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Enterprise-Wide Spam and Virus protection

By deploying amavisd-new on your central mail gateway you can efficiently protect all the users behind the gateway from spam (UBE/UCE) and viruses.

We installed amavisd-new for the Charité.

Let the pictures speak for themselves -- these were made using the excellent Mailgraph by David Schweikert

amavisd-new is configured to use Clamd, a daemonized scanner, Kaspersky aveserver (also daemonized) and SpamAssassin 3.x
We merely "tag" the spam instead of rejecting or quarantining it. This way each user can filter his/her mail individually.

Architecture

• Linux, 2.6.19.2
• Dual Intel(R) Xeon(TM) CPU 2.80GHz
• 3 GB RAM
• Spool, logs, virusscanning and system distributed over multiple disks for lower latencies
• Postfix as MTA
• amavisd-new
• spamassassin
• FuzzyOCR
• Clamd
• aveserver

Performance

On a normal day, this machine easily handles 40.000 Mails (with 88.000 rejections) with a peak load of 2.0.

© by Ralf Hildebrandt This document contains links to external information sources that I do neither monitor nor control. I explicitly disclaim any liabilities in respect to external references. You are getting this document without any guarantees. Any methods shown above are meant as demonstration and may be wrong in some place. You may damage your system if you try to follow my hints and instructions. You do this at your own risk!

This file was last modified 18. Feb 2008 by root