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03.24.2008 at 06:30AM PDT, ID: 23263932
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9.3

How to speed up spam processing with SpamAssassin/Postfix/amavisd-new?

Asked by CCTV17 in Spam Assassin, Anti-Spam Email Software

Tags: ,

We have a Fedora Core 4 box that scans incoming external email for spam via Postfix 2.2.2, amavisd-new 2.4.2, and SpamAssassin 3.1.8.  Everything works very well, but it processes messages very slowly.  We're a low-traffic site, so most of the time this is fine.  But we got hammered with a deluge of spam last week (~10,000 messages) and it took all weekend to flush it out.  During that time, all legitimate incoming mail was delayed.

I'd like to take steps to minimize the impact of this if this happens again.  It's taking several seconds per message, yet there is ample CPU and memory free.  So I'm guessing the delay is network-related, perhaps DNS lookups or connection timeouts of some sort.  Does anyone have suggestions of how to speed up the scanning without significantly reducing its accuracy?

Thanks!
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About this solution

Zones: Spam Assassin, Anti-Spam Email Software
Tags: Postfix, amavisd-new, SpamAssassin, Postfix 2.2.2, amavisd-new 2.4.2, SpamAssassin 3.1.8
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Solution Provided By: grblades
Participating Experts: 1
Solution Grade: A
 
 
 
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