Well... I'm convinced. I turned off autolearn a week ago, and things have
never been smoother. Its a shame really, that's a nice feature, but for some
reason it waters down the Bayes resolution until its almost useless.
----- Original Message -----
From: "Jack Gostl" <[EMAIL PROTECTED]>
To: "Anthony Peacock" <[EMAIL PROTECTED]>; "SpamAssassin"
<users@spamassassin.apache.org>
Sent: Monday, February 05, 2007 7:06 AM
Subject: Re: Bayes resolution gettin weaker
----- Original Message -----
From: "Anthony Peacock" <[EMAIL PROTECTED]>
To: "SpamAssassin" <users@spamassassin.apache.org>
Sent: Monday, February 05, 2007 3:56 AM
Subject: Re: Bayes resolution gettin weaker
Hi,
Jack Gostl wrote:
I've been watching this for awhile, and there is now a pattern to what
I'm seeing.
I'm running a configuration with multiple users sharing a bayes files.
This is an interim move to facilitate the spamassassin upgrades, and
like many interim moves its been going on for a long time.
When I first build the bayes files from my personal folders and my
spam archives, things were great. 99.8% of the spam caught or better.
Then, usually after a week or so, the number starts to drop. Right
now, its down to 97%, in another day or two it will be down below 95%.
With the amount of spam we receive, that is a lot of missed junk mail.
So I blow away my bayes* files, rebuild, and I'm back up to darn near
100% caught. For about a week. Then the deterioration begins again.
Has anyone else encountered this? Is this an artifact of too many
users sharing a spam file?
Also.... I retrain each night, feeding any missed spams plus any new
hams received back through sa-learn. I can't see how that makes it
worse, but who knows.
Do you have autolearn enabled?
Uh... yes? You are suggesting that I turn it off? I had always assumed
that if the Bayes learned something as ham that it shouldn't, sa-learn
was smart enough to undo it.
Change the thresholds for auto learning. Mine are:
bayes_auto_learn_threshold_nonspam -0.1
bayes_auto_learn_threshold_spam 12.0
I'm willing to try. I made the change in my user_prefs and we'll see what
the next week brings.
Thanks
