Linux Mail Server Setup and Howto Guide

This article describes how to use MailScanner to add a disclaimer message to outgoing mails in Postfix. Make sure MailScanner is integrated into Postfix and tested to be working.

Starting with version 4.61.7-2 of MailScanner, MailScanner can now talk directly to the Clam AntiVirus clamd daemon. Previously, an executable program called clamscan, specified by setting Virus Scanners = clamav in the MailScanner configuration file, was launched to perform virus scanning. This process required so much overhead to perform.

This page will guide you in configuring MailScanner, ClamAV and SpamAssassin to work in Postfix. Before proceeding, please make sure that all of the above components are already installed.

MailScanner is an open source anti-virus and anti-spam filter for email servers. The anti-virus and anti-spam portion is delegated to third party applications. This article describes how to install MailScanner.

For more efficient virus scanning in MailScanner, we can use the Perl ClamAV Module. To do this, we need to install the required Perl modules. Here are the steps to do this.

1. In the Terminal window, type in the commands below.

perl -MCPAN -e shell

This will activate the interactive mode for locating, download and building perl modules from CPAN sites. CPAN stands for Comprehensive Perl Archive Network. CPAN sites contains a large collection of Perl softwares and documentations.

This article will guide you in configuring MailScanner, ClamAV and SpamAssassin to work in Postfix. Before proceeding, please make sure that all of the above components are already installed.

To install MailScanner, we are going to download the latest source code from the MailScanner web site and build it. For this to work, it needs the Development Tools package. If you did not include this during installation, you must add it now. Learn how to add or remove applications here.