until recently, I had no access to an authenticated mail server so I HAD to send using postfix on my home machine/laptop/etc. This is very useful to me, less so since AOL started blocking this behavior. Plus, as I understand it, it isn't so useful to spammers since sending all the mail from their own machine still incurs the wrath of their ISP.

      As others have pointed out, though, this doesn't seem to be what RMX is used for. But, will I have to register with my ISP to be "allowed" to send mail? Fat chance I can find anyone who knows enough to do it, let alone a policy that will register me.

    16. Re:THAT would be very useful... by letxa2000 · · Score: 2, Informative
      This would more or less force spammers to send from their own domains...

      I think one of the main benefits, rather than stopping spam or even making it particularly more traceable, is reducing the amount of spam sent with forged return emails. Fact is, we know most spam is forged--the problem is our mail servers don't. Being the victim of some spammer who put your email address as the return address is a bummer and this would help reduce the effects of the undeliverable bounces. Potential receivers would do the reverse lookup, your system would state from the beginning "No, not authorized" and the mail would just be rejected without generating a bounce message back to the purported sender.

    17. Re:THAT would be very useful... by KinkyClown · · Score: 1

      This will not work if they send the email with the return address of the one that is targetted for the spam...

    18. Re:THAT would be very useful... by Fefe · · Score: 1

      Hell, I would implement it for djbdns and qmail any minute, but I didn't see a numerical record number yet, which means I don't know how to query this record type.

    19. Re:THAT would be very useful... by Fefe · · Score: 1

      Some recent viruses mass mailed themselves using other people's domains at random. You might not have noticed this, but my traffic more than quadrupled because of me getting all the bounces -- over 18000 per day.

      RMX would help here as well. And since there is no advantage in adding an RMX record of 0.0.0.0/0 over not adding an RMX record, this is per definition a spammer and his mail can be rejected.

    20. Re:THAT would be very useful... by egburr · · Score: 1

      That is what the Reply-To header is for. Most mail programs recognize the Reply-To header and use it instead of the From header when sending a reply.

      --

      Edward Burr
      Having a smoking section in a restaurant is like having a peeing section in a swimming pool.
    21. Re:THAT would be very useful... by 12AU7A · · Score: 2, Interesting



      I agree...I think it works well as a partial answer. One problem that I don't think is addressed by any of the proposed answers is that many spammers get a new domain for $10, set up their RMX records for it, then blast out a few million emails, close it, discard the domain, and take a fresh one, repeating the process.

      One could argue that a referral based service would prevent ongoing activities from the domain as it would be soon reported to the database and "blacklisted" for unscrupulous activities, but by then, the spam has already been sent.

      Administrators could refuse email from senders without a positive listing in the global database, but this would prevent legitimate new domains from sending mail.

    22. Re:THAT would be very useful... by OhioJoe · · Score: 1

      Fefe hammered home:
      "Some recent viruses mass mailed themselves using other people's domains at random. You might not have noticed this, but my traffic more than quadrupled because of me getting all the bounces -- over 18000 per day."

      True. True. I have implemented a whitelist, that sends all rejected emails (i.e., not a friend or family on my whitelist)an atuo-reply, explaining they failed my filter, and to put "NotSpam" in the subject line to get into my 'Pending' list. This works wonderfully (I never have to peruse the 'rejected' pile to see if friends got rejected, since they will get a reply explaining how to get through my filter), and I have only seen about 2 spams out of about 1600/month I get (and those are from traceable domains, since it took "intelligence" to get past my filter). The downside is what you say, my traffic triples in that I SEND an email for every rejected email, and I get a bounce from over 99% of them (they all use bogus return addresses, by the way, my whitelist proves it, contray to some people's claims that "Oh my! you're letting them know you have a live address!!"). Last, if my 'NotSpam' gets compromised, it's not a big deal. I simply change the rule from "notspam" to "antispam" and edit my "spamreply.eml" to reflect the change.
      Anyway, my whitelist is awesome and works, depsite the nay sayers who have no idea I've been using it for over a year and have proven is works. It just requires an initial time commitement to write the rules, and second to adminsiter valid emails getting rejected for the first few weeks, but after that, it's dreamy. :)

      If I could just get someone to write a plug in to do all the rules (keep in mind, I need separate rules for "Message Undeliverable" and 'out of office" responses so that my autoreply doesn't keep replying to them. Also, every time I get someone in my Pending folder I want to add to my whitelist, I have to fly through 7 or so steps to do that. It'd be nice to have a radio button or "right click-Add-to-whitelist" option. A plug in or stand alone could do that, it's make mroe people want to use it since it is easier, and if lots of people started using it, it'd make spam uneffective.

      But for now, I get to be virtually spam free. It'd just be nice if MS would implement an option whitelist set up like I described.

      OhioJoe

      --
      "Artificial Intelligence usually beats real stupidity."
  2. Isn't it obvious what the plan is for? by Anonymous Coward · · Score: 0

    To get rid of spam!

    1. Re:Isn't it obvious what the plan is for? by Mattygfunk1 · · Score: 1
      I like spam. Hearing the "You've got mail" message all day long makes my coworkers think I'm doing actual work. Seriously.

      Dragon Action Figures

    2. Re:Isn't it obvious what the plan is for? by Anonymous Coward · · Score: 0

      To make somebody rich off patents?

  3. Reverse MX possible problems? by dzym · · Score: 3, Insightful
    Many if not most ISPs have very odd setups for e-mail for load-balancing purposes where outgoing e-mail does not go through the same SMTP server that incoming mail heads into. I wonder how that will affect this system?

    This new mechanism will help eliminate forged e-mail from-fields though, and allow for easier message filtering.

    1. Re:Reverse MX possible problems? by oolon · · Score: 1

      Thats why they want to add RMX, rather than just using the MX addresses in reverse. Cos a valid sender does not have to be valid for receiving.

      James

  4. Well, well. by Faust7 · · Score: 0, Troll

    "One of the advantages we have is that the entire community is involved," said Judge

    No comment. None at all. :)

    1. Re:Well, well. by AndroidCat · · Score: 1
      These people can't even work out an org chart for their tangle. Strictly speaking, the ASRG is an IRTF group, not an IETF one.

      rfc2014 The IRTF focuses on longer term research issues related to the Internet while the parallel organization, the Internet Engineering Task Force (IETF), focuses on the shorter term issues of engineering and standards making.

      It'll be interesting to see what short-term solutions to spam they can come up with.

      --
      One line blog. I hear that they're called Twitters now.
    2. Re:Well, well. by Zeinfeld · · Score: 1
      "One of the advantages we have is that the entire community is involved," said Judge
      No comment. None at all. :)

      Ah, maybe you are another of the people Paul has identified as a competative threat and ejected from the group.

      Basically the ASRG has become just a PR machine for Ciphertrust. All but one of the competing anti-spam vendors found that their email was being 'moderated'. As a result the ASRG now consists of essentially five people.

      One of the members of the group basically set out from the start to make sure it would fail. He is well known in the anti-spam world and does not want a rival to his own scheme. So every proposal that anyone made was attacked on any and all grounds, repeatedly in pretty unpleasant terms. People were called liars and worse. So Judge decided to moderate the folk who were being attacked but not the person deliberately trolling, why?

      ASRG does not have the whole community involved, it does not even have a single one of the major ISPs, let alone a major software vendor involved at this point.

      The ASRG has from start to finish been nothing but a vehicle for ciphertrust's publicity interests. No research has been allowed, that would risk an idea being proposed that competed with ciphertrust's product.

      The IRTF chair is aware of the situation and the group is probably going to be terminated or radically re-organized in the near future.

      --
      Looking for an Information Security student project suggestion?
      Try http://dotcrimeManifesto.com/
  5. Cooperate and I'll Read by AvantLegion · · Score: 5, Interesting
    You know, I wouldn't mind receiving advertisements in email if:

    1. They were about things I gave a damn about
    2. They were marked (like ADV:) for easy filtering

    What bothers me about spam are the violations of those two. I don't want emails about printer toner, or bigger schlongs. And I don't like having ads clutter up my inbox, where email from people I know and such belongs.

    But if I could filter it all into an "Ads" mailbox, just like I have mailboxes for various mailing lists, I would scan the offers about stuff I might actually want. I'd be much more inclined to "click through" then, while my all-time number of click-throughs of spam email to date totals 0.

    1. Re:Cooperate and I'll Read by Daniel+Phillips · · Score: 2, Insightful

      You know, I wouldn't mind receiving advertisements in email if:

      1. They were about things I gave a damn about
      2. They were marked (like ADV:) for easy filtering

      What bothers me about spam are the violations of those two.


      That's just you. For many people, the mere volume of unwanted traffic is a major problem. Consider somebody in a third world country[1] on a slow dial-up connection for which they have to pay enormous amounts of money in local terms. Or somebody who has to use webmail, with an awful inefficient interface, because they can't afford a regular ISP.

      [1] Or Germany, until recently!

      --
      Have you got your LWN subscription yet?
    2. Re:Cooperate and I'll Read by Eggplant62 · · Score: 5, Insightful
      But if I could filter it all into an "Ads" mailbox, just like I have mailboxes for various mailing lists, I would scan the offers about stuff I might actually want. I'd be much more inclined to "click through" then, while my all-time number of click-throughs of spam email to date totals 0.
      Why not just be honest. Didn't you really mean to say /dev/null? Ads mailbox my ass. IF I WANT IT IN MY MAILBOX, I'LL SIGN UP TO IT. OTHERWISE, KEEP THE FUCK OUT. Marketers don't realize that I'll allow free access to friends, relatives and anyone else I've had an existing business relationship with. All others can pay ME to use it or subsidize my ridiculously expensive internet bill, which their current efforts are what keeps it so friggin' high in the first place.

      Christ, who do you think is paying for any of this shit? US!!
    3. Re:Cooperate and I'll Read by alienw · · Score: 1

      How much do you pay for email? Come on, stop bullshitting. As far as I know, most email providers are either free (hotmail) or flat-rate (your ISP), regardless of volume. Also, if you take basic precautions (like not posting your email address in robot-readable form), you will not get more than one or two spams a month.

    4. Re:Cooperate and I'll Read by ryanvm · · Score: 4, Funny

      I don't want emails about printer toner, or bigger schlongs.

      I thought I was getting 50 spam messages a day before I found out that it was just my wife trying to get me a bigger dingus.

    5. Re:Cooperate and I'll Read by AvantLegion · · Score: 1
      I'm not saying I wouldn't be happy with 0 spam, but that's not likely to happen. I'd at least appreciate a decent middle ground.

    6. Re:Cooperate and I'll Read by AvantLegion · · Score: 1
      Ads mailbox my ass.

      If it's not in the Inbox, it's not hurting me. I already have a Spam mailbox where my pretty successful mail filters route junk mail. I go through it pretty routinely, and even occasionally look at things.

      But part of the point is that people could send it to /dev/null instead of an Ads box if they wanted.

      Spam's not going to go away entirely, because people actually read it and click through 'em. If they had 0% response rates, they would give up. If you could set 1 filter that takes care of all unsolicited email (be it forwarding to a mailbox or deleting it), then there would be no reason for you to whine.

      Frankly, I'm tired of finding out about *actual* great deals online that I already missed out on. If THAT info made it to my Ads box, then I'd be happy.

    7. Re:Cooperate and I'll Read by mdfst13 · · Score: 1

      And the flat rate is determined by what? Yes, average cost. Considering that 2/3 of email traffic is spam, they should at least be able to cut costs by a 1/3 if a method was found that eliminated say, 90% of spam.

      Also, your "precautions" involve avoiding things that in many cases, I would like to do. I want to be able to post my email address in a machine readable form so that possible employers/customers can reach me. Also, once you get on the list (which even if with full precautions can happen; if I disseminate my email address, it offers people the chance to do stupid things with it; remember CrushMatch?), it is impossible to get off without abandoning the email account.

      It's not just the cost of my processing the email. I have already lost a consulting job because the person to whom I sent an email did not recognize that email address and deleted it. That is a lost opportunity that is caused by the fact that there are no controls on spam.

    8. Re:Cooperate and I'll Read by ColaMan · · Score: 2, Informative

      How much do you pay for email?

      I can tell you how much I've paid for spam delivery :
      My "Junk Mail" Maildir folder is 42788 kbytes - it contains 4439 messages, dating back to 22/08/2001.
      Data on my permanent modem connection via Tel$tra is 15c / Megabyte.

      So it's cost me a total of $6.41, over the past two years or so.

      4439 emails in 22 or so months is 200 per month. Seeing as my email address is a business address, I'd like it to be available to people, so ordinary "keep your email secret" advice is not really good. And as we all know, once you get those one or two bits of spam a month, it's only a matter of time before the deluge begins and you're getting "HOT TEEN FARM ANIMAL RAPE SEX!" and the like delivered daily.

      --

      You are in a twisty maze of processor lines, all alike.
      There is a lot of hype here.
    9. Re:Cooperate and I'll Read by sleeper0 · · Score: 1

      wow i envy you. I get between 60-100 spam mails a day, no exageration at all. I'll get 3-5 pieces of non-spam mail each day.

      Some of these systems look promising but to be honest bayesian filtering like is present in popfile and spamassasin was my savior. Spamassassin was OK before bayesian filtering but now that it has it too it catches every piece of spam i get, possibly missing 1 per day though many days it doesnt miss a piece.

      I strongly reccomend anyone wanting to filter spam to look into one of the many bayesian filter programs, it may take a few hours to set up and occasionally need a minute or two to keep it trained but it's performance is so good it feels like magic.

    10. Re:Cooperate and I'll Read by alienw · · Score: 1

      A T3 costs the same whether you use it or not. I don't think that email makes for a huge part of an ISP's bandwidth bill. They might be able to lower the cost by 2% or so if their message volume was reduced 60%. Remember that your ISP probably spends most of its money not on bandwidth, but on employees, salaries, buildings, etc. Of the bandwidth, most of it is probably taken up by hosting and web access, not email. Besides, why would I care that my ISP reduced its costs by 1/3? They won't pass those savings on in any case.

    11. Re:Cooperate and I'll Read by mdfst13 · · Score: 1

      That assumes that you are using an ISP that is small enough that a single T3 is sufficient. Instead, consider a company like godaddy.com which is much larger. I hardly bother to read my ISP email address. Instead, I maintain a Yahoo address (for spam collection) which I use to sign up for services, and a permanent address for which I pay an annual fee. That fee is based purely on email server management. That is what I expect to drop by a 1/3 if their spam burden is lower.

      Also, spam periodically has the effect of DOSing email servers. This also increases their costs. Along with filtering, letters to abuse, etc. All that requires more personnel, space, and servers than they would otherwise need.

