Hi all,
We're running postfix right now on our mail server. Mail server always
has 97% CPU idle and we have 4 gb of RAM, to which most is usually free.
We deliver mail for about 5000 accounts, but our spam filtering is
currently outsourced to Postini. I don't know off the top of my head how
hammered postini gets for messages addressed to our domain names, but I'm
sure its a lot (we've been an ISP for 10 years).
I have amavisd-new running on this mail server with anti virus and spam
assassin. I'm afraid that when we turn postini off and switch our MX
records over, the machine will just get overloaded, even though its dual
xeon 3.4 ghz/4 GB RAM, etc....
I actually wasn't amazingly afraid until a coworker mentioned something.
How well should this setup handle OK? What about during a DOS attack?
Should I put amavisd-new on another machine? If I do that, that machine
might not be able to take the load anyway.....
Thanks in advance for any ideas,
Matt
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