We're currently running exactly the same on five boxes in a farm setup. Not counting the mail we reject at the sendmail level, we pass something on the order of 1M messages/day off to the back end mail servers.
Sounds like a pretty spiffy setup.
We've been very happy. Using FreeBSD's ports tree to keep current with with p5-Mail-SpamAssassin, p5-File-Scan, clamav, and the ports version of sendmail has made it very easy to stay current with little downtime and low maintenance overhead. Also, the defaults for clamav and SpamAssassin are adjusted slightly by the porter to be reasonable for a FreeBSD box in a more-than-low-volume environment.
Gotta love the ports tree. I have read that clamav works quite well with MIMEDefang and plan on using it with my setup.
I do recommend using the ports version of sendmail -- easier to upgrade when a sendmail vulnerability is announced, and very well maintained by the same core FreeBSD folks that integrate sendmail into the stock install. It's a little tricky to set up (the doc for the port tells you what to do) but it's hands-off after the initial setup.
I have considered upgrading sendmail via the ports tree, but i've been unable to 'successfully' do it correctly. :) Not sure what exactly im doing wrong, and most people i've talked to cringe when I mention it. Maybe we could discuss that process at another time. I'd at least like to try it.
Note that we're not yet on MIMEDefang 2.40 -- the ports tree hasn't absorbed it yet. Around the time that they update the port is around the time that I'm comfortable with most new things anyway, but YMMV.
I'll keep that in mind. :)
-royce
I appreciate the feedback.
Cheers,
Jason
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