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Revising the Internet Email Infrastructure

Lauren Weinstein writes "People For Internet Responsibility (PFIR) today released a white paper aimed at starting discussion and work to fundamentally revamp Internet e-mail systems to control spam, forgeries, and a range of other problems, while empowering e-mail users rather than ISPs." Excellent start.

21 of 311 comments (clear)

  1. PGP by Richardsonke1 · · Score: 5, Informative

    Until this comes out, PGP is a great way to keep your email private and secure. It also deals with forged headers using email signing. MIT has a great client here

    --
    "Men lie."
    "Yeah, about sleeping with other women, but never about bioluminescent plankton."
    -Dan Brown
    1. Re:PGP by rtnz · · Score: 5, Informative

      I would suggest GnuPG, free as in free.

      GnuPG

  2. This is a total dead end. by FreeLinux · · Score: 4, Insightful

    They may well come up with some "standard" for a new internet email system but, nobody is going to use it. Hell ESMTP has been out for years and it still isn't supported by more than half the systems that are on the net.

    1. Re:This is a total dead end. by Hayzeus · · Score: 4, Insightful

      But in fairness, ESMTP doesn't pretend to address any problems as urgent as the spam problem. The hope, presumably, would be that necessity would drive adoption. Still, I have my doubts about how certification authorities are going to be managed. (see my other post).

    2. Re:This is a total dead end. by Xentax · · Score: 4, Interesting

      I dunno -- when I read the paper, one big group of candidates that came to mind as potential PCAs are those very same end-user ISPs.

      That is, when you sign up for dialup, or broadband, or whatever services your ISP provides, you'd get access to their mail server, *including* Pits certified by that ISP for any messages you send via their mailservers (given that you authenticate with them, something POP3 and IMAP already support, right?). It certainly keeps a fair amount of control and influence in the hands of that ISP, but it doesn't *preclude* alternatives, and it WOULD make it easier for those ISPs to follow good/friendly practices.

      That way, any other ISP/mail provider who is willing to receive emails from *YOUR* ISP would deliver your mail. Should your ISP get a reputation for harboring spammers or other miscreants, any given mail provider can choose to simply reject your ISP as a valid certifier (or subscribe to a RBL-equivalent watchdogging the various PCAs, perhaps).

      Obviously an ISP as your (or one of) your PCAs wouldn't be for everyone. Obviously there'd be a bit of a setup challenge, as far as getting various ISPs and other mail providers to recognize each other as valid PCAs. But those aren't insurmountable problems.

      In fact, it sounds a lot like the SSL certification system (probably no coincidence). Hierarchical PCAs would certainly be one way to organize the solution...

      Xentax

      --
      You shouldn't verb words.
  3. Why do people bother by gorbachev · · Score: 4, Funny

    SMTP is here to stay and it won't change within any reasonable time period. It's unfortunate that it's so unsecure, but that's just the way it is.

    Proletariat of the world, unite to kill spammers. Remember to shoot knees first so that they won't be able to run away while you slowly torture them to death.

    --
    In Soviet Russia, I ruled you
    1. Re:Why do people bother by Nutcase · · Score: 5, Insightful

      It's unfortunate that it's so unsecure, but that's just the way it is.

      I think it's great that it's not secure. Just like every other classic protocol that truly supports the net (tcp, ip, ftp, etc), it's not about what you put over it - it's about moving data as it's told. This distinction is what makes it so difficult to control or "own" the net. I don't believe we could build a "secure" protocol that retains the inbuilt freedom that we have today.

      Yes, people abuse that freedom just like they do any other, and yes, spam is so annoying that many who normally fight for freedom now beg to take it away in this instance, but there are solutions that don't involve removing freedom for everyone.

      The idea of challenge response is good.. as is baysian filtering.. as is pgp key signing, etc...

      And the solution to the abuse of bandwidth on the servers is not to recreate the protocol. it's to make sending spam pointless in the first place - and that happens at the ends. The middle needs to be stupid in order to be smart.

      And now my shameless (and probably inaccurate) retelling of "the world of ends" will itself end.

  4. Whoa, boys.. by grub · · Score: 5, Funny


    Have they passed their recommendations by Al Gore yet?

    --
    Trolling is a art,
  5. The "start over" fallacy by Ars-Fartsica · · Score: 4, Insightful
    You see this in software too. People think if they just "start over", everything will be okay. Wrong! You just get a new set of problems.