      You are correct, at an ISP with spare resources price will not be affected by this. However, larger ISPs do not have slack resources. Increased traffic means that they have to increase resources (spending). Since they are highly competitive (I can use any email server on the internet), these costs will be passed on to the consumer.

    12. Re:Cooperate and I'll Read by letxa2000 · · Score: 1
      How much do you pay for email? Come on, stop bullshitting.

      I'll tell you the truth... the cost of spam to me is much larger in terms of the time I spend dealing with it (deleting it, etc.) than the cost in bandwidth or CPU time. I'm set to receive 3000+ spams in May. Call it 10 seconds per spam. Why 10? Because spam doesn't come in all at once to delete at once--it comes in throughout the day, interrupting my work. So, yes, 10 seconds per spam. 3000 * 10 = 30,000 seconds per month. That's over 8 hours per month wasted on spam. A full work day. I consult at $100/hour so spam is costing either me or those who hire me as a consultant $800/month or $8400 a year. That's no bullshit.

      That said, it's no longer a problem for me. Bayesian is letting about 5 to 10 spams per month rather than 3000. But that doesn't mean that the cost of spam is insignificant, I've just taken measures to reduce its impact on me.

    13. Re:Cooperate and I'll Read by ColaMan · · Score: 1

      I use bogofilter to filter things out. It's not too bad, I have it setup on my IMAP server so a folder called "missed-junk" in my IMAP tree is checked every hour, and emails in there are added to the spam database.

      The wordy, "conversation-like" spam is starting to slip through a bit, but the 10 or so bits of spam gets dropped to one or two, which is a good improvement. The only real reason I keep the 4000-odd spam messages around is to train new versions of bogofilter with.

      --

      You are in a twisty maze of processor lines, all alike.
      There is a lot of hype here.
    14. Re:Cooperate and I'll Read by Fefe · · Score: 1

      You know, I would mind.

      I am paying for my incoming email bandwidth with money and time. I am not willing to read anyone's commercials or newsletters in email.

      If I were interested in their crap, I'd check their web site.

    15. Re:Cooperate and I'll Read by Eggplant62 · · Score: 1
      How much do you pay for email? Come on, stop bullshitting. As far as I know, most email providers are either free (hotmail) or flat-rate (your ISP), regardless of volume. Also, if you take basic precautions (like not posting your email address in robot-readable form), you will not get more than one or two spams a month.
      You miss the point, my comprehension-challenged friend. Yes, I pay for email via the fee I pay to my ISP. You pay for your email via a fee you pay to your ISP. When was the last time that fee went down? Also, not everyone lives in an area (think Europe here) where they can get an unmetered internet account (also think business-class T1 or better where they charge extra rates for traffic over a certain cap). Those people are bearing the brunt of the costs of the spammer's need for their message to get as many eyeballs as possible.

      That is what I'm pissed off about.
    16. Re:Cooperate and I'll Read by Eggplant62 · · Score: 1
      Frankly, I'm tired of finding out about *actual* great deals online that I already missed out on. If THAT info made it to my Ads box, then I'd be happy.
      *CACKLE*! When was the last time that happened? The only time I've gotten something similar is on a list to which I signed up. Ticketbastard, for example, sends out an occasional newsletter listing events that take place close to home as a result of my buying concert tickets through their online service. Great, wonderful, I like that.

      What I don't like, however, is some idiot scraping my email address from my USENET posts and sending along whatever goatse.cx photos they happen to have handy at the time they created their "ads".
    17. Re:Cooperate and I'll Read by jefu · · Score: 1
      I posted something to a recent slashdot article on spam suggesting that we might be treating open relays in the wrong way.

      If there were a bunch of open relays that would accept and relay mail and on the way run it through a spam filter - and instead of dropping it, just label it with "SPAM (was ...) " in the subject line, we could accomplish exactly the same thing - but without requiring the spammers to do anything.

      the slashdot article
      The notion of rewriting the mail (though my suggestion is more about putting a wrapper on the mail) is in the second article.

  6. there should be... by Anonymous Coward · · Score: 0

    ....a return to sender for unsolicited emails

  7. anything is better than the toll methods by cheezus_es_lard · · Score: 3, Insightful

    I have a real aversion to the idea of paying to send email of any type, so any method that is not in that vein is progress in my opinion.

    1. Re:anything is better than the toll methods by shird · · Score: 1

      Would you rather pay to receive e-mails? including spam? Because that is what you are doing at the moment, regardless of whether you pay a flat rate or not, the cost is being passed onto you.

      The cost to send email could easily be included into your ISPs monthly bill, even as a flat rate. For example, they could give you 100 free email sends per month, and charge a flat rate. If you go over, then they start charging per email, similar to bandwidth control. Doesn't affect the average user, but would be prohibitively expensive for a spammer sending millions of emails a day.

      --
      I.O.U One Sig.
    2. Re:anything is better than the toll methods by JuggleGeek · · Score: 1
      I'm not very worried about micropayments. Mostly because I don't think they will become very common.

      Basically, in order for a micropayment system to work, you have to have some kind of authenticated system that lets you tell who sent the email. Otherwise, you don't know who to bill. Once the mail is authenticated, blacklisting sources of spam gets fairly easy, and the micropayments aren't necessary.

      Also, most proposed micropayment systems don't actually charge per email for every email. They charge for every email over the first 1000 per month, or they charge only for emails that the recipient decides "They should have known not to send me that, and I'm going to make them pay for it". From what I've read, most average users aren't going to end up paying, even assuming micropayments become popular.

      I dont think they will. Once the technology is there which makes them possible, they really aren't going to be needed. And unless all ISP's are using the same micropayment system, the system won't work anyway.

  8. good incremental approach by rossjudson · · Score: 4, Interesting

    I like the idea; the problem is getting uptake on it. You need to encourage a lot of people. The way to do this is to get the "big" ISPs in on the scheme immediately. Participants should alter their mail transfer programs to tag the SUBJECT line of the messages with the word Untrusted. This will cause receivers to know, and significant embarrassment for those not participating...which will cause their mail system to be upgraded to participating status.

    Unless the bad effects of not participating are directly visible (as in subject line), it's gonna take too long.

  9. inevitable by falsification · · Score: 5, Interesting
    It's inevitable. E-mail as we know it is going away.

    Spam is now the enemy. It must be destroyed. Here comes the IETF to solve the problem.

    SMTP Next Generation is on its way. The only question is the exact design. The general outline is already known. First, there will be real-world verification of identity tied to every account capable of sending SMTP NG e-mail. There will be a transition period where people can sign up for "upgraded" (NG) e-mail accounts; then, a period where these "upgraded" accounts can receive e-mail from other NG accounts as well as from old, potentially anonymous accounts. Business and government users will transition to NG.

    Then, there will be an Internet-wide deadline, upon which all NG e-mail addresses will be unable to receive e-mail except from other NG addresses. All SMTP old generation traffic will be blocked. The old base of mail users will be forced to transition to SMTP NG. At this point, if there is ever a complaint about spam, the spammer can be tracked down and booted off Internet e-mail forever. As a result, spam will cease to exist.

    The day the Internet died. Sure, it will be more "efficient" then. No spam. But it won't be free.

    Don't cry about it. It happens to all technology. Those who need anonymous communications will just move to something else. Maybe web-based discussion, for example. Just no more truly private, truly anonymous, or truly free e-mail.

    Coming soon to your neighborhood.

    1. Re:inevitable by bobbozzo · · Score: 5, Insightful
      Just no more truly private, truly anonymous, or truly free e-mail.

      E-Mail isn't anonymous, and never has been, (your IP is traceable back to you) unless you use an anonymous remailer.

      If SMTP2 or whatever is successfull, then people will make anonymous remailers for it.

      --
      Nothing to see here; Move along.
    2. Re:inevitable by WCMI92 · · Score: 2, Interesting

      "The day the Internet died. Sure, it will be more "efficient" then. No spam. But it won't be free.

      Don't cry about it. It happens to all technology. Those who need anonymous communications will just move to something else. Maybe web-based discussion, for example. Just no more truly private, truly anonymous, or truly free e-mail. "

      Why? People can communicate more or less anon they way I have been FORCED to communicate already (since my e-mail account is virtually useless)...

      Message Boards

      Instant Messenging, etc.

      --
      Corporatism != Free Market
    3. Re:inevitable by falsification · · Score: 1
      Yes, it is anonymous. IP address != real-world identity. If not, then please tell the FBI how to track down Al Qaeda.

      Obviously, the point of an SMTP NG would be to prevent all anonymous remailing by requiring a valid real-world identity to send any and all SMTP NG mail.

    4. Re:inevitable by evil_mojo_jojo · · Score: 1

      And it will be a shining success like IPv6, and the communist state will wither away, and we will all eat ice cream.

      Any proposal that defines an "NG" where there isn't a gun being held to everyone's head to jump to the "NG" will be doomed to failure. About the last successful "NG" transition in the internet was BGPv3 to BGPv4, which /had/ to happen so we could implement CIDR, otherwise we would have run out of routing table space and addresses. That succeeded because less than 100 major entities needed to make the change, and they were fiscally motivated to do so (otherwise they would have had dead Cisco AGS+ routers in 18 months).

      Right now, there isn't a big enough hammer to solve this problem, and backwards compatibility is considered desirable. Look at open relays...why do spammers still use them? If everyone looked at ORBS/SPEWS/RBL lists they would cease to be valuable. However, if an administrator can't even fix their open SMTP relay, how are they going to upgrade to a version of BIND that supports RMX records?

      For e-mail authentication and accountability to work, everyone needs to do it. Right now, SPAM isn't enough of a hammer to force folks to do it. Hell, I never see SPAM anymore, I've got spamassassin and I update it every time a new release comes out in Debian/unstable. That's less trouble for me than waiting for the rest of the world.

    5. Re:inevitable by KC7GR · · Score: 1

      User 'falsification' wrote...

      "The day the Internet died. Sure, it will be more "efficient" then. No spam. But it won't be free..."

      Actually, to my mind, the original Internet "died" when the NSF's controlling influence went away in the mid-90's, taking their prohibition against commercial traffic with it.

      I think if they, or the IETF, had simply thought ahead about the likely consequences of opening 'net access to the "consumer" arena, to people who probably didn't even know what the term 'Internet' meant, they would have thought twice about simply throwing the barn doors wide open.

      I've always believed that there should have been some sort of multi-tier licensing system -- one level for end users, another for those who run servers, perhaps another for ISPs -- for ANYone who wanted 'net access.

      If that kind of basic screening had been implemented from the word 'Go,' if for no other reason than to provide a path of accountability for one's own online actions, I don't think spam would be anywhere near the nightmare it is today.

      User 'falsification' continued:

      "Don't cry about it. It happens to all technology. Those who need anonymous communications will just move to something else. Maybe web-based discussion, for example. Just no more truly private, truly anonymous, or truly free e-mail..."

      If spam keeps up at its current rate, E-mail will be rendered useless in any case. It's damn near that point now.

      As for anonymizing, it's easy enough to encrypt your E-mail. PGP and GNU-PG still work, no matter who's using them. The only thing that shows up in the clear under such a system is your E-addy, that of the recipient, the datestamp, and maybe the subject line. That info has, to the best of my knowledge, never been anonymous.

      As for the 'net being "free," in the sense of freedom, remember that along with freedom comes responsibility; to yourself, to others around you, and to your environment. One who is truly responsible will measure, in their own mind, how their actions affect those around them, and will act accordingly.

      Those who send spam, no matter if it's some college student floating a get-rich-quick chain letter or a (supposedly) reputable company like Microsoft or Network Associates (yes, both of them do spam), have clearly demonstrated that they are not responsible because they do not care. They don't care how their abusive behavior affects the rest of the 'net, and they don't care about the private property (servers, routers, bandwidth pipes) of others.

      They care only about one thing; making as many $$ as they can in the shortest time possible, often by ANY means.

      I still believe that spam is more a social problem than a technological one. If it were purely technological, it would have shown up prior to the Internet's barn doors being thrown wide open to anyone with a credit card and a cheap computer.

      Because of this belief, I question whether the IETF's proposed changes, as strong as they have the potential to be, are really going to help. Personally, I'm not holding my breath.

      I will, however, do what it takes to keep my servers connected and running. If that means going along with changes that I don't think, in the long run, are going to make much difference, then so be it.

      Put another way: I would far rather see spam blown out of existence by the proposed authentication mechanisms, even if it means the loss of anonymity or "freedom," than see E-mail itself go down in flames because a bunch of greedy and irresponsible people (and I use the term loosely in referring to spammers) couldn't keep themselves under control.

      Keep the peace(es).

      --

      Bruce Lane, KC7GR,

      Blue Feather Technologies

    6. Re:inevitable by Technician · · Score: 1

      E-Mail isn't anonymous, and never has been.

      This might be true if you have a static IP using a network card with a MAC address, But I still use dial up. I get assigned a new IP each time I call in. My modem does not have a MAC address. I can forge any address of any user on the domain (or make up one). You may be able to detect the Domain ISP I use, but my identity could be a little more difficult. Especialy so if I call in on a rented /borrowed cell phone with a false login.
      (No I don't do this so don't flame away. I've tried to trace obnoxious spammers and this is part of what you run into.)

      --
      The truth shall set you free!
    7. Re:inevitable by Anonymous Coward · · Score: 0

      They would only have one problem - getting the local (al-qaeda friendly) authorities to cooperate.

      However, you've been watching way too much american TV, with all their "blame the internet" crap. Al Qaeda uses secure, untracable methods of communication, not anything with a source IP-address. Way too insecure, if you don't want to get caught.

    8. Re:inevitable by Anonymous Coward · · Score: 0

      With IP-adress and time, your ISP can tell exactly which customer (and probably also phone number) had that IP. They cannot tell who used the computer, but they can tell whose password was used.

    9. Re:inevitable by Carlos+Laviola · · Score: 1

      Speaking as someone who works at an ISP, we can also trace the phone numbers, which can be used by authorities and so on.

    10. Re:inevitable by mors · · Score: 1

      The IP address you get can be linked to your ISP, which no doubt has a log showing who had which IP address when, so you are not truly anonymous.

    11. Re:inevitable by kmilani2134 · · Score: 1

      A Next Generation e-mail infrastructure is unlikely to have much of an effect on spam as long as there is still motivation for spammers to take the time to figure out how to beat the system. For instance, there are tens of thousands of zombie machines on the Internet which could be used as launching points for spam. Unfortunately, this means that spam will be traced back to innocent people and not the real spammers. There are solutions worth pursuing, and others that aren't. IMHO solutions that are totalitarian, or that move us closer to a police state either through code or through legislation should not even be considered. Giving up our privacy and our rights in an attempt to stop spam is not worth it, especially if there is the possibility that it won't work. I may be mistaken as I am not an Historian, but it seems that once we give up rights, it is unlikely that we will ever get them back.

