RHEL 6 Configure a Mail Transfer Agent (MTA) to Accept Inbound Email From Other Systems

Installation

Configuration

Start

Firewall

Add TCP port 25 for SMTP.

Then restart firewall, to let new configuration take effect.

Test

First create a test user on server.

Then on remote client, we use telnet to send mail. For details see http://magnus-k-karlsson.blogspot.se/2014/06/how-to-send-mail-from-command-line-with.html.Here follows a summary.

Now check mail on server.

Reference

• man 5 postconf