    SMTP is here to stay. We're going to have to live with it. Spam control filtering is getting better and there is a good chance that together with decent legislation, spam can be reigned in. A new system will ultimately just create new kinds of abuse, which wil lrequire the industry to take another two year cycle to address.

  6. PIT/PCA Questions by Hayzeus · · Score: 5, Interesting
    I may be wrong, but what, exactly, is to keep spammers from becoming their own PCA? Why can't they simply generate PITs willy-nilly?

    Sure, ISPs can block PITS from unsavory PCAs, but what stops spammers from creating new, bogus PCAs as needed? If there are only a few "recognized" PCAs, doesn't this tend to concentrate power into a relatively small set of entities?

  7. Follow Apple's lead by L.+VeGas · · Score: 5, Funny

    First thing is to rename it "i-mail".

  8. No, No, No by npcole · · Score: 5, Insightful

    I'm sick of reading proposals (often from industry profit-seeking types) who want to put a paid-for "stamp" or similar "token" on email. (I'm talking generally, though---yes---I did read this paper)

    It looks attractive logic:

    1. Lots of people use email
    2. We offer a system which will beat spam at a cost---our 'trusted 3rd party' or whatever---but only if people who use it can't talk to anyone else, so everyone has to use it
    3. Profit.

    This is NOT the way forward on spam. Nor, realistically, is anything which re-writes the rules for email. People like editing headers. In fact, if it weren't for spam, people like email as it is---period.

    The way forward seems simple:

    smtp servers should start requiring genuine users to log in. (though rarely used, there are smtp systems which allow this, and most major clients---yes even the MS ones---already talk to these servers and have done for years)

    servers which don't should quickly find their way onto blacklists.

    (I shall leave the exact way these blacklists should be used as an exercise for the reader)

    Simple. Low cost. Not a business model; but a clear solution.

    Anyone want to start writing to ISPs?

    1. Re:No, No, No by cjpez · · Score: 4, Insightful
      Spammers running their own mailservers are still going to be able to send out spam, though, 'cause they're authenticating to their own servers properly. You could argue that servers with spam coming out of them could just get added to blacklists, but that happens already for open relays, and the whole open relay thing is steadily beoming less of a problem as more admins wise up to it.

      Other problems start when you have people using hotmail and yahoo, etc, to send out spam. They're authenticating correctly, they're just using the accounts to send the spam. Your solution makes a lot of sense if SMTP servers are scarce, but broadband being what it is, it's basically trivial to set up one of your own and use that. You no longer have the controls of forcing people to use well-known, trusted servers. (Again, you can play games with blacklisting, but this already happens today.)

  9. Like all PKI schemes... by stevens · · Score: 5, Interesting

    ...it lives and dies by the efficacy of the CAs. If the CAs suck, then the credentials they send with email mean nothing.

    I like the idea, but I wonder which sort of orgs are going to be their "PCAs"? ISPs pretty much allow any comer onto their network, so giving all users a cert wouldn't stop people from making temporary accounts for spam.

    Perhaps the ease with which MTAs could cut off CAs (like cutting off domains) would help give incentive to ISPs (or whoever is the PCA) to crack down on their customer base, but that strategy is only marginally successful today. Why would creds make this strategy any better?

    Perhaps MTAs would be harder to config as open relays, because authn is required. But what percent of spam comes through open relays? If it's a big percentage, then this may help.

    Has anyone analyzed this scenario? I'd like to hear some informed thoughts on what sort of email regime we could expect if this were implemented.

  10. Obligatory Franklin Quote by Gothmolly · · Score: 4, Insightful

    Those who would trade freedom for security will lose both, and deserve neither.

    The current "hysteria" over spam is going to lead the Joe Sixpacks and the Mothers-protecting-their-children crowd to accept, indeed to beg for, restrictions on their liberties, all in the name of "stopping those spammers". For the rest of us, for whom "WWW" is NOT synonymous with "The Internet", this could have dire consequences. What if I run my own server, and I'm not "blessed" by the current Official AntiSpam Policy Du Jour ? Do I lose out?

    Spammers suck, use your filters. DON'T give the government (and media giants, and Big ISPs) the authority to rewrite the way that the Internet works.

