Starting Guide for Postfix Mail Server Configuration Supporting Anti Spam and Anti Virus
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About this ebook
- Method 1: With Postfix, SpamAssassin, ClamAV and Amavis-new
- Method 2: With Postfix, SpamAssassin, ClamAV and Procmail
1. How Postfix receives mail:
2. How Postfix delivers mail
3. Starting guide for quick Postfix configuration
4. Postfix mail server and Dovecot configuration
5. Installing ClamAV and SpamAssassin
6. Installing and configuring Squirrelmail:
7. Method 1 to support Antivirus and Antispam: Using Postfix, Amavis-new, ClamAV, SpamAssassin
8. Method 2 to support Antivirus and Antispam: Using Postfix, Procmail, ClamAV, SpamAssassin
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Starting Guide for Postfix Mail Server Configuration Supporting Anti Spam and Anti Virus - Dr. Hidaia Mahmood Alassouli
Hidaia_alassouli@hotmail.com
1. Introduction:
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
1. How Postfix receives mail:
2. How Postfix delivers mail
3. Starting guide for quick Postfix configuration
4. Postfix mail server and Dovecot configuration
5. Installing ClamAV and SpamAssassin
6. Installing and configuring Squirrelmail:
7. Method 1 to support Antivirus and Antispam: Using Postfix, Amavis-new, ClamAV, SpamAssassin
8. Method 2 to support Antivirus and Antispam: Using Postfix, Procmail, ClamAV, SpamAssassin
2. How Postfix receives mail:
When a message enters the Postfix mail system, the first stop on the inside is the incoming queue. The figure below shows the main processes that are involved with new mail. Names followed by a number are Postfix commands or server programs, while unnumbered names inside shaded areas represent Postfix queues.
Network mail enters Postfix via the smtpd(8) or qmqpd(8) servers. These servers remove the SMTP or QMQP protocol encapsulation, enforce some sanity checks to protect Postfix, and give the sender, recipients and message content to the cleanup(8) server. The smtpd(8) server can be configured to block unwanted mail, as described in the SMTPD_ACCESS_README document.
Local submissions are received with the Postfix sendmail(1) compatibility command, and are queued in the maildrop queue by the privileged postdrop(1) command. This arrangement even works while the Postfix mail system is not running. The local pickup(8) server picks up local submissions, enforces some sanity checks to protect Postfix, and gives the sender,