Yo!
I'll be setting up a mailserver here soon - based on postfix (let's not
argue about that in this thread, please :-) and cyrus imapd (the latter
because AFAICT opengroupware.org requires it or at least runs best with
cyrus). I'm wondering how to set up my virus and spam defenses
- antispam: I know spamassassin works, and our mail volume is small enough,
so the CPU load is not an issue. Where do I tie it in? One installation I
did used a wrapper script for cyrdeliver to call it - mainly because I
really like per-user customability. (I will use DNSBLs as a first line of
defense, too, but I'm quite up to speed there, so that's not the topic
here)
- antivirus:
- is clamav up to the task? (Additionally, all windows workstations have
Norton AV, too, and I'll be blocking .scr/.bat/.exe/... anyway, so it's
only a very few ZIP and DOC files that will be making it)
- what do I use to call clamav? amavisd(-new)? Call it from the
cyrdeliver wrapper? something else?
Any pitfalls anybody wants to caution me against?
(Oh, and: I'm toying with the idea of separating ingoing and outgoing mail
on two machines - is there anything to be said in favor or against?)
(And another topic - TLS: is there anything in favour of buying a
certificate for a mailserver? I've not seen any mailserver refusing mail on
a self-signed cert so far...)
thanks in advance & greets
-- vbi