Bayes Poisoning - How to combat ?

Kai Schaetzl maillists at CONACTIVE.COM
Thu Mar 17 10:31:25 GMT 2005

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Dhawal Doshy wrote on         Thu, 17 Mar 2005 09:58:58 +0530:

> since bayes 
> is no more as effective as it used to be.

Oh, it is. Nearly all of our spam gets "bayes_99ed". It's the single most 
effective rule. It depends on your bayes db. F.i. ours has tokens back 
more than 12 months. If you follow the sa-talk list you will also see that 
there are high doubts that "bayes poison" actually works. If your bayes db 
fails on many spams than this can have many causes f.i. you didn't learn 
enough to it recently, or the wrong stuff or you are losing tokens too 
quickly by expiry or your customers do get a lot of mail which contains 
tokens which are also in spam or ... "bayes poison" is just the least 
worse explanation.


Kai Schätzl, Berlin, Germany
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