Hello All,
spamassassin is DOS'ing a couple of our servers. I think that if it didn't
scan everything sent to non-existent users we would be much better off but
there are a few complications:
1. We use vpopmail to serve virtual domains.
2. We accept mail for a company that is completely off our network. This is
a reciprocal arrangement ... we are a 20 level MX host for their domains
and they are a 20 level MX host for ours.
I would love to reject mail to non-existent users at the SMTP transaction
point but I think that the qmail patch that does that would also reject
mail to our 20 MX friends.
Thinking about this leads me to think thusly:
Skip scanning entirely based on the error code from
/home/vpopmail/bin/vuserinfo ${user}
Which returns 0 if user exists and 255 if not.
Not being a perl or qmail-scanner expert, is this approach valid? Seems that
doing this would pass it on th the next qmail stages: a bounce
(unfortunately) for non-existent users and queueing for our 20 level MX
domains.
Has someone already done this? Am I barking up the wrong tree? Should I try
to find a more efficient (i.e. not perl) spam scanner? Any and all
suggestions gratefully accepted.
Thanks in advance,
-Tom
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