    --
    I want to delete my account but Slashdot doesn't allow it.
  11. Too many goals by Elentar · · Score: 4, Insightful

    The problem with nearly every single encryption technology, or initiative for securing and improving Internet communication, is that it tries to solve too many problems at once. History has proven over and over again that it's the small, easy steps that move progress forward, not giant ones.

    PGP, HTTPS, S/MIME and countless other 'standards' have all made the same mistake in trying to force users to adopt multiple new rules. What's wrong with just providing encryption, without any of the additional burdens of establishing identity? Countless transfers are sent unencrypted every day because the cost of a web server certificate - which is only expensive because it establishes identity - is so high. Anyone can make a server that provides encryption, but such a server is useless with today's browsers. And yet, I'm supposed to have faith that the people Microsoft, AOL and Opera choose to trust are the people that I want to trust?

    It is obvious where email will change next, no matter how much money and time is spent on projects like this one. More and more people will use 'virtual receptionist' services that require you to return an auto-reply message to prove that you're real. Eventually, email clients will develop a way to autodetect and autoreply to these messages, until some sort of system is hammered out. You'll write your message, it will be delivered, the receiving server will connect back to you to verify that you're real, and your system will confirm it, all transparently. Someday, it'll happen in real-time, maybe. Spammers won't be able to use this, because of the increased load on a server that must stay online as long as they want their mail delivered.

    That's how change happens. Not because of a bunch of idealists get together and tell me to start PGP-signing my mail. You know what? I started doing that 3 years ago. I haven't once found a single person who even knew how to verify my messages. Not to mention the pathetic state that the keyservers are in, full of expired and forgotten keys, and easily corrupted (again, I know from experience - I corrupted my own keys in an attempt to remove them permanently).

    -Elentar

    --
    The wheel it turns, around and around, with an ancient rumbling sound.
  12. The ugly truth... by fmaxwell · · Score: 5, Insightful

    I see this as a dangerous time. Many people have discussed going to an e-mail system that relies on encryption and security certificates. Are we going to end up with another debacle like we have now for secure websites, where Certificate Authorities like Verisign and Thawte charge hundreds of dollars every year for a certificate and free certificates set off more alarms than a than a Great White concert in a gasoline-soaked tent?

    Will Microsoft make lucrative deals with high-roller Certificate Authorities to include them in the Microsoft Exchange e-mail server? Will you be unable to run a mail server without paying big bucks to some "trusted" Certificate Authority?

    If we are not careful, the only e-mail servers that will exist will be commercial e-mail servers where the owners can afford hundreds of dollars every year for certificate renewals.

    Why do I believe this? Because I follow the money. If Microsoft, Verisign/Thawte, Netscape, etc. think that there's a way to make money, they will push for a standard that ensures it.

  13. Alternative != replacement by TomatoMan · · Score: 4, Insightful
    For all of you crying that SMTP will never die because everybody uses it even though it's broken, RTFA.
    The Tripoli environment visualizes a "parallel" e-mail system that could operate alongside the existing SMTP e-mail environment for the indefinite future.
    Just because SMTP can't be fixed (it can't) doesn't mean it has to die - just that a better alternative has to emerge. I'll keep my SMTP servers running indefinitely and I'll keep SMTP mail, but as better systems emerge I'll be telling people that the more reliable way to contact me is with methods that I know aren't going to give me the experience of picking through the trash when I check my mail. I'll still check my SMTP mail, but probably with decreasing frequency as time passes.

    For those of you saying "just improve your filters," (1) give me a filter that can parse an HTML message containing only an image to determine whether it's spam or not (no, you can't reject all HTML mail or mail with attachments, if my brother drags-n-drops a picture of my nephew and clicks "send," I want to receive it), and (2) figure a way to keep the message from being delivered until that determination is made. Post-delivery filtering doesn't solve the bandwidth/cost/traffic problems.

    Be courageous, people. Nobody screamed that we didn't need the telephone because the telegraph worked fine. Protocols emerge from changing circumstances. SMTP had its use over the last 30 years, but its time is waning with the onset of the global public internet full of untrusted senders seeking to abuse the system. It's time for a better protocol, and I applaud everyone involved in making a serious effort at developing one instead of trying to fix the unfixable.
    --
    -- http://frobnosticate.com
  14. Adopt opt-in: Proven and perfectly constitutional by D4C5CE · · Score: 5, Insightful
    Last week at the FTC, many of the "experts" advocated sticking our heads in the ground though the sandstorm of spam grows ever stronger.

