Configuration of Postfix Mail Server Supporting Anti Spam and Anti Virus

This work provides starting guide for simple Postfix mail server configuration. Then  I configured the Postfix mail server to support Anti-Spam and Anti-Virus, using two methods. - Method 1: With Postfix, SpamAssassin, ClamAV and Amavis-new - Method 2: With Postfix, SpamAssassin, ClamAV and Procmail  The report includes the following sections - How Postfix receives mail: - How Postfix delivers mail - Starting guide for quick Postfix configuration - Postfix mail server and Dovecot configuration - Installing ClamAV and SpamAssassin - Installing and configuring Squirrelmail: - Method 1 to support Antivirus and Antispam: Using Postfix, Amavis-new, ClamAV, SpamAssassin - Method 2 to support Antivirus and Antispam: Using Postfix, Procmail, ClamAV, SpamAssassin