      --
      Those who trade freedom for security will lose both, and deserve neither" -- Ben Franklin
    12. Re:inevitable by Anonymous Coward · · Score: 0

      Al Qaeda suspect Moussaoui used e-mail. His address was ----@hotmail.com. http://www.caci.com/homeland_security/moussaoui_8. shtml

  10. Great article on RMX by mfago · · Score: 5, Informative

    Great write-up on RMX, brought to you by the same guy who came up with an easy way to snapshot.

  11. Short lived phenomenon by ObviousGuy · · Score: 5, Interesting

    Spam is simply not profitable enough to last much longer. It is the last of a dying breed of pioneering Internet money-making schemes like the pyramid scheme emails and banner ads. Eventually the spammers will move on to other means of money making because their revenue is guaranteed to drop off as their tactics turn more and more people off.

    Instead of fighting the good fight here, the best thing to do is let this dying ember peter out on its own. Forcing spammers to use more drastic tactics just results in them doing more harm in the long run. If there had been no resistance at all, we'd probably be seeing a much more mature and respectable online advertising industry instead of the random, haphazard, and very annoying multitude of spam king wannabes downloading their spam kits and setting up shop.

    --
    I have been pwned because my /. password was too easy to guess.
    1. Re:Short lived phenomenon by WCMI92 · · Score: 1

      "Instead of fighting the good fight here, the best thing to do is let this dying ember peter out on its own. Forcing spammers to use more drastic tactics just results in them doing more harm in the long run. If there had been no resistance at all, we'd probably be seeing a much more mature and respectable online advertising industry instead of the random, haphazard, and very annoying multitude of spam king wannabes downloading their spam kits and setting up shop."

      MATURITY? From people that send me dozens of "enlarge your penis NOW", "Firm D cup tits in 2 weeks" (great research there), etc crap??!

      Fact is, MATURE, repsponsible businesses dont' ADVERTISE in ways that obstruct and annoy their prospective clients.

      Note the high regard that telemarketers are held in. And they are 10 to the power of 90 more "mature" than the spammers...

      Not fighting spam would lead to more spam.

      Fighting spam leads to more spam.

      Why? Because the spammers themselves are inmature ASSHOLES who care more about making a fast buck than they do about the rest of humanity. Fighting spam at least makes it HARDER for them to do so, and costs them money. It's about the ONLY way to cost them money, as already their victims bear most of the cost of their shit.

      --
      Corporatism != Free Market
    2. Re:Short lived phenomenon by 0WaitState · · Score: 2, Insightful

      Sorry, but spam won't peter out until we run out of idiots--after all, the best way to make money spamming is to sell tools and lists to spammer wannabes.

      Given the hordes of people yet to go online, I don't think we'll run out of idiots in out lifetime.

      --

      Remain calm! All is well!
    3. Re:Short lived phenomenon by shird · · Score: 1

      And what happens when it dies off? People start trusting and using email a lot more, and depend on it as a reliable communication medium. great, right? yeah, except once that happens, spammers come back and abuse this medium that people have come to trust and look to for informed opinions.

      Just like advertising in capitalist environments, if everyone would stop advertising we would all be on level ground and be at the same place we are with advertising, but without spending any money... but then the one guy who decides to advertise monopolises the market, so everyone does it to stay in the game.

      In theory, communisim works... in theory.

      --
      I.O.U One Sig.
    4. Re:Short lived phenomenon by axxackall · · Score: 1
      If there had been no resistance at all, we'd probably be seeing a much more mature and respectable online advertising industry instead of the random, haphazard, and very annoying multitude of spam king wannabes downloading their spam kits and setting up shop.

      You forgot another advises:

      • don't lock the car. If there had been no resistance at all, we'd probably be seeing a much more mature and respectable "used car utilization" industry instead of the random, haphazard, and very annoying multitude of car thiefts stealing our cars, reaping them apart and selling all parts separately.
      • don't lock the home. If there had been no resistance at all, we'd probably be seeing a much more mature and respectable "house cleaning" industry instead of the random, haphazard, and very annoying multitude of house theives stealing our stereo.
      • don't use PINs on CCs. If there had been no resistance at all, we'd probably be seeing a much more mature and respectable "investment of unused money" industry instead of the random, haphazard, and very annoying multitude of stealing our money to spend them on porno sites.

      Personally, I want to see the ad industry nowhere - I don't need any advertisement, all I want information. As for today, my postal and electronic mail boxes are full of repeatable and useless ads, while it's still hard to find on internet any useful information about products and services.

      --

      Less is more !
    5. Re:Short lived phenomenon by cushty · · Score: 1

      Spam is simply not profitable enough to last much longer.

      I can't see how this is true. 40% of all email is considered "spam" with the prediction that this figure will rise to 80% in 2008. If it were the case that it is not profitable then spammers would stop doing it and find other ways of making money; after all, they are "business" people.

      Remember that they are sending an email for something that might be $30, of which they get a percentage of each sale (I would assume). They send it to several million people with, say, the chance that 99% of them will bin it before reading it. Of the remaining 1% that read it 1% might take up the offer. So you're talking about 0.01% (if my maths is right) of several million people, which is still in the 100's. To send the mail it cost them a few dollars, and they've likely made tens of dollars.

      What the ASRG appears to be doing is making the cost of sending the email in the first place more "expensive" (and I don't necessarily mean financially) so that, for the average user, this has only a small effect, but for someone emailing millions of people every day it has a profound effect: it drives them into unprofitability.

    6. Re:Short lived phenomenon by bogado · · Score: 1

      I disagree with, at least here in Brasil, well Rio de Janeiro, telemarketers call your home and ask for the telephone owner, I know because my telephone is listed in my father's name, but I don't live with him. When you ask what is this about they ask that is personal and if you say that this person does not live there, they have the nerves to ask for the phone. Oh shure I will give them the phone...

      By all means this is not very mature in my book.

      --
      []'s Victor Bogado da Silva Lins

      ^[:wq

    7. Re:Short lived phenomenon by ragnar · · Score: 1

      I'm not willing to bet the future of email on the chance that every two-bit swindler will arrive at the conclusion you lay out. Sure, after sending 500 million spam messages he or she may throw in the towell, but by then the damage is done.

      As a medium of communication Email is seriously threatened by spam. I used to swear by it, but these days if I really need to communicate I make sure that someone also knows my phone number. When I'm distributing my resume (to employers... don't worry, I'm not spamming it) I fear that my spam filter will be too agressive. I'm certainly not in the minority, and I hate how spammers are ruining my preferred communication medium.

      Although their business model is crappy, I don't think spam is going away on its own accord. My preference is an intelligent technical solution. (for the record, I've used nearly every filtering technique and am about to go the whitelist route)

      --
      -- Solaris Central - http://w
    8. Re:Short lived phenomenon by eaolson · · Score: 1
      Spam is simply not profitable enough to last much longer. It is the last of a dying breed of pioneering Internet money-making schemes like the pyramid scheme emails and banner ads.

      Well, that sure explains why offline pyramid schemes are sure dying off real quick. And banner ads? Surely there aren't any sites that use those anymore.

  12. RMX sounds kewl, but... by Anonymous Coward · · Score: 4, Interesting

    Here's your fly in the soup:

    It only works when receiving mail with an forged and uncooperative sender-address. Nothing will prevent a spammer listing 0.0.0.0/0 as authorized sender addresses provided he controls the DNS for the envelope-sender. /me sees domains like a cat walking on your keyboard being used as throw-away domain for spamming. (lkjshret.com IN RMX 0/0)

    It will increase the cost of a spam-run, and that's good news. On second thought: I like it.

    1. Re:RMX sounds kewl, but... by oolon · · Score: 4, Insightful

      No you miss the point, the point is to check the from/sender address is valid. Yes a spammer can use THEIR domain from any machine, so what? They have to identify their domain. Not my domain for the receiver to accept their email. Yes they can set it up and I will get the spam but for the first time I will be able to trace where it came from. Ah but you say they just bought the domain on a stolen CC card yes perhaps they did but we are starting to get a paper trail to the spammer who would also be a criminal if they did that.

      This is a first step to fighting spam "knowing your enemy", war will continue.

      James

      James

    2. Re:RMX sounds kewl, but... by rog · · Score: 2, Insightful

      It still doesn't make sense. You're asking admins with open relays to make DNS changes. If they don't want to close their open relays, what makes anybody think they'd be willing to make a DNS change?

      Sounds like the "Evil Bit" RFC -- it would work fine if we could just get all the bad guys to cooperate.

      --
      Saving random seed...
    3. Re:RMX sounds kewl, but... by Anonymous Coward · · Score: 0

      Why? because you no longer have to actively find out if they are an open relay.

      If they dont have the RMX record, you dont accept mail their mail.

    4. Re:RMX sounds kewl, but... by secolactico · · Score: 2, Interesting

      and a big plus: no more innocent third parties.

      Forged headers not only is an annoyance for the target of the spam, but the admin of the domain that was (falsely) used as a return address will not have to contend with thousands of bounced notices/abuse complaints.

      --
      No sig
    5. Re:RMX sounds kewl, but... by keli · · Score: 1

      ... and the poor users whose email addresses got forged don't get bogged down with bounces and complaints from recipients, who don't realize that the from address was faked.

      (It has happened to me a few times. The bounces were annoying, but the death-threats were just plain scary.)

    6. Re:RMX sounds kewl, but... by keli · · Score: 1

      No, this is not another way to block open relays.

      This is a way for domain owners to (eventually) prevent spoofing of email addresses comming from their domain.

      It's the owner of the domain, that changes his DNS not the open relay operator.

    7. Re:RMX sounds kewl, but... by Anonymous Coward · · Score: 0

      I think you missed the point a little bit... it's not admins with open relays who are going to set up RMX records to verify their mail IPs, it's going to be all admins who don't want spammers to be able to impersonate their domains.

      The idea is that, before the recipient accepts the message, the recipient contacts the authoritative DNS server from the domain the message came from, to verify that the IP the message came from is legitimately allowed to send mail on behalf of that domain.

      It's not about catching open relays, but e-mails that forge their domain addresses (messages that purport to come from mydomain.com but are sent from some IP actually belonging to spammer.cx). Of course, if every message that came in was sent from an IP registered to a legit domain, then that would probably make it a whole lot easier to pinpoint and blacklist those folks running open relays too...

    8. Re:RMX sounds kewl, but... by B.D.Mills · · Score: 2, Informative
      Nothing will prevent a spammer listing 0.0.0.0/0 as authorized sender addresses

      Then you just block that email because the RMX record lists too many valid IPs.

      From the RMX document, chapter 7 (Enforcement policy)


      Domain owners will still be free to have an RMX record with a network and mask 0.0.0.0/0, i.e. to allow e-mails with that domain from everywhere. On the other hand, mail receivers will be free to refuse mails from domains without RMX records or RMX records which are too loose. Advanced MTAs might have a configuration option to set the maximum number of IP addresses authorized to use a domain. E-mails from a domain, which's RMX records exceed this limit, would be rejected. For example, a relay could reject e-mails from domains which authorize more than 8 IP addresses. That allows to accept e-mails only from domains with a reasonable security policy.
      --

      The only thing necessary for the triumph of evil is for good men to do nothing. - Edmund Burke
    9. Re:RMX sounds kewl, but... by Anonymous Coward · · Score: 0

      Obviously I had too much to drink last night.

      The point I drowned in red wine is unchanged. A resourceful spammer could set his single RMX-pointer to the specific MsExchange Open Relay Server ((c)Microsoft.1997-2000) he's abusing at that moment. Given sufficent short expiries that would work. I see no provisions in the draft to prevent such behaviour.

      Yes, it still increases minimum cluelevel and effort required, and thus is still A Good Thing.

    10. Re:RMX sounds kewl, but... by Shalda · · Score: 1

      Meanwhile, Network Solutions and other registrars are thrilled as spammers start to bulk register domains. Thus raising the cost of spam by about $15/day.

  13. ugh... by di0s · · Score: 0, Troll

    ...reputation systems (karma?)
    Oh god, Karma-whoring email... what'll they think of next?

    1. Re:ugh... by Anonymous Coward · · Score: 0

      Oh god, Karma-whoring email... what'll they think of next?

      Ugh is right. Next thing you know we'll be seeing F1rst P0st in our in-boxes.

  14. RMX is designed to take care of that by phr2 · · Score: 4, Informative

    The RMX record can return any IP addresses that it wants, the receiving machine just does a DNS lookup on the originating address and makes sure that IP is authorized to send mail. Read the RFC for more details.

    1. Re:RMX is designed to take care of that by dzym · · Score: 3, Funny
      So the onus is upon the individual domain owners who would not wish people to spoof using their domains?

      Sounds like adoption rates will be high and this plan will take off like a rocket.

    2. Re:RMX is designed to take care of that by twitter · · Score: 3, Insightful
      makes sure that IP is authorized to send mail

      Who "authorizes" my machine to send mail? DHCP on cable modems is evil enough. What new hoops are people thinking of to enforce the "client" nature of all but comerical machines?

      --

      Friends don't help friends install M$ junk.

    3. Re:RMX is designed to take care of that by phr2 · · Score: 1

      I guess if the sending domain doesn't return an RMX record, the receiving domain should treat the mail as authorized. The most commonly forged addresses are from AOL, Yahoo, Hotmail, etc. So if those big domains supply RMX, that should get rid of a lot of those forgeries. Of course it just means the forgers will switch to smaller domains that don't serve RMX...

    4. Re:RMX is designed to take care of that by rthille · · Score: 1

      The only problem that I see with this is that ISPs aren't always willing to delegate lookups of in-addr.arpa subdomains for a single DSL ip address. I run about 5 domains from my single DSL ip address, and my dns server will serve up both forward and reverse lookups for my domains, but since my ISP isn't delegating the lookup of my ip address, no one will ever ask my server what hostnames go with 64.136.146.65 (65.146.136.64.in-addr.arpa).
      Since I'm moving soon it hasn't been worth it to find an ISP that would delegate.

      --
      Awesome furniture, accessories and cabinetry in Santa Rosa, CA: http://humanity-home.com/
    5. Re:RMX is designed to take care of that by rthille · · Score: 2, Informative

      Never mind. I just read the original article, and realized that the receiving MTA would query the domain, not the IP owner for whether it (the IP address) was authorized to send mail on it's behalf.

