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Help Tuning Postfix on 10.4

Subject: Help Tuning Postfix on 10.4
From: Xavier Destombes <email@hidden>
Date: Fri, 23 Nov 2007 19:13:35 -0600
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Hi,

Even if I found a message stated it's not a good idea to send a mail to many (1000+) recipients resulting in really poor performance (and I agree because I already experienced such performance issue), is there a way to tune Postfix to allow my client to do a mass-mailing with about 2000 recipients? Actually if my client does that, it gets more than 24hours to empty the mail queue and many other server services get slow or even unresponsive...

I'm trying to understand where are the main pitfalls. It seems spam/ virus scanning is the most consuming part. I know I shouldn't white-list my client domain as it could easily be used from "fake" emails, and if I remember correctly it's even not really sure amavisd/spamassassin will respect that and won't scan the messages.

Could someone with a heavy Postfix usage could tell me what he has done to tune the mail server?

Thanks

Xavier

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