Linux Mail Server Setup and Howto Guide

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.

Here are the installation guides for the above components.

• How to install Postfix SMTP Server
• How to install Clam Anti-virus (ClamAV)
• How to install MailScanner

SpamAssassin is included in Red Hat Enterprise Linux 5 and CentOS 5 and it’s ready to go out of the box. Just add it using the Package Manager tool if you haven’t done so during installation.

Configuring MailScanner

1. Edit the file /etc/MailScanner/MailScanner.conf

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.

Getting MailScanner

1. Click the globe icon at the top near the System menu to launch the Firefox web browser.

 

If an error occurs, you probably did not install the Graphical Internet package. You can add it now using the Package Manager tool.

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 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.

Here are the installation guides for the above components.

• How to install Postfix SMTP Server
• How to install Clam Anti-virus (ClamAV)
• How to install MailScanner

SpamAssassin is included in CentOS 4 and ready to go out of the box. Just add it using the Package Management tool if you haven’t done so during CentOS installation. SpamAssassin is located in the Mail Server package.

Configuring MailScanner

1. Edit the file /etc/MailScanner/MailScanner.conf

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.

Getting MailScanner

1. Click the globe icon at the top near the Actions menu to launch the Firefox web browser.

 

If an error occurs, you probably did not install the Graphical Internet package. You can add it now using the Package Management tool.