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Spam filtering

The NewsLog of Flemming Funch
 Spam filtering2003-05-26 15:11
13 comments
by Flemming Funch

Spam is an overwhelming problem for my e-mail inbox. I get maybe 20 spam messages for each message I really should get. I'm considering switching to using the Mail application on Mac, which has excellent features for training it to recognize spam and not spam, but it seems awfully slow, and I'm not sure if it otherwise is suited for my large amount of mail. So I'm considering whether I should have something running on my server that filters the mail before it gets to me, and which I can train. I find the traditional tools, which use centralized sources of spam blacklists, totally useless. In part because I have some experience with the ways they are created. Often the over-zealous maintainers will block large IP ranges for questionable reasons, and much legitimate e-mail is lost. So, I'm looking for something I personally can train.

BBC News has an overview article about "Bayesian filters", which appears to be the most effective approach right now, able to recognize up to 99.9% of incoming spam, based on the filters you train it to have.

I'm particularly interested in crm114 which appears to be an open source package I could use on one of my servers. Not that I don't have anything else to do, but the spam problem is driving me crazy.


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13 comments

26 May 2003 @ 16:15 by Jon @216.113.202.62 : Trainable Filters
There's a tool that's been in development (and use by some clients) for a couple of years now, that operates on "context analysis" and is trainable absed on the rules a user gives.

I don't know if an inexpensive/free or open-source version is available.

Take a look at www.gavagai.net - it might interest you  



26 May 2003 @ 16:20 by Jon @216.113.202.62 : Spam Filters
Sorry, that last reference may not be overly appropriate (altho' perhaps interesting).

Here's another, specifically anti-spam reference:

http://www.activestate.com/Products/PureMessage/  



26 May 2003 @ 17:40 by ming : ActiveState
Thanks for the links. It doesn't look to me like it is open source, though. I'm looking for something that I can tinker with myself. Money is not the big issue, but it just tends to be so much easier to install open source software on a server, and it is more flexible.  


17 Jun 2003 @ 15:29 by Dave Galler @24.83.28.243 : Filters - Gavagai Technology
Gavagai Technology has recently changed it's name and web address. If you're still looking for them you can find them at http://www.axonwave.com.

Cheers.  



30 Jun 2004 @ 00:34 by bob @208.186.7.149 : PopFile does the trick
Hitting 99%+ accuracy sorting for mailing lists (57%), personal (13%), spam(30%) & commercial(  


30 Jun 2004 @ 09:53 by ming : Spam Filtering
Since then I've added SpamAssassin to my server, which seems to do a fine job of marking spam. And the latest Eudora has a Bayesian spam filter too. So I'm doing pretty well too.  


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