      --
      Awesome furniture, accessories and cabinetry in Santa Rosa, CA: http://humanity-home.com/
    6. Re:RMX is designed to take care of that by Skapare · · Score: 1

      After you move, get your next DSL through Speakeasy. They will delegate RDNS to static IPs if you ask.

      --
      now we need to go OSS in diesel cars
    7. Re:RMX is designed to take care of that by rthille · · Score: 1

      Actually, I think I'm going to go with Sonic.net. Based on what I've been reading they have a great community going via usenet and local groups where I'm moving to (Sebastopol, CA), and have a bunch of rabidly happy/positive customers.

      --
      Awesome furniture, accessories and cabinetry in Santa Rosa, CA: http://humanity-home.com/
    8. Re:RMX is designed to take care of that by JKConsult · · Score: 1
      Sarcasm aside, it does solve the "I wanna bitch" problem, though. You don't use RMX? Then you don't get to bitch about people spoofing your domain on Slashdot. And if you do, rest assured, the /.'ers will gently remind* you of RMX.

      *=scream at you about it, post links to the RFC, and mod you into oblivion.

  15. Go abroad, lose e-mail address by McDutchie · · Score: 1, Interesting
    One of the tools, Reverse MX, is expected to be in place in several months. It would allow the receiving mail server to query a domain to determine if the sending server is allowed to send on its behalf.

    According to the linked draft, this is supposed to be a "protection against e-mail fraud, especially spam". No mention is made of legitimate uses that are also killed.

    When I travel abroad, I send e-mail with my own home e-mail address as the sender through the foreign ISP's SMTP server (and collect mail with POP3 from my home ISP as usual). This has several advantages such as not needing another e-mail account and still being able to post to mailing lists. This plan will lump that in with "fraud" and make it impossible. With whitelisting on private e-mail becoming more and more common, this will be even more of an issue.

    If the spammers do not make e-mail as we know it unusable, trust clueless antispammers to do that job more thoroughly.

    (Another sign of their cluelessness in that draft is their statement that "spam is not yet exactly defined". The definition is, and always has been, unsolicited bulk e-mail. You can't get more exact than that.)

    1. Re:Go abroad, lose e-mail address by Have+Blue · · Score: 2, Informative

      Isn't this what the reply-to field is for?

      You could also run your own SMTP server, unless you're on a modem at home or something.

    2. Re:Go abroad, lose e-mail address by McDutchie · · Score: 2, Insightful
      Isn't this what the reply-to field is for?

      No. The reply-to field is for directing replies to an address different from your own, not for indicating who sent the e-mail. Mailing list servers and private whitelists generally check against the From field.

      You could also run your own SMTP server, unless you're on a modem at home or something.

      Sure, I could - but Joe Average wouldn't know how to, nor should he have to.

    3. Re:Go abroad, lose e-mail address by parkanoid · · Score: 2, Informative

      A valid point, however sshing to your box back in your country of origin and sending email from there is usually a valid option; that's what I do when I travel.

    4. Re:Go abroad, lose e-mail address by Daniel+Quinlan · · Score: 3, Interesting
      When I travel abroad, I send e-mail with my own home e-mail address as the sender through the foreign ISP's SMTP server (and collect mail with POP3 from my home ISP as usual). This has several advantages such as not needing another e-mail account and still being able to post to mailing lists. This plan will lump that in with "fraud" and make it impossible. With whitelisting on private e-mail becoming more and more common, this will be even more of an issue.

      This is a really weak argument to continue to allow anyone to impersonate me (well, to pretend to be allowed to send mail for my domain). There are two simple reasons why:

      • Your ISP does not have to implement restrictive RMX, they can allow any IP address to send mail on their behalf. If you don't like your ISP, switch to a more permissive one.
      • You can use authenticated SMTP or POP3 before SMTP to send mail from your ISP mail server. Authentication exists for a reason!

      Basically, if you aren't happy with RMX, just find a different ISP (probably one that is spammer friendly, go figure) or set up your own domain. I like this solution because the market can decide whether or not it will be useful and user choice (in spam filters) can be preserved.

      I hope we'll be able to add this useful tool to SpamAssassin soon.

      (I agree with you entirely about "spam" already having a perfectly good definition: UBE. I suspect their weasel-words are due to the influence of the DMA and their allies who claim that spam is only a problem because of fraud and scams. No, spam is a problem because I'm being flooded by UBE. I don't care if it's fraudulent or not.)

    5. Re:Go abroad, lose e-mail address by oolon · · Score: 2, Insightful

      You can setup an SSL-Authenicating posting SMTP server that allows relaying from you. It being authenicating means it only works from your laptop. Its also a good thing TM, cos it will queue any messages for you, so you can disconnect from the network and it will worry about delayed messages.

      James

    6. Re:Go abroad, lose e-mail address by Daniel+Phillips · · Score: 1

      When I travel abroad, I send e-mail with my own home e-mail address as the sender through the foreign ISP's SMTP server (and collect mail with POP3 from my home ISP as usual). This has several advantages such as not needing another e-mail account and still being able to post to mailing lists. This plan will lump that in with "fraud" and make it impossible. With whitelisting on private e-mail becoming more and more common, this will be even more of an issue.

      On the contrary, this might even make things work better, if it's handled properly. Assuming you run your own SMTP server on your laptop (as I do - it's easy with Linux), it will vouch that your emails are authorized to be sent from your domain. Oh, and you would have to own your own domain, which costs about $20/year. Then it comes down to whether your domain is "responsible" or not. That is, anybody who wants to send spam and take responsibility for the legal consequences should be able to.

      But it's not clear to me how one would distinguish a responsible domain from an irresponsible one.

      --
      Have you got your LWN subscription yet?
    7. Re:Go abroad, lose e-mail address by Eric+Smith · · Score: 1
      but Joe Average wouldn't know how to [run his own SMTP server]
      Joe Average doesn't NEED to run an SMTP server. He just points his MUA at his ISP's SMTP server. Most ISPs now are set up to accept SMTP mail from their customers from any IP address (not just the customer's "home" IP address) provided that the connection is authenticated in one of several ways, commonly including logging in via POP or IMAP.

      If your ISP does NOT allow you to send mail through their SMTP server from arbitrary IP address (subject to authentication), it's time to find a new ISP.

    8. Re:Go abroad, lose e-mail address by Above · · Score: 2, Informative

      Your "home ISP", or more in particular, your "e-mail ISP" should provide you secure reception and sending of e-mail. That is, they should allow POP or IMAP over SSL to download mail, and use SMTP AUTH over SSL (either STARTTLS or smtps). That way you are always sending and receiving via your "e-mail isp".

      The reason most people use "local" mail servers when they dial in is because lots of dial ins block outgoing to port 25 to stop spam. A band-aid on top of a band-aid. Use a secure, authenticated channel for your e-mail and you both add security to your own e-mail, and help stop spam.

    9. Re:Go abroad, lose e-mail address by Anonymous Coward · · Score: 0

      (Another sign of their cluelessness in that draft is their statement that "spam is not yet exactly defined". The definition is, and always has been, unsolicited bulk e-mail. You can't get more exact than that.)

      Actually, you have to. When have you solicited the e-mail? Is doing business with a company enough? A lot of people think so. Others insist that they should be required to get an opt-in first and allow you to opt-out at any time. I personally prefer that.

      Then, what is bulk? Does it become bulk at 10 messages, 100 or 1000? Is it bulk when even one of those messages was not an opt-in? This one is tougher. If this is ever legislated, I want a law that states that spammers are allowed to send unsolicited e-mail if each message is hand-typed individually along with each address.

    10. Re:Go abroad, lose e-mail address by mcrbids · · Score: 2, Informative

      No mention is made of legitimate uses that are also killed.

      But that isn't a problem, either!

      1) You can use an IMAP mail server. (which gives you lots of features, anyway)

      2) You can use authenticated SMTP.

      3) then, there's SMTP after POP.

      4) You can use webmail thru your ISP (or on your mailserver)

      5) You can have a "from" address and a "reply-to" address - they don't have to be different!

      I mean, it's an inconvenience like open relays are an inconvenience!

      --
      I have no problem with your religion until you decide it's reason to deprive others of the truth.
    11. Re:Go abroad, lose e-mail address by putaro · · Score: 1

      I do run my own SMTP server on leased machine. However, my home DSL provider BLOCKS outgoing port 25 to prevent spam so I have to route e-mail through their SMTP server. Reverse MX will break my e-mail, unless I start running my own DNS service too.

    12. Re:Go abroad, lose e-mail address by Demerara · · Score: 1

      When I travel abroad, I send e-mail with my own home e-mail address as the sender through the foreign ISP's SMTP server (and collect mail with POP3 from my home ISP as usual).

      I have set my SMTP server to the SMTP mail server on the site which hosts my domain. It requires authentication (okay, simple username/password combination but better than a poke in the eye with a sharp stick) and can sometimes be a little sluggish. But I have total global roaming with my email client and I don't have to fiddle with those pesky SMTP settings every time.

      RMX is just another brick in the wall being assembled globally to stop the sheer deluge of Spam. God Bless 'em every one.

      --
      Backward%20compatibility%20is%20over-rated
    13. Re:Go abroad, lose e-mail address by McDutchie · · Score: 1
      This is a really weak argument to continue to allow anyone to impersonate me (well, to pretend to be allowed to send mail for my domain).

      Nowhere did I advocate allowing that. I just criticized this particular way of combatting the spam problem. Spam (including spam from impersonators) can already be very effectively blocked using a combination of a good spam sources block list with a list of open proxies and relays. The tools exist that deal with the problem without breaking e-mail as we know it. RMX would only force spammers to send mail from a domain belonging to the originating network and would thus only serve to legitimize spam.

      Don't for a moment think that RMX would stop or even slow spammers - for example, they are already paying students to do their spamming for them from their college computers, and when they get shut down they just find another one. So with RMX we could expect spam from perfectly verified .edu domains.

      Also, the next big thing will be e-mail worms that hijack home computers to spam for the spammers. Those can easily be written to set the spam's sender to an address in the domain of whatever network they have infected.

    14. Re:Go abroad, lose e-mail address by Daniel+Quinlan · · Score: 1
      I just criticized this particular way of combatting the spam problem. Spam (including spam from impersonators) can already be very effectively blocked using a combination of a good spam sources block list with a list of open proxies and relays. The tools exist that deal with the problem without breaking e-mail as we know it. RMX would only force spammers to send mail from a domain belonging to the originating network and would thus only serve to legitimize spam.

      I've been testing RBLs for SpamAssassin for the last several months. They tend to have a far worse false positive problem than your unique travel problem, so we have to be very careful about how they get used (weighted scores and so on). The SpamHaus Block List, which you mention, has a FP rate of 0.5%. Open proxy block lists have a much lower false positive rate (some have an FP rate of virtually zero, like OPM), but they don't account for all spam.

      You also seem to have ignored my argument that authentication solves your problem. If it doesn't prevent legitimate senders from sending email (like some cash-based methods would), I think it's worth a shot at the very least.

      As for the argument that RMX won't stop spammers, I think it can only help. Why do you think spammers forge domains right now? It makes it easier for their message to get out if they can impersonate good domains. Make that impossible and it makes it harder for them to get their message out, so they make less money on spam. And if you combine RMX with public listings of "good domains" -- places that have a historic record of not being spam friendly (this also largely handles your .edu domain issue), then it makes it much easier to filter email. RMX is not the entire solution, it's part of the solution. RMX also allows reliable whitelisting and blacklisting (which is hard to do accurately right now).

      Also, if spammers have to resort to hijacking computers to send their UBE, it should make it somewhat easier to punish them severely.

      I just can't see any reason why being able to verify that a mail server was allowed to send mail on the behalf of a domain is a bad thing. In addition to everything else I've said, it makes fraud more difficult, whitelists stronger, RBLs more effective (especially domain-based ones like dsn.rfc-ignorant.org), and will help Bayesian systems as well (since From: domain will become a more meaningful token). There is a huge number of improvements this will allow in spam filters. This is long past due.

    15. Re:Go abroad, lose e-mail address by ptbarnett · · Score: 1
      Isn't this what the reply-to field is for?

      Some mailers don't honor "reply-to". I've run into problems with a gateway to a legacy mail system that stripped it off altogether.

      I also found that many people save the From: address in their address book, completely obvlivious to reply-to.

    16. Re:Go abroad, lose e-mail address by IIH · · Score: 1
      Isn't this what the reply-to field is for?

      No. The reply-to field is for directing replies to an address different from your own, not for indicating who sent the e-mail. Mailing list servers and private whitelists generally check against the From field

      Hence why they have three fields:
      Sender: Who posted the email - the foreign isp
      From: Who sent the email, your home isp address
      Reply to: who you want to reply to.

      I regard the Sender/envelope address as a electronic postmark - if you post a letter abroad, you can put your own return address on it, but it will always have a foreign postmark.

      --
      Exigo spamos et dona ferentes
    17. Re:Go abroad, lose e-mail address by RedHat+Rocky · · Score: 1

      (I agree with you entirely about "spam" already having a perfectly good definition: UBE. I suspect their weasel-words are due to the influence of the DMA and their allies who claim that spam is only a problem because of fraud and scams. No, spam is a problem because I'm being flooded by UBE. I don't care if it's fraudulent or not.)

      I disagree, sidestepping the spam label makes perfect sense. Getting everyone to agree that such and such is spam would be next to impossible for ALL cases. As I've been saying for a while, the real problem is fraudulent headers; once that issue has been addressed the power goes back to the recipient to decide what email they want to accept, be it an ISP, end user or whatever.

      This proposal works and in all the right ways. The sooner implemented the better.

      --
      Anything is possible given time and money.
    18. Re:Go abroad, lose e-mail address by Tackhead · · Score: 1
      > I do run my own SMTP server on leased machine. However, my home DSL provider BLOCKS outgoing port 25 to prevent spam so I have to route e-mail through their SMTP server.

      *GOOD*.

      Yes, it sucks for you, because you're one of the 0.01% of home users who run their own SMTP servers.

      But guess what? If you can get your ISP to remove the block for you, I might actually see your email. Because I'm not gonna be getting 50 spams a day from the other 99.99% of your ISP's customers with open proxies who are running SMTP servers without knowing it. (read: 12.0.0.0/8, 24.0.0.0/8, 4.0.0.0/8, and 200.0.0.0/7.)

      As it stands, if you're in those netblocks, I don't care if you're running your own MTA or not. Because of your providers gross negligence in dealing with the open proxy problem, you can talk to the 550, because my Sendmail ain't listening.

