I would take a close look at your log files for the time periods in
question.... perhaps you have some spambot zombies or virus-remailers
inside your network or using your box off hours.
lsof and top and ntop will give you alot of useful info also during the
timeperiod in question.. see whats eating memory, why, etc in case its
not mail/spam/virus related (although it sounds like spambot runs to me
anecdotaly, esp if nothing had changed).
Jim
Lisa Casey wrote:
I think you've hit the crux of the matter here. You might remember that I
also mentioned that this box with it's Sendmail/Mimedefang has been working
fine up until weekend before last. That's when I started getting the error
messages in my log re mimedefang having no free slaves and when that
happened load averages shot up and Sendmail began refusing connections due
to the load average. When I brought mimedefang back up today, load averages
climbed back into the 30's within an hour and the box became sluggish almost
to the point of not being able to loog into it. It ran perfectly all weekend
(load averages consistently under 1.0) all weekend with no mimedefang (but
lots of customer complaints about increased spam!).
Figuring out WHY mimedefang is suddenly shooting up the load averages when
it worked so well for quite some time is what I ought to do to slove the
problem. Knowing why will tell what the cause is.
I'm at home now but tomorrow I'll look at cron jobs, etc. What else should I
take a look at? There's nothing that I can think of right off hand that I
have changed or added around that same time.
I got a quote on Canit today, unfortunately my company can't afford to go
that route just now :-( So Mimedefang/Spamasassin is going to have to be
it for me for now.
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