Exim, SpamAssassin and AV-advice needed
I have some real trouble with my mail server. It is running on a Pentium
PRO 180 MHz box with 96 MB RAM, and last night the whole thing almost
died. My analysis of the situation makes me think that I need to work a
lot more on my config.
Short version: Has anybody made a setup of Exim, SpamAssassin and some
anti-virus-software (amavis, clamav etc) that does the following:
- Messages to addresses such as postmaster, abuse, security etc are not
scanned at all but delivered immediately to the local user the alias
- Messages flagged as containing virus, is saved to a file and not
processed any further.
- Messages to spamtraps are not scanned by SpamAssassin, but passed off
to Razor and learning systems (this spamtraps gets viruses too,
- The rest of the e-mail is sent through SpamAssassin and delivered
thereafter as normal.
Long version: I did apparently get hit rather badly by a bunch of
e-mails with large virus-attachments last night at about 3am my time.
At the same time, some lists I administer on a server with an old
Mailman install got spammed hard, causes Mailman to send me notices.
Due to that Spamassassin was busy scanning those viruses, and my new
2.43 install didn't get Razor to work as expected, the notices from
Mailman bounced. The funny thing with this install (which isn't mine, I
can't fix it) is that it reacts to a bounce from an admin, with sending
the admin another message complaining about the bounce... Which
bounces, of course, so it sends another, and another... Half an hour
later, syslog indicates that my machine ran out of memory, and when I
came to work this morning, everything had pretty much stalled... It
took me half an hour to type shutdown -r now in a shell I had left....
Nevertheless, I really need Spamassassin working, becaue I'm used to
getting spammed hard. But obviously, I would rather have a virus
scanner take care of those large MS-virus-attachments, so SA won't have
to deal with those. I hope this could reduce the load somewhat in
situations like this. (Or would it?)
Much of the software needed has been backported to Woody by Aurelien
I have allready grabbed his SpamAssassin backport, and Clamav and Amavis
are both there, so it is easy enough to apt-get, but I do not feel
confident that they are easy to configure like I want... So, if anybody
has done something like this, I would be very happy if you could
firstname.lastname@example.org email@example.com firstname.lastname@example.org