  16. The Solution to Spam Is Obvious by Ignorant+Aardvark · · Score: 4, Funny

    We already know who some of the spammers are. Heck, some of them have admitted it! What we need is good old-fashioned mob justice. If we all have a hand in the lynching, how are the coppers supposed to know who exactly did the killing? I suggest that we rename Saturday Spamurday. Every Spamurday we all mob the home of a spammer and lynch them in a very public manner. Soon, the spam should start dropping off, because who would dare risk their lives to mob justice to make a few bucks selling penis enlargers?

    1. Re:The Solution to Spam Is Obvious by zcat_NZ · · Score: 2, Informative

      We already know who some of the spammers are. Heck, some of them have admitted it!

      I keep submitting this link as a slashdot story. It keeps getting rejected. FFS guys, stop hassling one spammer at a time when they happen to make the news. Let's put pressure on the whole bunch. Start now, and keep it up until they stop spamming.

      --
      455fe10422ca29c4933f95052b792ab2
    2. Re:The Solution to Spam Is Obvious by seb+bean · · Score: 1

      Of course, after a few months all the would-be-spammers will be too scared and decide to get real jobs. This is obviously the only way to really get rid of spam.

    3. Re:The Solution to Spam Is Obvious by Shafe · · Score: 1

      I agree---this was my plan all along. Stop them at the source! Burn their houses. We need vigilantes. You stop a dozen big spammers, and the amount of spam drops significantly. Don't forget that spammers can send millions of spams per day.

  17. spam sucks... by seb+bean · · Score: 1
    Anything that can stop or slow down spam before getting to the client has my vote. Right now about 80-90% of my mail is spam. I read my mail with 3-4 different computers and email clients(including internet/html) and most of them dont have spam filters of any kind(the only one is mail on osx) so i end up getting most of my spam and having to sort through it.

    So getting the spam stopped before the client even gets it is basicly the only way to rid myself of it.

  18. What? by Anonymous Coward · · Score: 0

    An anti-spam research group is going to send out spam? Oh, the hypocrisy is unbelievable! I would never support an anti-spam group which sent me unsolicited mail.

  19. Paul Vixie proposed something like this by dvanduzer · · Score: 5, Informative

    The original discussion on Nanog can be found here or perhaps here. He originally had the proposal on his site (dead link) but he seems to have taken the page down, and I don't see any reference to him contributing to this draft.

  20. Paying to send e-mail is not the solution by dsplat · · Score: 4, Insightful

    Right now, part of the problem is that ISPs and users are bearing the cost of spam. In the end, any of the costs to the ISPs are passed on to their customers. Making us pay to send, is going to cut down on the usefulness of e-mail to legitimate users. If I have to pay by the message, I'm going to think twice about a quick note to a friend asking if he wants to meet for lunch. I'll pass along fewer cool URLs.

    On the flip side, spammers will still send from addresses that can't be collected from. Many spammers are willing to harass people, steal the bandwidth they've paid for, and lie to people about everything from the return address on the e-mail to the fact that the opt-out procedure is actually just a verification that they have a live address. We won't even go into their claims about the efficacy of the products they sell. Is it even a stretch to believe that they will continue to lie to ISPs and defraud them of payments for the e-mail they send?

    Micropayments for e-mail would kill it.

    --
    The net will not be what we demand, but what we make it. Build it well.
    1. Re:Paying to send e-mail is not the solution by alienw · · Score: 1

      The only reason micropayments are being pushed is because there is a lot of money to be made in that. However, from a purely logical perspective, that is the most idiotic solution possible. The real reason is that some company wants to become the email micropayment monopoly. Imagine taking a small cut from every email sent -- that would add up to a fortune.

    2. Re:Paying to send e-mail is not the solution by drinkypoo · · Score: 1
      Right now, part of the problem is that ISPs and users are bearing the cost of spam. In the end, any of the costs to the ISPs are passed on to their customers. Making us pay to send, is going to cut down on the usefulness of e-mail to legitimate users. If I have to pay by the message, I'm going to think twice about a quick note to a friend asking if he wants to meet for lunch. I'll pass along fewer cool URLs.

      This functionality is now provided by instant messengers. Sure, some people don't use them, but they are awfully convenient. You can jot someone a quick message, and have it delivered when they connect, and then if you're connected you can chat in realtime! Much more useful. Not that you didn't know this.

      Further improving the usefulness of IM is the fact that mobile devices are getting IM integration. ICQ will send SMS. My girlfriend's cellphone has AIM. So why use email for these sorts of things? Especially when there exist multi-protocol IM clients like Trillian and Gaim, the latter of which is now available for multiple platforms.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    3. Re:Paying to send e-mail is not the solution by dsplat · · Score: 1

      This functionality is now provided by instant messengers.

      Actually, I thought about that point when I wrote my original comment. You are completely right. And it validates my point. Charging for e-mail will drive people to alternative protocols. There are already numerous ways to communicate with people online. If e-mail costs per message, we'll grab onto something else in a big hurry.

      Frankly, I could see a merging of e-mail, P2P and IM creating something with some of the capabilities of each. A distributed file sharing service to find addresses, and a P2P IM system to provide e-mail without a server to friends who are currently online. That's just a back-of-the-envelope brainstorm. Build whatever protocol you like on top of TCP, UDP or even raw IP.

      <!-- You could even bury messages in comments posted on major web sites and build clients to send and retrieve them. -->

      --
      The net will not be what we demand, but what we make it. Build it well.
    4. Re:Paying to send e-mail is not the solution by Rebar · · Score: 1
      How about this:

      Only accept emails from people who include in the subject line (or an X-Verification in the header or something) a link to an OPTION to charge the SENDER for the email, for something like $0.10. You can bet that those people who choose to collect, I will not continue sending emails unless it is really important. People who send me mails that are my friends will not be charged (because it is an option to charge by the recipient), but you can bet I'd be clicking the charge button for every mortgage or member enlargement offer that I receive. I may even ding that coworker who thinks I enjoy receiving email updates of everything he finds interesting on the 'net.

      Of course, the devil is in the details; securely implementing this concept is left as an exercise for the reader.

    5. Re:Paying to send e-mail is not the solution by mlk · · Score: 1

      please tell me i've read this wrong.
      Stop spam is easy, we'll just use a tech. which will kill email (a nice, esablished and easy[1] standard), and drive people property protocals[2] which will then be spammed instead?

      Great... :(

      [1] To implement
      [2] Note, multiple. A MSN based phone/PDA/MS user know knowing the diffrence can not talk to an ICQ user.

      --
      Wow, I should not post when knackered.
    6. Re:Paying to send e-mail is not the solution by FunkyMarcus · · Score: 1

      Right now, part of the problem is that ISPs and users are bearing the cost of spam. In the end, any of the costs to the ISPs are passed on to their customers. Making us pay to send, is going to cut down on the usefulness of e-mail to legitimate users. If I have to pay by the message, I'm going to think twice about a quick note to a friend asking if he wants to meet for lunch. I'll pass along fewer cool URLs.

      You're taking sender-pays much too literally.

      A proper sender-pays system does not imply micropayments or line-item e-mail fees from your provider. The costs of sender-pays systems can be covered in the same ways as the receiver-pays services you use now. Micropayments could, and in some cases do, cover the cost of service under the current architecture too, but most operators offer e-mail as a package, a bundled service, or display advertisements to cover their costs. The only difference with a sender-pays system is that the bulk of the underlying costs cover the expenses involved in sending messages rather than receiving them.

      Mark

  21. Business model by eclectic_echidna · · Score: 0, Redundant

    1. Change the SMTP standards.
    2. Wait for business owners to squirm as they consider upgrading their M$Exchange boxen.
    3. Convince them to install Chandler 1.0 instead.
    4. ...
    5. Profit?!

    --
    Antiquated competence won't be a job skill forever.
  22. Hidden Features by Voivod · · Score: 5, Insightful

    Mail agents like Mozilla will have to become more sophisticated about what mail relays they use when sending mail. Suddenly it's not okay to send both your personal e-mail and your work-from-home e-mail through your DSL ISP's mail server since your work domain DNS will claim no relationship with your DSL ISP's server.

    Could Mozilla use RMX to determine on the fly what relay to use? It sees that you're sending from a @slashdot.org address, so it does an RMX lookup on slashdot.org and discovers the IP of all the relays for that address. Ah, a nice clean new standard... the desire to abuse it is overwhelming. :-)

    An ironic side effect is that mail administrators are going to have to open up more holes in their relays. Your users can't just bounce mail off their random ISPs anymore. They have to use the real corporate mailserver now, which means you can't just lock things down by IP address such that only internal corporate users can use the relay.

    1. Re:Hidden Features by edwdig · · Score: 1

      Mozilla Mail already has an option for each individual mail account to use a different SMTP server.

      Under Mail & Newsgroup Account Settings -> Outgoing Server, you can provide a list of SMTP servers and mark one as the default.

      Under Mail & Newsgroup Account Settings -> Click on the account in question -> Advanced, you can pick what server to use out of the list mentioned above, including a use default choice.

    2. Re:Hidden Features by Phroggy · · Score: 1

      Could Mozilla use RMX to determine on the fly what relay to use?

      No, for two reasons: first, the RMX record points to the source IPs of outgoing mail, which may not also be accepting mail on port 25. Second, the mail server has to be configured to allow you to relay, hopefully with authentication. Most mail servers are set to only allow relaying from a range of IPs; your work's SMTP server won't allow relaying from your DSL ISP at home.

      I don't have SMTP authentication set up on my server at home, because I don't know how. Sendmail isn't exactly simple.

      --
      $x='S24;r)>63/* h@<5+oZ)32"5cz';$me='phroggy'x$];
      $x=~y+ -xz+\0-Tx+;print$_^chop$me for split'',$x;
    3. Re:Hidden Features by rthille · · Score: 1

      I've got SMTP-AUTH running on my qmail setup at home. Wasn't too easy, and needed a patch, but works like a charm. Even for work email that I send from my home machines, I send it via my home SMTP server, since it tends to be more reliable than my ability to get to the SMTP servers at work (not sure if it's the connectivity or the actual MTA at work). I just hand it off to qmail, and let it worry about retrying delivery as needed.

      --
      Awesome furniture, accessories and cabinetry in Santa Rosa, CA: http://humanity-home.com/
    4. Re:Hidden Features by spydir31 · · Score: 2, Informative

      There's no need to open holes in your relays,
      use authentication, either SMTP-AUTH or POP-before-SMTP(nicely transparent to most mail clients).
      anyway, is there a real reason not to use the corporate servers?

    5. Re:Hidden Features by Phroggy · · Score: 1

      Yep, everyone I ask about smtp-auth in Sendmail tells me to switch to qmail. I suppose one of these days I'll eventually have to.

      --
      $x='S24;r)>63/* h@<5+oZ)32"5cz';$me='phroggy'x$];
      $x=~y+ -xz+\0-Tx+;print$_^chop$me for split'',$x;
    6. Re:Hidden Features by IncohereD · · Score: 1

      Isn't the problem here blocking forged headers, not reply addresses? It won't matter what 'account' you're sending from in mozilla, that only affects the reply address. What matters is that the SMTP server you use to send it puts it's real info in the header. This should be transparent to you.

    7. Re:Hidden Features by KkiniDst · · Score: 1

      This is the entire point. Mail administrators need to start making their users accountable for that they send. Features like SMTP AUTH and SSL/TLS will start getting the widespread use they should have a long time ago.

      If you are sending mail for your job, why not use your employer's mail server? The entire idea behind RMX is to eliminate forgeries, not eliminate spam. Google on the term "joe job" or have a look at this to see what RMX is really for.

      --
      Brian T Glenn
      delink.net Internet Services
  23. Pay a deposit to send a spam. by rice_burners_suck · · Score: 4, Interesting
    Here is what I think. Forget all the complicated stuff. At the ISP, give every email account a whitelist, containing email addresses to be let through. Each email that is sent is checked against the whitelist. If the sender is not included on the whitelist, the email is automatically rejected. Users can optionally set up their account to accept any emails.

    But here's the fun part: As a recipient, each user sets up their account with a "deposit price" for bypassing the whitelist. You can set that price to any amount in your currency of choice. As a sender, you can set the maximum amount that you're willing to pay, so that you don't suddenly get billed/debited/charged some outrageous fee. If someone who is not on your whitelist needs to send you an email, they pay a deposit. When you receive the email, you either accept it or reject it. If you accept it, you do not get paid; the sender keeps the deposit. If you reject it (meaning you've read the email and decided it was spam), the deposit paid by the sender is paid to you. It's enough to set the deposit to something like 50 cents. You'll probably get highly targeted emails at this price. I wouldn't mind risking 50 cents to send someone an email that I think they'll accept. You could set it to a few dollars to reduce the noise even further. But you could set it to any price you want. If you REALLY don't want email from sources not included in your whitelist, you could set the deposit to thousands of dollars. With this system, you'll be HAPPY to receive spam! And spammers either won't be able to afford it, or recipients will start making some money.

    1. Re:Pay a deposit to send a spam. by drinkypoo · · Score: 1

      This ain't a new idea but it's still a good one. Has anyone written a formal proposal for a system like this one?

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
  24. RMX does nothing to solve what it breaks by Kjella · · Score: 2, Interesting

    Any server that has a RMX record, should also have a compulsory, authenticated way of sending email from an unauthorized address. For instance, I'm now at home, and I would like to send mail with my University address. I can not do that, because the University blocks relaying from external IPs. So I send mail with my ISP account, but with the headers of my University account. If my University implemented a RMX record, I could no longer to that. And unless I can authenticate with the University servers to send mail through them, I can't send mail with my own mail address on it! If I can authenticate and send with my Uni account then it is fine, if not this will cause a big stink and RBX being dropped. Really.

    Kjella

    --
    Live today, because you never know what tomorrow brings
    1. Re:RMX does nothing to solve what it breaks by Anonymous Coward · · Score: 0

      The rfc clearly states the RBX is on the smtp MAIL FROM command, not the From: or the Reply-To: headers which are part of the email data.

      There is nothing to stop you from specifying the uni account in the headers

    2. Re:RMX does nothing to solve what it breaks by remmy1978 · · Score: 3, Informative

      > So I send mail with my ISP account, but with the headers of my University account. If my University implemented a RMX record, I could no longer to that.

      Untrue. This is not how RMX would work. If you send mail from home using your Uni email address, you change the "From: Kjella@uni.edu". However, the envelope sender (normally not displayed in email programs but an integral part of each email) would not be changed, no matter what email address you put as your from.

      So the question becomes not if your Uni supports RMX, but if your ISP does. If it does, you only need to ensure the envelope sender is valid, and you'll be able to use any "From:" that you'd like.

