From Fedora Project Wiki


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


  1. Ensure that Package-x-generic-16.pngpostfix package is installed.
  2. Ensure that other MTAs like: Package-x-generic-16.pngsendmail and Package-x-generic-16.pngexim 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:
    Ending the Message
    EOT is inserted into the terminal after ending the message with ctrl+D
    # mail root@localhost
    Subject: test
  5. Check if root has received the test email: mail
  6. 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"