hardware sizing for a large mail installation?

From: John Madden (no email)
Date: Mon Sep 27 2004 - 10:54:46 EDT


Someone on the linuxmanagers list suggested I post my question here, so
here goes:

I'm looking for pointers (past experience in particular) for sizing a mail
server for a large-ish mail install based on postfix, cyrus, amavisd-new,
clamav, spamassassin, and web mail (most likely imp) serving around 100k
mailboxes. I estimate I'll need to be able to pass through the whole
chain around 40msgs/sec continuously to be on the safe side. If possible,
I'd like to do this on a single server. Cyrus murder probably isn't an
option, but I think I could swing a separate box to do the content
filtering. Would, say, a 4-cpu Xeon with ~8GB RAM suffice for the
MTA/IMAP combination?

Thanks,
  John

-- 
John Madden
UNIX Systems Engineer
Ivy Tech State College
---
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