    3. Re:RMX does nothing to solve what it breaks by IIH · · Score: 1
      For instance, I'm now at home, and I would like to send mail with my University address. I can not do that, because the University blocks relaying from external IPs. So I send mail with my ISP account, but with the headers of my University account. If my University implemented a RMX record, I could no longer to that. And unless I can authenticate with the University servers to send mail through them, I can't send mail with my own mail address on it!

      I believe you'll find that's what Sender/From/Reply to address are there for. The envelope address is supposed to be an electronic equivalent of a postmark - on a real letter you can write any return address you like, but don't expect your home post office to stamp it with the university post office mark.

      --
      Exigo spamos et dona ferentes
    4. Re:RMX does nothing to solve what it breaks by Anonymous Coward · · Score: 0

      You're right. Before posting RMX records, your university will need to provide smtp-auth (many already do), vpn, webmail, or one of the myriad other options for remote mail sending, or the students will not be able to send "real" email from off-campus. I seriously doubt many organizations would post RMX before doing this, since otherwise they'd face a huge backlash from their users. I'm not sure I understand why--or by whom--remote access should be made compulsory though.

  25. Yes, these people seem to suck. by twitter · · Score: 2, Interesting
    Another sign of their cluelessness in that draft is their statement that "spam is not yet exactly defined". The definition is, and always has been, unsolicited bulk e-mail. You can't get more exact than that

    I prefer the term, "unsolicited comercial email", but I see where you are comming from. UCE is the most obvious and obnoxious form. Bulk mailing by organizations you belong to may not be solicited but have legitimate uses. Either way, everyone knows what spam is when they see it, but there's little hope of building a useful filter based on "consent". The simple answer, to copy fax laws against unsolicited comercial faxes, is the best way to kill spam.

    These IRTF people have other problems too. They've been hard at work with DRM and seem to give their End to End group the cold shoulder. Also their E2E projects included multicasting and other push like stuff. Everywhere I look, I see things I don't like, adding inteligence to a network that works because it has none. Who's putting these people up to this stuff?

    --

    Friends don't help friends install M$ junk.

  26. Attach a brick, or a picture of one by Anonymous Coward · · Score: 0

    Before the USPS changed the rules (decades ago kids), you could attach things before you returned it. With e-mail, there are no such restrictions other than maximum sizes of messages that ISPs will accept. When spammers provide a legitimate unsubscribe address, attach things to the reply. Capture your favorite anti-spam web site as a series of pictures and attach them. I suggest using a different format for each one.

    1. Re:Attach a brick, or a picture of one by AndroidCat · · Score: 1
      When spammers provide a legitimate unsubscribe address

      Yes, when. (Besides, it's usually a web link.)

      --
      One line blog. I hear that they're called Twitters now.
  27. Monster.com and intermediaries by dmeranda · · Score: 4, Informative

    The RMX approach is certainly very interesting. Although not based on DNS I had previously asked an AOL postmaster for similar information about what servers could legitimately send mail from any aol.com domains. That simple step has allowed me to block almost 100% of all spam reporting to come from joerandomuser@aol.com. I've been looking for similar information from the other big ISPs that spammers love to forge but with little luck.

    Of course there may be a few things that this breaks (not that they shouldn't be fixed to work a different way). One is email intermediaries. SMTP was originally designed to be store and forward, and it used to be quite common that mail took many sometimes unpredictable hops along its way...direct end-to-end connections were not nearly as unbiqutious as they are now. But there still are cases where an SMTP intermediate hop may exist for legitimate reasons, but which may be unknown to the sender; thus they would not be listed in the RMX access list.

    Another "questionable" practice that would be affected are services like monster.com, which send mail (usually resumes) to subscribers (companies hunting employees), but forge the sender address as being the real address of the individual, not of monster.com itself. Thus monster.com forges mail from almost any domain all the time; even though that mail can hardly be described as "spam" since the individual being forged has authorized monster to do it, and the recipient is paying monster to recieve them... But that kind of practice would still be affected without some workaround.

    Oh, and if you want end-to-end authentication why don't more SMTP servers use the STARTTLS (aka SSL) mechanism with REAL certificates just like web servers do? If this became standard practice then it would be much easier to do SMTP server authentication with existing technology, and in a way that is completely transparent to the users (MTAs).
    1. Re:Monster.com and intermediaries by oolon · · Score: 1

      This is why the RMX should actually be a public key, authorised servers to post for that domain have a copy of thatr public key, infact, there is no reason why every server could not have a different one which could be published in the DNS. If a private key is stolen you just revoke it and generate a new one. Relays could relay but would not be able to change the content. The problem with a key system is its far more difficult to get everyone to agree to what they key format and encryption should be, there is no debate with the IP system.

      James

    2. Re:Monster.com and intermediaries by Electrum · · Score: 2, Informative

      Another "questionable" practice that would be affected are services like monster.com, which send mail (usually resumes) to subscribers (companies hunting employees), but forge the sender address as being the real address of the individual, not of monster.com itself.

      The simple solution here is for monster.com to do the right thing and only "forge" the From line in the header, not the envelope sender address. The envelope sender should use VERP, which would allow monster to know when a specific email bounces.

    3. Re:Monster.com and intermediaries by oh · · Score: 1
      Of course there may be a few things that this breaks (not that they shouldn't be fixed to work a different way). One is email intermediaries. SMTP was originally designed to be store and forward, and it used to be quite common that mail took many sometimes unpredictable hops along its way

      Trying to remember the MX specifications.

      I own domain example.com (for example), and I want to send an email to joe.smith@slashdot.org. I might have several SMTP servers, but each would be listed in the RMX of example.com, I might configure my server to relay via my up-stream provider, but if I do that I should include their servers in my RMX record.

      The relay host will deliver to one of the hosts listed in the MX record for slashdor.org, maybe not their server, but a server that the administrator of slashdot.org has decided they can trust their mail to. If they can point their MX record at a server, they can damn well exclude it from RMX checking. Even easier, a MTA that does RMX should also check for MX records on the destinatin domain.

      There should be no other hosts. The days of open relays are long gone, they do exist unfortunatly, but they are rare enough that relying on them to deliver non-spam is crazy.

      On the whole, I like the idea.
      --
      Democracy isn't about no one telling you what to do. It's about everyone telling you what to do.
  28. I wonder if it's to little to late... by delmoi · · Score: 1

    Really, this stuff should have been done years ago.

    I doubt it will help all that much though, for one thing spammers could forge headers for any of the huge number of domains with lazy admins that do not use reverse MX. The vast majority of admins can't be bothered to close their relays, so I doubt this will help to much.

    Even when the vast majority of sites out there implement it, a spammer can simply buy a domain name, and setup a DNS server with entries for all of the open relays they find, or used a hacked DNS server that simply says any IP address is a valid sender.

    So this won't stop spam, but it will probably prevent people from using email address of people who don't have anything to do with the spam, however, which is a good thing. And we'll be able to track down spammers via their DNS servers.

    --

    ReadThe ReflectionEngine, a cyberpunk style n
  29. A solution to this by Julian+Morrison · · Score: 1

    would be to mod the reverse mx proposal so it normally reads the "From:" and does RMX on that, but if this fails it can also check another header, "X-Really-From:"

    That way the sender is always identified - legitimate forging is possible, but concealment is not.

  30. pure bullshit. by twitter · · Score: 1
    As a result, spam will cease to exist.

    Creating a central authority will no more eliminate spam than FCC control of the airwaves provided educational, infomrative material. It will simply create the power to sell adverts much like radio and TV. Some dumb asses will then make the case that the only way for all this great content to be created is through adverts, especially the newer TIA emailed spam.

    It does not have to happen and if it does, we must create an alternate network. Want to kill spam? It's easy, just make sending unsolicited comercial email a finable offense. Comercial email will go the way of the comercial fax for two reasons. Anyone selling something will have a way to get in touch with you. Anyone selling something can't afford fines. Real spam never hides and no one will be paying for the services of a spammer after such a law happens. The internet was designed without fancy controls but people who saw what how Ma Bell abused those controls. We must NOT put controls back in.

    --

    Friends don't help friends install M$ junk.

  31. Uh, no... by delmoi · · Score: 2, Interesting

    There are ways to have email with the same level of anonymity that we have today without requiring some kind of authoritarian system. The most promising is the use of sender-verification. Rather then having some big brother type system setup, you have individual mail clients verify senders by replying to them and asking them to validate their humanity.

    As long as it's a real person with a real email address sending the info, it should get through.

    --

    ReadThe ReflectionEngine, a cyberpunk style n
  32. Shun the spammers by Anonymous Coward · · Score: 2, Insightful

    How about good old-fashioned shunning. Spammers should not be welcome anywhere. Anywhere you have to right to turn them away, you should. Tell their neighbors who they are and what they do. Send them a thoughtful letter explaining why you disapprove. Include copies of every page from several anti-spam web sites. Cut them off in check out lines in grocery stores. Get their cars towed immediately when their parking meters expire. When choosing a fake e-mail address when posting to Usenet, use one that belongs to a spammer.

  33. The real ASRG by Anonymous Coward · · Score: 0

    The article is full of quotes from the chair, Paul Judge, and none from any other members. Take a look at the mailing list archive and decide for yourself.

  34. These are all bad ideas by smiff · · Score: 1, Troll
    These plans are awful. Authentication services and trusted senders are a way for the certificate authorities to decide who can or cannot send mail (be it spam or political speech) [1]. Micropayments are a tax on speech. Challenge/response is patented. Opt-out tools depend on a centralized database from which spammers will harvest addresses. Reputation systems are an invasion of privacy.

    Most of the proposals are probably patented (as ridiculous as that may sound). No doubt the recent spam proposals are being pushed by folks with an agenda totally unrelated to spam. There is no way they would get this much media attention without a commercial PR department. Which begs the question, who is behind ASRG? The guy in charge has six pending patents on this very subject.

    To stop spam, we should use less invasive approaches such as bayesian filtering and common sense legislation (mandatory headers and spam-hunting boundies aren't a bad idea). We do not need privacy-invading, censorship centers which outlaw open-source solutions.

    -----

    [1] I fully expect that if we adopt authentication systems, the certificate authorities will permit paying marketeers to spam anyone they choose.

    1. Re:These are all bad ideas by SeattleDave · · Score: 1
      Surely you jest - yes? You can't possibly suggest that the solution continue to be client-based filtering? That doesn't reduce the amount of traffic hitting ISPs - and the cost burden remains unchanged.


      The RMX model really appears quite elegant. I suspect that if we magically removed 95% of the forged email traffic none of us would be spending as much time as we currently are lamenting spam, fighting spam and trying to solve it.

    2. Re:These are all bad ideas by md81544 · · Score: 2, Interesting

      Micropayments are a tax on speech

      Oh come on... do you complain about your telephone bill in the same way?

    3. Re:These are all bad ideas by perlchild · · Score: 1

      >Challenge/response is patented.

      Yes it is, despite prior art.

      Why do you think we have so many problems with spam?
      The spammers put enough money in the system to skew it.... /me wonders if google, overture and other pay-for-search entities are behind the antispam movement, to limit competition for commercial entities' advertising

  35. SMTP-Auth by delmoi · · Score: 1

    Why not just use an ISP that offers SMTP-Auth or POP before SMTP so you can email from anywhere?

    --

    ReadThe ReflectionEngine, a cyberpunk style n
  36. You do by mdfst13 · · Score: 1

    You authorize your own machine to send email from your domain. If you don't own a domain, then you need to either get one or find an (authenticated) SMTP relay for your domain.

    Note: with this, there is no longer any reason to blacklist DHCP IPs. If they have a domain (or an authenticated relay), they can send email again.

  37. Let's find a cure, not a treatment. by mabu · · Score: 3, Interesting

    The spam issue has some interesting parallels in the models of the new economy. Just like in other industries like healthcare and pharmacuticals, the major players are not interested in a "cure". That's not profitable for them. A more appealing approach for them is some method of "treatment", preferably something that obligates the user to continually do business with them in perpetuity in order to maintain their spam-free condition.

    Efforts to regulate the content of spam messages, inconsequential civil penalties, client side filtering, and any system which filters mail based on content caters to this impotent approach to addressing the spam problem. It offers no cure. It does nothing to reduce spam; it does nothing to discourage spammers; it does nothing to address the most serious problem of spam, which involves unfair and often illegal exploitation of resources.

    Maybe this is the new way. We don't actually solve any problems. We just put bandaids on them and allow them to consume more wasted resources, and the demand for more resources, hardware and bandwith is what drives the new economy.

    Call me idealistic, but I think it sucks. I am appalled that so many people will settle for such shallow and ineffective approaches to these problems. But I guess I shouldn't be surprised. Most of these people profit from the existence of spam so why bite the hand that feeds them on a major artery when you can collect some bucks and merely trim their nails?

    1. Re:Let's find a cure, not a treatment. by Proudrooster · · Score: 1

      What? Actually fix a problem? Just take this asprin for your brain tumor and you'll be fine. Seriously though I agree with out. The root cause needs to be addressed. If that means getting the tar, feathers, and rail back out to use on the spam-kings then that needs to happen.

      I was hoping that the ISP's and router backbones would have put a stop to spam before drastic action had to be taken. It's always better when the industry can police itself. Now, we'll get a national anti-spam law that makes possession of MP3's a felony. What a shame.

    2. Re:Let's find a cure, not a treatment. by Anonymous Coward · · Score: 0

      Feel free to lead the way.

      Got any ideas at the moment? Or just talking?

  38. Re:Atheism Is The Tool of Communism by Anonymous Coward · · Score: 0

    Dude, you're one pick suppy!

  39. The Internet was Founded on Trust. Do This. by minas-beede · · Score: 4, Insightful

    The internet started on a model of trust. We know we can't trust the spammers and we knock ourselves out trying to implement that distrust. All the while we operate in a manner the spammers can fully trust: if a system says it's an open relay it really is, if a system is secured against being an open relay it proudly proclaims as much. We're just as honest about open proxies. We assist the spammers thousands of times a day by being trustworthy. Isn't that exactly why why they find it so easy to commit abuse? We keep being honest and trustworthy with the spammers - we help them. Stop doing things that lead to our being hurt, start doing things that hurt the spammers. It's an easy and logical progression to make.

    It's time to destroy the spammers' trust in us. This should have no impact on anything legitimate: it's targeted on the spammers. Those who never go looking for open relays will never be deceived by fakes - it's only the spammers who fall victim to the deceit. Same for open proxies - who goes looking for them other than abusers? Doesn't that seem to be exactly right - harm those who would do harm, don't touch the rest? There are behaviors that only spammers exhibit. Target those, make life miserable for the spammers.

