You can also specify an "ignorelist" for emails that should be always ignored and a "blacklist" that will cause a nastygram to be sent back to the sender everytime an email is received.
On a different note: please DO NOT send "automatic nastygrams", because in the majority of the cases the return addresses are faked and your nastygram will end up with an innocent third party that is being hit with a lot of bounces... (been there, done that). Nastygrams don't work, contacting their upstream provide abuse team is the best course of action.
The problem with current CF-technology is that it is limited in the number of programming cycles (ie: writes) before it breaks.
Although there are filesystems available for embedded systems that distribute writes to flash as much as possible, flash drives will wear out a lot faster than their microdrive counterparts in write-intensive applications.
Why do you think the world has as much peace as it has? It's the called the US Military. The bigger the imbalance of power between the US and the rest of the world, the less the rogue nations will be tempted to invade their neighbors.
Nice evidence that propaganda still works: I simply can not comprehend how someone with a clear view on facts can state these kind of things. There are about 40 armed conflicts going on right now on this planet, most of them taking place in Africa. In how many of these is the US Military intervening?
The US Military is all about protecting US intrests (which is kind of logical). The attitude of the Bush Administration that uses the "War on Terrorism" to excuse the outright agression just saddens me: it is quite clear that Bush wants to go to war no matter what - thereby putting a lot of human lives on the line (including US soldiers); and for what? Because not going to war would mean that he loses face bigtime (and probably the next election).
I'm quite sure that there are a lot of Americans out there that feel the same as I do.
If the average genuine mail to spam ratio on your system is 1/10 (ie: for each genuine message, you get 9 spam messages) this will have the inevitable effect that your infrastructure has to be capable of processing a load which is 10 times higher than would be required if there was no such thing as spam.
Given that 1/10 is probably a very conservative estimate (escpecially for big ISPs with a lot of J. Average Customers), you can imagine that this can have a huge impact on the systems required to handle this.
Also when a spammer is using a fake (or real) address at the ISP as a return address, a lot of bounces get directed there in very short period of time (which in fact is very much like a DDoS).
While silicon speed is still increasing at a mindnumbimgly speed, disk platters haven't. It's not costly to get a lot of storage (73GB disks are 'affordable'), but it can cost a lot to build a storage subsystem that can cope with the load and is relatively solid (raid / backup).
On top of that there are the hidden costs, eg: customer support for dealing with customer issues related to spam, system administrator time spent extra on dealing with spam-related problems.
I don't think it's so simple as to stating that "bandwidth is cheap" (which simply isn't true for a very big part of the world) and "storage is cheap" so spam can not cost much.
The data will be encrypted with a key that you have to safeguard (CD, floppy, hardcopy,...) before it is backed-up.
The central server only knows where the bits 'n pieces are stored of your encrypted data, but it does not ever get the key to decrypt it. The worst that could happen when the server is compromised is that somebody else could get the full encrypted datastream, which is only a bit more useful than polling/dev/random
[TONGUE_IN_CHEEK]
Doesn't really matter for the Walloons and French, since they have the uncanny habit of dubbing every single film.:-)
[/TONGUE_IN_CHEEK]
I must admit that it'll be difficult to adapt to the English names for our (Belgian) heros:-)
Yup, but when the computer requires shutting down for any reason (which can be as benign as a kernel upgrade, OS crash or HW upgrade) you've got some extra trouble for safekeeping your data.
Making the storage persistent by adding a technically quite simple feature (a battery) will make this independant of the system it is implemented in, even if the persistence is only for a short period of time.
"Sustained performance" is only a practical measure in a few uses (eg: multimedia). For most other things, latency (ie: seek times) has a far greater impact on performance. Even the fastest harddrives have seek times measured in milliseconds. With DRAM we're talking about nanoseconds.
The fundamental problem of "power is lost" can be solved easily by adding a battery on the drive.
Given today's security climate, that must mean... erasing the chalk?
