hardware sizing for a large mail installation?

John Madden jmadden at ivytech.edu
Mon Sep 27 10:54:46 EDT 2004

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?


John Madden
UNIX Systems Engineer
Ivy Tech State College
jmadden at ivytech.edu

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