BAYES Training

[dennis_81]

Hello all,

we see in our PMG that more and more explicit spam mails are delivered to the recipients.
Checking the logs, I see that these are getting a score of (-1.9) through BAYES_00.

If I understand this correctly, BAYES should learn which mails are wanted and which are not. But by which parameters does the PMG recognize that? Is there an automatic training?

Can I do anything to influence this and is it possible to reset the rating?

Thank you and best regards
Dennis

 

[Stoiko Ivanov]

If I understand this correctly, BAYES should learn which mails are wanted and which are not. But by which parameters does the PMG recognize that? Is there an automatic training?

bayes learning in PMG is using Spamassassin's autolearning feature - see https://cwiki.apache.org/confluence/display/SPAMASSASSIN/BayesFaq (and linked pages)

This can lead to (and quite often does) a wrong scoring over time

Can I do anything to influence this and is it possible to reset the rating?

yes - simply disable the feature in GUI->Configuration->Spam Detector

(you can reenable it afterwards and would start fresh)
I would suggest that you try how the performance is with bayes turned off - most users are quite happy with the detection rates without it

I hope this helps!

 

[pmbaeum]

Sorry for re-aliving this topic - but same Problem here. Bayes is allowing clear spam mail every day - but without Bayes the Detection Rate goes down significantly.

Since you can train Bayes - is there a way to create a spam-learning Mailbox that user can forward their spam to?

 

[rick80]

we see this behaviour also on our mailcleaner instances. nicebayes lets obvious spam pass through, but deactivation results in even more spam.

a spam-learing mailbox would be a great idea like this
- fetch mails automatically from this mailbox
- sa-learn --spam /path/to/spam/folder