No, that would be banning chalk from the stores using the DMCA; after which the geek community can set its hopes on Bruce Perens to chalk HP HQ.
Go Bruce!;-)
It's quite easy: the cablemodem has a serial port that is connected to the modem, and is programmed to dialin whenever it has upstream traffic. From there on, it's all ethernet, baby:-)
So you're free to use any router you want.
Exchange is actually a pretty decent mail server, although only using it for mail is pretty dumb - its groupware features are the killer app.
<IRONIC>
What groupware features?
</IRONIC>
Exchange is a reasonably stable email-platform, but calling it 'groupware' is paramount to calling a mini cooper a luxury sedan.
Single Copy Object Stores (that's what they're called in LotusSpeak) can be advantageous in some cases, but there ain't no free lunches: it's more difficult to manage, and if something's corrupted or needs te be restored from back-up, you're SOL.
The answer to your dillema is pretty straightforward: when you turn the light on, your *optical* mouse is noticing a change in the pattern on the desk, and interpreting this as the mouse being moved to wake the Mac.
Sounds good, but doesn't work for mac: if the machine goes into sleep mode, the optical mouse light shuts of. Moving the mouse won't wake the computer, clicking will do just fine.
I wonder if this technology would be extended to the private consumer level?
It already is... (here in Europe, at least). A lot of new expensive cars can't even be properly insured without some kind of carjacking/homejacking/theft protection device. Only thing it really does is shift the attention from the amateur thieves to the professionals, who know how to deal with these systems (aka: nick the car, and drive it into a container, on a trailer just around the corner --> Faraday cage --> No more phone home)
I have absolutely no idea how much power these watches can generate (probably not anywhere near enough, but it would be a fun experiment:-).
Get yourself a seiko kinetic watch, which generates power by movement, and stores it in a very efficiënt capacitor. Throw out the clock, and use the mechanism (or a couple of mechanisms, either parallel, in series or a combination of boh depending on the power requirements) to power your blinkenlight.
Seal aforesaid device in a package with enough air so that it floats. Attach a large weight with a thether to it, dump it in the surf and hope that it works:-)
The problem with that approach is that two mailservers with "backtracking" enabled would beat each other to dead checking one another before a single mail actually gets delivered...
Server 1: open connection to server 2, wants to send mail.
Server 2: gets request from server 1, opens connection to server 1 to check for open relay
Server 1: gets request from server 2, opens connection to server 2 to check for open relay
Server 2: goto step 2, repeat ad infinitum.
You need to get LVM compiled in your kernel.
LVM provides the ability to create snapshots of your volumes, so you can easily roll back
if anything icky happens. Mind you that write perfomance when using the snapshot feature goes down: instead of one write operation, every write becomes a read/write/write operation slowing things down. And this happens for every active snapshot, so you really can't have too much active snapshots:-)
Then again, if it's just for checkpointing (create snapshot), installing experimental stuff and then committing (delete snapshot) or rollback (restore from snapshot, delete snapshot), it should do the trick wonderfully.
If your data is stowed away on high-end storage, chances are that you can easily create snapshots of the data. (eg. EMC SnapView)
You can use snapshots to back-up your data at a "reasonable" pace.
If near instant-restores are a necessity, consider creating an off-site BVC using FC/AL over fiber.
Slashdot Mirror
Although there are filesystems available for embedded systems that distribute writes to flash as much as possible, flash drives will wear out a lot faster than their microdrive counterparts in write-intensive applications.
Or becoming president of the US of A, for that matter
</tongue-in-cheek>
The US Military is all about protecting US intrests (which is kind of logical). The attitude of the Bush Administration that uses the "War on Terrorism" to excuse the outright agression just saddens me: it is quite clear that Bush wants to go to war no matter what - thereby putting a lot of human lives on the line (including US soldiers); and for what? Because not going to war would mean that he loses face bigtime (and probably the next election).
I'm quite sure that there are a lot of Americans out there that feel the same as I do.