    Now we are told once more that the best cure against spam should be to reinvent something to replace the tried-and-true eMail system of decade-old reliability, just because some sociopaths apparently cannot learn to behave without getting a spanking (or jail time) and U.S. privacy laws are still too weak to stop the spam.

    And after all the years that spam has plagued the networks, that's quite a poor achievement for a nation that managed to outlaw junk faxes, and had confirmation from the courts that regulating advertising does pass constitutional muster perfectly well:

    "Nothing in the Constitution compels us to listen to or to view any unwanted communication, whatever its merit... We therefore categorically reject the argument that a vendor has the right under the Constitution or otherwise to send unwanted material into the home of another... We repeat, the right of a mailer stops at the outer boundary of every person's domain."
    Supreme Court
    Rowan v. U.S. Post Office
    397 U.S. 728

    Subsequently, numerous decisions have also made it crystal clear, over and over again, that neither the First Amendment nor the Dormant Commerce Clause are an obstacle to outlawing electronic spam, by fax or any kind of eMail.
    Nor is it at the expense of any legitimate business. Industry itself can't stand the spam anymore.

    This is not about "lawmakers never knowing enough about the Internet to regulate any aspect of it in a meaningful way", it's about doing something to prevent imposing compulsory changes to technology that keep fighting the symptoms rather than the cause.
    Congress should get over such shameful cowardice and make the simple law that's needed and proven to work.

    There is no need to re-engineer the Internet.
    There is no justification for widespread surveillance and data retention under the poor excuse of trying to track down spammers.
    There is no risk of banning mailing lists or commercial eMail.
    There is no doubt what the sociopathic behavior is.

    All that is needed is mandatory opt-in for unsolicited bulk eMail (encompassing all kinds of electronic messaging).

    And yet some self-proclaimed "experts on electronic advertising" (whose only merit probably is that they know how to spam because they've done it a trillion times at everyone else's expense) keep pretending that opt-in wasn't legal, or feasible, or desirable.

    Opt-in works, and it does not hurt anyone but the spammers.

    Europe has adopted it, Australia is adopting it (how far behind do you want the U.S. to be, are we to wait for China to outlaw spam before the U.S. will?!), but most importantly the USA have successfully adopted it themselves against junk faxes.

    There's probably something wrong in Washington D.C., and the news media in general, when the most insightful newspaper article on the issue comes from USA Today.
    Be sure to fax or eMail it to your congress(wo)man though.
    Don't spam them, but do attach some selected masterpieces of spam if you think they need an idea of what ends up in the inbox of their constituents, and of their children, 9 billion times, every single day.

  15. It has always struck me by Neophytus · · Score: 4, Insightful

    Have the SMTP amended so that MTAs perform a DNS check on the previous server, and if it doesnt match correct the header. With guarenteed un-forged headers then at least reporting will be a hell of alot easier.

  16. Re: IPV6 vs. "SMTP2" by gorbachev · · Score: 4, Insightful

    I think there's a fundamental difference between the problems IPV6 is trying to solve and what any "SMTP2" solution is trying to solve.

    IPV6 will solve the underlying problem of running out of IP space.

    "SMTP2" would NOT solve the spam problem, because it's not a technical problem, IMHO. Spammers would move over to "SMTP2" eventually. They'd just have to find that one little flaw or feature and they'd be back exploiting it like they're exploiting weaknesses in SMTP now.

    If widespread adoption of "SMTP2" takes anywhere near the amount IPV6 adoption is taken, it's not going to work. Spammers would have 5 years to study the new technology and develop solutions to get their crap across the new protocol.

    By the time "SMTP2" is in place and used by everybody, the spam problem would no longer be what it is now and we'd be back in the cat-and-mouse game with spammers and their spamware techniques.

    All the "SMTP2" solutions I've seen would make normal Email communication between non-spammers much more difficult. I think that's something that should be avoided, even at the cost of not solving the spam problem using technology solutions.

    Proletariat of the world, unite to kill spammers. Remember to shoot knees first, so that they can't run away while you slowly torture them to death.

    --
    In Soviet Russia, I ruled you