add mail relay server via control panel?

  • I am not familiar with postfix and smarthost, but I think your configuration should be something like this:

    In your case the MASTER CF_PARAMETERS can be empty.

    What is logged in /var/log/mail.log after sending an email?

    1. echo "This is a test." | mail -s "My great test subject" -a "From: [email protected]" [email protected]
  • Seems not commenting the MASTER CF_PARAMETERS was the issue. I've commented them out and now it's working.

    Thank you very much for the help. :)