    The ASRG methods, all of them, are designed to be the same for everyone - they are targeted on what spammers and non-spammers do in common and then are supposed to make use by the non-spammers impossible. To do that everything will have to be changed. That will take years and it will take nearly full compliance to be effective. It will be like the "secure open relays" campaign of a few years ago. To actually stop spam that had to be universal, or very nearly so. Instead there are still hundreds of thousands of open relays, more pop up every day. How many years for full compliance? Alternately there may have to be a D-day for a total switchover - a source of huge complexity and disruption. Before commiting to that isn't it necessary to make sure there is not something less drastic which will work to end spam?

    If instead people opposed to spam change their behavior toward the things spammers and only spammers do then ordinary email can be left as it is - if those behavior changes end spam. Foremost of the behavior changes would be stop ignoring spammer abuse. Spammer abuse is an easy target, an easy path to hitting spammers and completely missing non-spammers. Spammers have two choices: spam direct or spam via abuse. If you knock down spam via abuse then they're left with direct spam. That you can hit adequately using blocklists. ASRG wants to make spam impossible by making every single spam message imposible. That's overkill - it's only necessary to make spam cost more than it returns. That can be done - without a total reengineering of the system.

    The big question is: are anti-spammers smart enough to stop spammers by going after the abuse? I say they are, when you include in "anti-spammers" all the people that do not like spam. The alternative position would seem to be that anti-spammers are smart enough to stop spam by changing the entire internet but not by doing anything lesser. I can't agree to that - not unless those limited-intelligence people explain why that is. Isn't there the roots of a paradox in that?

  40. Disrupting email will backfire. by Photo_Nut · · Score: 2, Informative

    There are several good scenarios which depend upon the way the SMTP system works currently that will break as a result of a change like this.

    What do we do for the millions and millions of users who currently send mail via older software from their home system, tell them that they are screwed out of sending email? The beauty of SMTP is that it works. Assuming that this change is implemented, it will probably cause millions of users pain, and those users won't put up with it.

    Once those users switch to a different email system, say for example, Microsoft Exchange. The damage to SMTP will be complete. Then again, what am I saying... I have stock in M$... Bring it on. :P

    Seriously, though. Filtering is the responsibility of the client, not the server. Why do we need to impose new rules, which are just as easy to fake, rather than working on making the system work better for the user.

    1. Re:Disrupting email will backfire. by I_redwolf · · Score: 1

      This isn't informative; I tell you what, name me two scenarios that will break as a result of a change like this and I'll retract that statement. Especially considering the fact that in the RFC there is a clear section for Compatibility where it states that older setups simply won't do the check.

      It's time a concerted effort is made to prevent spam and this is technologically feasible and sound. There isn't one logical reason I can think of that sending email from anonymous domains or a record without a pointer should be allowed.

      From what I've read and from what I practice myself this isn't what I'd necessarily refer to as filtering, it's more along the lines of proper technological behavior or better yet closing an unintended and useless feature that is causing nothing but harm. However, spam can still be sent even after implementing this system. It's just that the record is alot easier to deal with. No admin wants to sit there and go through the trouble of finding out where spam came from, ie: going through mail logs, diggin ripe/arin databases searching for who the ip belongs to, emailing abuse, then the abuse team (if there is one) has to take the time to search for what user was using the dynamic ip at the time. Needless to say alot of ISP's and mom and pop services don't even have in-house systems logging this information because it's just too expensive. All this effort to stop one spammer who'll just switch service, isp or whatever and send you more animated gifs of a young woman sucking on a horse penis and what do you get for your trouble? Nothing, nothing but more horse penis; but this time it's 100% better than the last spam around and maybe if you haven't gone completely insane, a mild headache followed by lots of frustration and an urge to kill.

      With the new system implemented a record of where the spam comes from makes it easier for client filtering software to send out automatic messages as the spam is received, etc etc. It'll also cut down on alot of the anonymous/no PTR fly by night spamming.

      I think it's a step in the right direction and hope that it becomes standard sooner than later.

  41. No key necessary by mdfst13 · · Score: 1

    If Monster.com wants to send an email as one of its customers, it should authenticate with the customer's email server and send the email. If the customer wants to allow them to do this, they can give Monster.com their authentication info.

    The reason why mail servers don't bother to support authentication and secure support is simple: there's no point to it. So long as I can send an email as anyone from any computer on the internet, what is the point of requiring authentication at a server that I can avoid? Secure transport solves problems with hijacking and intercepting transmissions. Neither of those things are at all prevalent (and they really have nothing to do with spam; if I have a spam server, there is no reason why I can't set it up with a secure transport mechanism).

    1. Re:No key necessary by oolon · · Score: 1

      I was not thinking of using a secure transport I was thinking that the messaged would be signed with the public key so the reserving server know it orginated from a server that was allowed to send email for that domain even though it might have been though a number of relays before it got to it. Yup everyone could have signing in there clients, but that means end users have to be educated rather than System admins.

      James

    2. Re:No key necessary by dmeranda · · Score: 1

      Yes, that sounds like something that actually could be very useful. Have the keys actually distributed in the DNS RRs, rather than having to rely upon a complex and sometimes untrustable CA network. There would then have to be something in DNS that could state a sender's policy, such as "all mail coming from my domain must be signed by this key -or- must originate from this IP address(es)"

      Of course the biggest win for a company signing its email in such a manner is not immediately to reduce its volume of inbound spam...but rather to prevent other spammers from forging mail as having come from that company. Fearing getting blacklisted or getting 100000 bounced emails that you never sent would disappear.

  42. SPAM@Home by More+Trouble · · Score: 2, Interesting

    Most of the SPAM that comes to my site is currently of the SPAM@Home variety, i.e. the same message comes from hundreds or thousands of compromised hosts, from thousands of different addresses, to thousands of my users. As far as I can tell, rMX won't have any effect on these distributed SPAM networks.

    :w

    1. Re:SPAM@Home by Anonymous Coward · · Score: 1, Informative

      Actually, RMX does reduce the utility to spammers of compromised home machines. There is a nice discussion of this property here.

  43. The real ASRG: Research Group by AndroidCat · · Score: 1

    Are these guys supposed to be actually implementing anything or just doing research? The entanglement of the IRFT and (one of their sponsors) the IEFT in the stories make it unclear, but the group's charter make it clear that they have to define a lot of terms first.

    --
    One line blog. I hear that they're called Twitters now.
  44. I don't care if you think it's "fair", etc... by rayd75 · · Score: 2, Interesting

    My organization has roughly 120 Internet email users and a quick grep -c of the logs reveals that in the last week my server has denied 700 messages from open relays or known sources of UCE. In spite of this I have to wade through around ten spam emails each morning before I can get to work and I regularly get questioned by vice presidents and the CEO about why I'm "not blocking pornographic emails". RMX, micropayments, filtering, and other solutions may not be ideal. They may, to some degree, restrict free speech. They could require extra effort on the part of legitimate senders or admins of spam-unfriendly ISPs. It's possible that such schemes may do away with Internet email as we know it... but after deleting the fourth email this week (each from different network) containing an animated GIF of a woman sucking a horse's penis I don't give a crap. The problem has to be dealt with and if that means that you have to change email clients, switch to a email service that supports authentication, use a web-based service when traveling, update your DNS records, or close your open relay that is fine by me.

    1. Re:I don't care if you think it's "fair", etc... by minas-beede · · Score: 1

      "My organization has roughly 120 Internet email users and a quick grep -c of the logs reveals that in the last week my server has denied 700 messages from open relays or known sources of UCE."

      Yes, and my ISP, which uses Brightmail, lets through tons of crap. I know a message from "Frank" is going to tell me I should enlarge my penis. Brightmail doesn't.

      For what you do (use a blocklist) the solution would seem to be faster addition of IPs to the blocklists. All those IPs that are sources of the spam to you - those should be listed instantly. It appears that much of the current anti-spam technology is grossly labor-intensive: somebody has to look at the spam and then enter the source IP in the blocklist. Why is there no way you could at least send the IPs you've seen as sources directly to a listing service that would automatically list them? Why is there (apparently) no listing service that uses a DCC front end - one that recognizes spam by its checksum and then adds the source IP to a blocklist if it isn't already there? If DCC fails because of spammer clerverness why isn't there a listing service that uses Bayesian filters to identify the spam?

      Getting back to your system and logs, how many relay attempts did you reject last week? Most of these surely are spammers who are looking for new open relays. If your company had a second box with a different IP that just accepted all incoming email and delivered nothing you'd very quickly build a database of which spammers (identified by source IP and by test email destination or bounce address) are testing your IP space. You almost have that in your logs anyway - the second system means you'll trap the messages and be sure they are tests. You'll also learn what spammer tests look like. That's a big part of the spam problem - shouldn't people know what the spammers do?

      I advocate honeypots but I have no monetary attachment to them - I'll make $0 from them whether they are used or not. I have no problem with them being unused and instead for a really effective blocklist plan to be implemented. If every spam source were listed and if every mailbox were protected by a blocklist then no spam would get delivered. ASRG could be working on such a solution, even as a temporary stopgap, but they aren't.

      Blocklists get encumbered with extra stuff. The first encumbrance is the nasty attitude toward the listee: he's dirty and he should remain on the list forever - that sort of thing. That interferes with the function, which is: block spam. The blocklist is not a means of punishment - forget that. I'd say the effective blocklist would use automated techniques to list IPs and would age off IPs very quickly - in a day or less. Ageing off is OK: if spam comes again from the IP it will again be listed - listing is automatic in my scheme. What's really needed most is a list of trusted sources for the bad-IP information. You know you can be trusted (I think) - the problem is that of how the listing organization knows you are to be trusted (to send accurate information on which IPs should be blocked.) There may be a good start: if AOL, MSN, and Hotmail are going to trust each other that should lead to a large proportion of the mailboxes being protected. How do others get into the system?

      Some spammers probably consult lists of open relays to find ones to exploit. Who monitors the pattern of inquiries to blocklists? Which open relay blocklists salt the lists with honeypot addresses?

      There's tons that could be done that isn't, lots of it very easy to do. Where's the discussion on those things? NANAE? No. ASRG? No. Where?

  45. Force closure of open relays... by TallEmu · · Score: 1

    I wonder how hard it would be to create some code to close open relays on popular mail servers such as MS Exchange?

    Assuming this code could be written, one would then write a selection of Viruses and/or worms which would carry this application as the payload.

    It would be all the more amusing if this were an email virus. Then we could very easily purchase a CD containing millions of fresh names for only $19.95.

  46. Make Your Own Spam Arrest by xombo · · Score: 2, Interesting

    My article for building this got denied last night so I'll post it here instead. To create a list of authenticated users automatically that allows people to enter their address etc.. via a web form (much like Spam Arrest visit this how-to. It requires only a web server, php interpreter and Mercury e-mail server.

  47. Re:The Internet was Founded on Trust. Do This. by mabu · · Score: 2, Interesting

    I disagree. The Internet was founded on exactly the opposite. The whole distributed computing concept was bourne out of a distrust for any single node being too important.

    In effect, on the Internet, nothing is trusted.

    The reason we have a spamming problem is not because the net is too trusting by design. It's because the medium is largely unregulated and transgressions therein are unenforced, so spammers operate with little fear of consequences.

    In no other medium can you exploit other peoples' resources like you can on the Internet, and there are plenty of laws already, both criminal and civil that address these transgressions, but unlike other mediums, there is no agency or organized force in place to do something about it.

  48. why not authenticate to mail server to send mail by ningcat · · Score: 1

    I authenticate to check mail, so what is wrong with authenticating to send mail ? Then I could use the intended relay for any account from anywhere on the internet.

    Seems obvious enough, I must be missing something. Why wouldn't this work ?

  49. no one? I would! by Matt+Ownby · · Score: 1

    I can tell you right now that if this RMX thing got implemented that I would reject all email with a missing RMX record with a bounced message explaining the reasons for the rejection and instructions on how to contact me.

    As it is now I already reject _all_ incoming email (to my primary, spam-infested address) with a bounced message with instructions on how to contact me, so in effect I would actually be allowing more email than I am now.

    For those of you curious to see what my alternate contact method is, go here .

  50. Yeah rite... by Kjella · · Score: 1

    I believe you'll find that's what Sender/From/Reply to address are there for. The envelope address is supposed to be an electronic equivalent of a postmark - on a real letter you can write any return address you like, but don't expect your home post office to stamp it with the university post office mark.

    And 0.2 seconds after this system is running, someone will come up with the incredibly bright idea to replace the "from" adress with the "sender" address. I've gotten enough threats/warnings after idiots getting infected by viruses that create mail that appears to come from me to know how that works. So many people believe the "from" field has any value, that somebody is sure to "fix" that problem.

    Kjella

    --
    Live today, because you never know what tomorrow brings
  51. Re:why not authenticate to mail server to send mai by perlchild · · Score: 1

    mail programs don't use it by default, hence grannies and other "limited computer literacy" persons don't use it
    which means isps which cater to those don't bother to make it a policy to ENFORCE authentication for mail...(more tech support and more cpu use on mail servers)
    To make authentication work, you will have to make it mandatory... except for same-host mailing lists and automated processes(X-to-mail gateways, ticketing systems, etc...)

  52. Sure by cameldrv · · Score: 1

    All you need is a universally acceptable micropayment infrastructure. Oh yeah, and to send email now you need an account with money. You have to be able to deposit this somehow. If you don't have a credit card, you are out of luck. This shuts down all free email services. Payment based spam solutions should be a very last resort, as it is the end of email as we know it. I want to be able to communicate with people that have no prior relationship with me. I just don't want my email box full of spam.

  53. RMX-plus by delmoi · · Score: 2, Interesting

    Here are some ideas I came up with that build on RMX to help prevent, and prosecute spam.

    The first involves anonymous domain names. The author of the draft suggests simply not accepting mail from annon domains. I don't know if I really like this idea. A better system might be a RTBL type list of anon domains known to vouch for spam. That way someone could get a domain name without giving up personal info, and still be able to send mail.

    Another usefull feature would be to sue non-forging spammers. Everyone could upload their spams to a group server. Since most states have laws that allow you to sue spammers for small amounts of money per message, once enough are collected from a single domain a lawsuit with enough of a financial incentive to actualy go through could be undertaken.

    --

    ReadThe ReflectionEngine, a cyberpunk style n
  54. RMX draft's author's worries by ftobin · · Score: 1

    It's interesting to read the RMX draft's author's concerns that RMX would never be deployed:

    10. Deployment Considerations

    Is there a concise technical solution against Spam? Yes.

    Will it be deployed? Certainly not.

