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.
