How to Configure Postfix

Step-by-Step Guide

1. 1

   Step 1: Diagram your domain and your needs.

   How many users are you supporting? Will you have a lot of aliases? Many of these types of questions will affect how Postfix is configured.
2. 2

   Step 2: Plan for growth.

   If you plan on supporting multiple domains, consider using virtual aliases. , There are three different modes:
   MTA, Forward, Relay.
   
   While they are similar, they operate differently.
   
   MTA, or Mail Transport Agent, operates as a normal server, receiving mail on behalf of all users on the computer.
   
   Forward is used when addresses to your server will just forward to another address.
   
   For example, if you want all mail to your server to forward to your Gmail account, you would setup Postfix to forward your mail.
   
   Relay is used as a relay, only accepting mail to be relayed elsewhere.
   
   Most ISPs set up their mail servers this way. , You can review all of Postfix's settings on its official web site. , This is usually needed by end-users who's ISPs block the standard SMTP port 25 ,
3. 3

   Step 3: Decide how you want Postfix to operate.

4. 4

   Step 4: Modify the main.cf file within /etc/postfix.

5. 5

   Step 5: If you need postfix to be able to receive mail on a non-standard port

6. 6

   Step 6: you must edit master.cf.

7. 7

   Step 7: Save the configuration file and start postfix.

Detailed Guide

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