If the average genuine mail to spam ratio on your system is 1/10 (ie: for each genuine message, you get 9 spam messages) this will have the inevitable effect that your infrastructure has to be capable of processing a load which is 10 times higher than would be required if there was no such thing as spam.
Given that 1/10 is probably a very conservative estimate (escpecially for big ISPs with a lot of J. Average Customers), you can imagine that this can have a huge impact on the systems required to handle this.
Also when a spammer is using a fake (or real) address at the ISP as a return address, a lot of bounces get directed there in very short period of time (which in fact is very much like a DDoS).
While silicon speed is still increasing at a mindnumbimgly speed, disk platters haven't. It's not costly to get a lot of storage (73GB disks are 'affordable'), but it can cost a lot to build a storage subsystem that can cope with the load and is relatively solid (raid / backup).
On top of that there are the hidden costs, eg: customer support for dealing with customer issues related to spam, system administrator time spent extra on dealing with spam-related problems.
I don't think it's so simple as to stating that "bandwidth is cheap" (which simply isn't true for a very big part of the world) and "storage is cheap" so spam can not cost much.
The central server only knows where the bits 'n pieces are stored of your encrypted data, but it does not ever get the key to decrypt it. The worst that could happen when the server is compromised is that somebody else could get the full encrypted datastream, which is only a bit more useful than polling
Doesn't really matter for the Walloons and French, since they have the uncanny habit of dubbing every single film.
[/TONGUE_IN_CHEEK]
I must admit that it'll be difficult to adapt to the English names for our (Belgian) heros :-)
Yup, but when the computer requires shutting down for any reason (which can be as benign as a kernel upgrade, OS crash or HW upgrade) you've got some extra trouble for safekeeping your data.
Making the storage persistent by adding a technically quite simple feature (a battery) will make this independant of the system it is implemented in, even if the persistence is only for a short period of time.
"Sustained performance" is only a practical measure in a few uses (eg: multimedia). For most other things, latency (ie: seek times) has a far greater impact on performance. Even the fastest harddrives have seek times measured in milliseconds. With DRAM we're talking about nanoseconds.
The fundamental problem of "power is lost" can be solved easily by adding a battery on the drive.
Don't know why tho :-)
No, that would be banning chalk from the stores using the DMCA; after which the geek community can set its hopes on Bruce Perens to chalk HP HQ. ;-)
Go Bruce!
So you're free to use any router you want.
What groupware features?
</IRONIC>
Exchange is a reasonably stable email-platform, but calling it 'groupware' is paramount to calling a mini cooper a luxury sedan.
Single Copy Object Stores (that's what they're called in LotusSpeak) can be advantageous in some cases, but there ain't no free lunches: it's more difficult to manage, and if something's corrupted or needs te be restored from back-up, you're SOL.
Get yourself a seiko kinetic watch, which generates power by movement, and stores it in a very efficiënt capacitor. Throw out the clock, and use the mechanism (or a couple of mechanisms, either parallel, in series or a combination of boh depending on the power requirements) to power your blinkenlight.
Seal aforesaid device in a package with enough air so that it floats. Attach a large weight with a thether to it, dump it in the surf and hope that it works :-)
Server 1: open connection to server 2, wants to send mail.
Server 2: gets request from server 1, opens connection to server 1 to check for open relay
Server 1: gets request from server 2, opens connection to server 2 to check for open relay
Server 2: goto step 2, repeat ad infinitum.
LVM provides the ability to create snapshots of your volumes, so you can easily roll back if anything icky happens. Mind you that write perfomance when using the snapshot feature goes down: instead of one write operation, every write becomes a read/write/write operation slowing things down. And this happens for every active snapshot, so you really can't have too much active snapshots
Then again, if it's just for checkpointing (create snapshot), installing experimental stuff and then committing (delete snapshot) or rollback (restore from snapshot, delete snapshot), it should do the trick wonderfully.
You can use snapshots to back-up your data at a "reasonable" pace.
If near instant-restores are a necessity, consider creating an off-site BVC using FC/AL over fiber.