Re: [OT] Tom's/Marc's spam filters?

Bruce Momjian <pgman@candle.pha.pa.us>

From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Joe Conway <mail@joeconway.com>
Cc: Michael Chaney <mdchaney@michaelchaney.com>, pgsql-general@postgresql.org
Date: 2004-04-21T18:45:48Z
Lists: pgsql-general
Joe Conway wrote:
> I get a comparible amount of spam (~600 to 1000 per day) and my setup 
> *was* about 98% effective until a month or so ago. These days it is more 
> like 80%. I've noticed many of the spam getting through appears 
> specifically targeted at getting by SA -- no HTML, a paragraph of 
> nonsense (or sometimes out of some public domain book), and a one liner 
> trying to sell me a mortgage or something.
> 
> The one thing I had *not* been doing, but started to do as of last 
> night, is to use the false-negatives to explicitly train the Bayesian 
> filter.  It was easy enough to set up. I created an hourly cron job as 
> follows:
> 
>    /usr/bin/sa-learn --mbox --spam /path/to/false-neg.mbox
> 
> Now I just drop all false negatives into that mailbox, and clean them 
> out periodically. Hopefully that will make a significant improvement.

I can tell you it certainly will.

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