Hi,
I have a qmailrocks-style installation, patched qmail with
validrcptto + Spamassassin + ClamAV + qmail-scanner2.05st etc.
running under daemontools on a FreeBSD 7.0 box.
Problem: a good number of emails, close to half at times, are making
it through without matching ANY SpamAssassin rules--and so getting a
clean score or 0.0 from SA--even when I have set up dumb custom rules
to match easily ('test for the presence of the letter e'). I have
also trained several thousand spams and hams in the Bayesian classifier.
I am seeing this inconsistency all across the board: HTML and text
messages, long and short, forged addresses vs. real ones, etc. It
looks like something related to a timeout or resource limit, but our
mail server isn't under particularly heavy load (averages around
0.1), lots of free disk space and 4 GB RAM. We only get maybe a
couple of thousand emails a day for a single domain.
I have been beating my head against a wall trying to figure this out
for days and I am at a loss. Here are some things I have tried:
reinstalling qmail, SpamAssassin, ClamAV
reinstalling qmail-scanner (I was running version 1.25st)
temporarily disabling most SpamAssassin plugins
upping QMS's sa_timeout to 45 or even 60
fiddling with SA trusted_networks (now set to 192.168.1. )
SPF
Any suggestions would be greatly appreciated. I don't see anything in
the logs that jumps out at me...
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