Hi,
I have never had to rebuild my Bayes database because of poisoning.
In my opinion the secret is to turn off auto-learning to start with and
to train manually, until you are happy with the accuracy of the Bayes
system.
Once you have a well trained Bayes database you can switch on
auto-learning, but change the default threshholds. These are what I
have mine set to:
bayes_auto_learn_threshold_nonspam -0.1
bayes_auto_learn_threshold_spam 12.0
This makes sure that the auto-learning system doesn't work on any emails
that might be considered in the grey area.
I also manually learn by mistake. All FNs & FPs are fed back to the
system. And I occasionally feed some recent ham as ham.
This has worked really well for me over a number of years.
Jack Gostl wrote:
It sounds like you are in fact suggesting a periodic rebuild of the
Bayes files.
----- Original Message ----- From: "--[ UxBoD ]--" <[EMAIL PROTECTED]>
To: <users@spamassassin.apache.org>
Sent: Friday, January 26, 2007 6:45 AM
Subject: Re: Bayes
IMHO I would imagine that recently, due to the SPAM changes, that your
Bayes has become poisoned. But I could be well wrong.
On Fri, 26 Jan 2007 06:09:24 -0500
"Jack Gostl" <[EMAIL PROTECTED]> wrote:
The amount of spam getting through my filters has been steadily
increasing. From a start of under two percent up to over ten percent.
It was getting pretty bad, so I finally, just on a hunch, I wiped my
Bayes files and rebuilt them. And, voila!, I'm now running under one
percent.
Has anyone else seen this? Are there any suggestions as to how to
deal with this? Should I regularly rebuild the bayes files?
Appreciate any advice.
Jack
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