    Why not? Because of the strong non-technical interests of several parties against a solution to the problem, as described below. Since these are non-technical reasons, they might be beyond the scope of such a draft. But since they are the main problems that prevent fighting spam, it is unavoidable to address them. This chapter exists temporarily only and should support the discussion of solutions. It is not supposed to be included in a later RFC.

    10.1. The economical problem

    As has been recently illustrated in the initial session of the IRTF's Anti Spam Research Group (ASRG) on the 56th IETF meeting, sending Spam is a business with significant revenues.

    But a much bigger business is selling Anti-Spam software. This is a billion dollar market, and it is rapidly growing. Any simple and effective solution against Spam would defeat revenues and drive several companies into bankrupt, would make consultants jobless.

    Therefore, Spam is essential for the Anti-Spam business. If there is no spam, then no Anti-Spam software can be sold, similar to the Anti-Virus business. There are extremely strong efforts to keep this market growing. Viruses, Worms, and now Spam are just perfect to keep this market alive: It is not sufficient to just buy a software. Databases need to be updated continuously, thus making the cash flow continuously. Have a single, simple, and permanent solution to the problem and - boom - this billion dollar market is dead.
  55. your sig by Anonymous Coward · · Score: 0

    I just noticed that a few days ago, when I would click on a thread to see at least 3 +5 funny posts right at the top... Then I thought back, a few months ago, it was 1 or 2. Last year, maybe one at the top...

    Argh, its getting annoying. I think I'm gonna re-do my pref's to make funny -5 ...

    sorry for the off-topic rant, but its getting farking annoying.

  56. This stops mass mailing worms too (only partially) by ckan · · Score: 2, Insightful

    Most mass mailing worms send infected email with forged sender address. This technique seems can stop large number of these emails too (except when the domain of the forged address is the same as the domain of the real one). This reduces the number of complaints against the wrong person of sending virus.

  57. ADV: by delmoi · · Score: 1

    simply putting ADV: in the subject line would aliviate all of these problems. Don't want spam? Have your mail server drop anything with ADV. With IMAP all you need to d/l is the subject lines anyway.

    POP is for PUNKS.

    --

    ReadThe ReflectionEngine, a cyberpunk style n
    1. Re:ADV: by Daniel+Phillips · · Score: 1

      simply putting ADV: in the subject line would aliviate all of these problems. Don't want spam? Have your mail server drop anything with ADV. With IMAP all you need to d/l is the subject lines anyway.

      First, it should be a real header, not a hack to the subject line (or perhaps as well as a hack to the subject line). Second, it doesn't fully solve the bandwidth-theft problem. Many people don't have the option of using IMAP, and besides, have you every tried IMAP? It sucks for performance.

      --
      Have you got your LWN subscription yet?
    2. Re:ADV: by Ben+Hutchings · · Score: 1
      Many people don't have the option of using IMAP, and besides, have you every tried IMAP? It sucks for performance.

      Maybe you were using the wrong IMAP server - e.g. UW-imapd, which uses Berkeley mailboxes. Cyrus imapd, however, is nice and fast.

  58. if you read the proposed RFC, you'll see the..... by delmoi · · Score: 1

    solution. Simply block mail from servers with to many available mail servers. 4 billion is quite a bit :P

    I think the solution is to setup a 'blacklist' of anon domains that do send spam, dissalow mail from domains that validate everything, and forwarding from 'legitimate' (i.e. non-forged) to a central authority to handle the legal work and pass on the juicy law-suit winnings : P

    --

    ReadThe ReflectionEngine, a cyberpunk style n
  59. SPAM blocking is SIMPLE and EASY dammit!! by Haxial · · Score: 0
    I do not understand why I continue to see so many half-effective anti-spam schemes and complaints about spam. Why on earth is everyone making such a big fuss about spam?? People do not seem to understand that near-perfect blocking of spam is EASY.

    I'm not just trolling, there are actual RESEARCH STUDIES which confirm what I am saying. For example, the CDT and FrontBridge studies. I quote these studies on my spam webpage:

    http://www.haxial.com/spls-soapbox/spam.html

    Spam is a complete non-issue for me. I receive virtually no spam. The number of pieces of spam that I receive in 1 year, I could count on 2 hands. The solution is so unbelievably simple that the fuss everyone is making about spam is totally ridiculous and absurd -- it is EASY to stop spam, and the research studies confirm this.

    1. Re:SPAM blocking is SIMPLE and EASY dammit!! by krray · · Score: 2, Insightful

      Whatever. His basic statement is to ditch your existing email, get a new one, get a couple of others for misc purposes, and never give out your email address.

      Go Hide.

      Bad answer to spam my friend. And frankly, it IS bullshit. I have had my email since 1992. It is me @ my domain. I absolutely possitively REFUSE to give it up.

      IT IS MINE.

      I won't jump through hoops and do this and that for the spammers to hide from them. I also just happen to have hundreds of spam trap addresses and they silently eat the spam and block the IP subnets. No questions asked. Hoops like this I'll jump through -- because logically it is more fun than "just hit delete". I personally like a good challenge.

      The only way to get unblocked is a phone call to me. I have been doing it this way for a while (years) and have gotten now four (4) such calls across a half a dozen domains I manage. I see maybe 1 spam a week now.

      There are, however, THOUSANDS of attempts daily and ~100 new subnets being added daily (recently). Shortly I'll have ALL the dialup & dsl lines identified across the entire Internet. Sad really.

      I personally like the RMX record setup myself. I've always questioned why it isn't like this already. Can the spammers themselves properly setup a mail server and spam away? Sure. I can also block them that much easier. It's going to be a LOT harder for them to move around all the time. Hi-jacking dialup's and just using them will no longer work (and this has been their #1 method to date). The #2 method, hi-jacking mail servers themselves, will continue, but their numbers are limited (if not already all blocked :).

      This won't mean one more bit of work for the end dialup user moving from ISP to ISP (legit). It will mean another configuration for the domains, but if it works as planned? Problem seriously cut back if not solved.

    2. Re:SPAM blocking is SIMPLE and EASY dammit!! by Steve+B · · Score: 1

      Avoiding war is SIMPLE and EASY dammit -- if some other country wants your land, just roll over and give it to them.

      --
      /. If the government wants us to respect the law, it should set a better example.
  60. Here's 2 examples and an alternative protocol. by Photo_Nut · · Score: 1

    Scenario #1:
    Say I run a small Linux server on my DSL line. I have a friend give me a DNS entry off of his domain, as I have a static IP on my server. I now have a DNS which can receive emails, only that it won't reverse DNS the same because my ISP owns the IP address block. I can't send emails now from my server because nobody reverse authenticates me.

    Scenario #2:
    Say that I am a student on a university campus, which for some reason won't allow SMTP sending from outside the network as inside the network. This is as it should be, right? But it does allow POP. My computer is on the campus network and configured with whatever mail client it uses. Then suddenly, I'm on spring break, and I bring my laptop home to my families DSL/WiFi network. I can still download my mail, but since I'm off campus network, I can't be authenticated as myself to the mail server. No problem. My ISP lets me send mail with their mail server. Oh wait, new restrictions prevent me from sending this email.

    If you think that this second scenario is a joke, I worked as a Help Desk worker at a University which did this, and the University tried to pawn off a mostly broken web interface as the answer to checking email from home on break. Imagine answering the phones a day later, trying to explain to users all day long why they can't send their email. Now multiply that pain by all ISPs across the world. The problem isn't backwards compatability. The problem is forwards compatability. The new servers won't accept you as a sender unless you are now listed in DNS. The old ones will be the only servers accepting any mail...

    The real problem here is not actually solved...
    The problem is that authentication of the sender of an SMTP email doesn't exist. If mail sending servers authenticated themselves, then this could work without sweeping changes. Making the sender be authenticated by DNS is a bad idea. I can spoof any IP I want to with the right TCP/IP packets. PGP signatures already solve the authentication problem. Why don't we have mail clients/servers sign their messages with a private key corresponding to a public key retrievable from the mail exchanger. Compliant servers will then check when they receive email from any mail exchanger that the origin's mail exchanger has the public key for the message AND that it authenticates that the private key did sign the message.

    Any time you use a client compatible with this system, your public key + password would produce your private key to sign your documents and then your identity is validated by your server. Yes, this would basically mean that the Verify SMTP command would be a MUST if you send out signed mail in this fashion. It would mean opt in. Of course, PGP already does this... but take it to the mailserver level, and do it automatically as part of SMTP, and this would be far more effective than breaking SMTP with checks against DNS. SMTP servers already have to store lots of information about their accounts. Why not add the overhead of storing a public/private key pair along with a password to unlock the private key for sending, or do like the POP3 and MD5 hash the password after appended to a unique time/date/random stamp to authenticate.

    One nice feature of this protocol is that if you attempt to mass email, you actually commit a small type of pseudo-DOS attack of authentications against your mail server.

    1. Re:Here's 2 examples and an alternative protocol. by I_redwolf · · Score: 2, Funny

      Say I run a small Linux server on my DSL line. I have a friend give me a DNS entry off of his domain, as I have a static IP on my server. I now have a DNS which can receive emails, only that it won't reverse DNS the same because my ISP owns the IP address block. I can't send emails now from my server because nobody reverse authenticates me.

      Incorrect.. you isp does reverse authenticate it's IP address still. Feel free to "host yourip" and you'll get your reverse ptr domain. To see how this works I wrote in detail to another slashdot user who wanted to know. Here is the post you might want to read.. oddly enough it was only 2 weeks or so ago that again I was talking about this.

      Say that I am a student on a university campus, which for some reason won't allow SMTP sending from outside the network as inside the network. This is as it should be, right? But it does allow POP. My computer is on the campus network and configured with whatever mail client it uses. Then suddenly, I'm on spring break, and I bring my laptop home to my families DSL/WiFi network. I can still download my mail, but since I'm off campus network, I can't be authenticated as myself to the mail server. No problem. My ISP lets me send mail with their mail server. Oh wait, new restrictions prevent me from sending this email.

      This one doesn't even make sense. That situation has nothing to do with this new system we are speaking. You're problem could of been easily fixed with SMTP-AUTH if you're talking about what I think you're talking about or IMAP or something along those lines. That is just too confusing to even decipher.

      The rest of it is you just trolling... right? If not you really should search google for smtp-auth, pgp mail and then search for challenge mail systems.

      Making the sender be authenticated by DNS is a bad idea. I can spoof any IP I want to with the right TCP/IP packets.

      ?? So you're going to spoof an IP and then hack the dns server wherever the ip belongs to, to reverse to a valid domain?

      Heh, no offense, but you're making absolutely no sense. Haven't provided any scenarios and the protocol you speak of just simply doesn't make sense.. This whole post just doesn't make sense. Is it the chewbacca defense?

  61. Erm... by aaaurgh · · Score: 3, Funny

    "the ASRG wants to provide administrators and users the tools necessary"

    Are they going to e-mail everyone with an offer to sign up? Oops! ;-)

    --

    Go permanent? In your dreams and my worst nightmares.
  62. We are not 24/7 consumers by gad_zuki! · · Score: 1

    >They were marked (like ADV:) for easy filtering

    A lot of people, including yours truly, once thought that was a good idea, but lets face it: we're people first and consumers second (if not third, fourth, fifth, etc).

    This is a classic push/pull debate. If I want coupons or deals then I'll go to the damn deal sites. I don't need Kraft telling me that if I print out this email I'll get eight cents off some cheese-related product in my inbox. Imagine getting that on your answering machine. Now imagine getting that on your machine 50+ times a day.

    Advertisers and marketeres are going to be forced to realize that convering every surface and every information point with ads is counter-productive and will only piss off consumers and keep creating an even larger anti-advertising backlash. They want nothing more than to make us constant buying machines and it just ain't gonna happen.

    On that note I'll plug my ad blocking project (simple hosts file method with installer) just to piss off the right people.

    http://www.everythingisnt.com/hosts.html

  63. What's wrong with using the law for this one? by Richard_Davies · · Score: 3, Interesting

    Slashdot is for geeks so I guess a technical solution to spam seems logical. However, is fixing this legally really that hard? First, it is a problem that has governments and corporations and users - in fact everyone except the spammers - are all on one side. It should be possible to get an international agreement to ban spam in this case. International agreements can/do work if they have support and they are realistic (for example banning CFCs worked). So the support is there - is it realistic? One of the things this group avoided is to try to define spam. But why do you need to have a precise definition? Something simple should work like:

    For any mass email that is sent, the sender must be able to prove that the receieve gave his/her permission. Certain standards could be set here (eg. this permission must be opt-in for example). All bulk email must contain the details of the sending company and the option to ask said company to remove your details. Any company violating any of these rules or *aiding* a company to conceal this information (eg running an open gateway) should be fined heavily. Any country not signing up should be suject to sanctions (eg they cannot receieve international internet access or IT services from any signing country until they enforce these laws).

    Now there are probably places where suggesting like this could be refined - but why is a legal solution to this problem such a wrong idea in general?!

    1. Re:What's wrong with using the law for this one? by Pig+Hogger · · Score: 1
      First, it is a problem that has governments and corporations and users - in fact everyone except the spammers - are all on one side. It should be possible to get an international agreement to ban spam in this case. International agreements can/do work if they have support and they are realistic (for example banning CFCs worked).
      What's to prevent rogue nations (such as the Grand Duché du Luxembourg or Brazil or Lybia) from not enforcing those agreements???
  64. This article is bogus by TekPolitik · · Score: 1

    The ASRG seems to have trouble figuring out a plan for lunch, let alone agreeing on a plan for spam. There are some indviduals who have proposed their particular spam, but it's wrong to say the ASRG has come to any conclusions.

  65. Re:The Internet was Founded on Trust. Do This. by minas-beede · · Score: 1

    Sure. Distrust in the nodes, trust in the people. Ship sendmail so the default is to relay. Transmit unencrypted. Have RFCs - follow them voluntarily.

    Trust.

    So the early model was that the people could be trusted, the technology couldn't. Now the model being pursued is one in which the technology is trusted, the people aren't.

    Meanwhile anyone with a spare Linux/Unix box can trap spam by configuring the MTA (possibly sendmail) to accept everything and deliver nothing. It's boringly simple.

    (As described you mostly just trap relay tests. Deliver one of those and you'll very likely see spam follow.)

    My model is to not trust the people, too, and to devise ways to interfere with what the ones who don't deserve trust do to stop them. My model is also to destroy the trust of the wrongdoers in the rest of us: we won't willingly let them get by with their abuse.

    Too much efffort could be put into describing the grand scheme in some clever way - there should be a balanace in which a fair amount of effort goes into stopping the spammers.

  66. Denied :P by HeX86 · · Score: 1

    I think it's rather fitting that my new spamassassin installation blocked my slashdot news letter containing this article.