QA:Testcase Postfix

Description

This test case tests if the Postfix is running and able to send emails.

Setup

1. Ensure that postfix package is installed.
2. Ensure that other MTAs like: sendmail and exim are not running.
3. Make Postfix the default MTA using: alternatives --config mta

How to test

1. Switch to root user: su -
2. Check if postfix service is running: systemctl status postfix.service
3. Install mail utility: yum install mailx
4. Try to send email to root user:

   # mail root@localhost
   Subject: test
   test
   EOT
   

5. Check if root has received the test email: mail

Expected Results

1. Postfix must be running and active at boot, the output of systemctl should be like:

   # systemctl status postfix.service
   postfix.service - LSB: start and stop postfix
   	  Loaded: loaded (/etc/rc.d/init.d/postfix)
   	  Active: active (running) since Sat, 02 Jul 2011 13:07:21 +0100; 10s ago
   	 Process: 3454 ExecStart=/etc/rc.d/init.d/postfix start (code=exited, status=0/SUCCESS)
   	Main PID: 3531 (master)
   	  CGroup: name=systemd:/system/postfix.service
   		  ├ 3531 /usr/libexec/postfix/master
   		  ├ 3533 pickup -l -t fifo -u
   		  └ 3534 qmgr -l -t fifo -u
   
   

2. root user should receive the test email and the output of mail should be like:

   # mail
   Heirloom Mail version 12.5 7/5/10.  Type ? for help.
   "/var/spool/mail/root": 1 message 1 new
   >N  1 root                  Sat Jul  2 12:46  20/766   "test"
   &