How to get Postfix to run on 18.04.

Ubuntu 18.04.1 droplet trying to get Postfix to work. Cannot get past the message active (exited) from the postfix status command. Any ideas would be MUCH APPRECIATED. I have spent days researching and my final brick wall is this Debian bug report:

Message #121 received at (full text, mbox, reply):

From: Scott Kitterman To: Subject: Re: Problem still persists in 9.3 – me too Date: Fri, 23 Feb 2018 18:11:02 -0500 I’ve just uploaded an update that changes how the instance generator works.
It seems to help for some people, but not everyone. It should be in 9.4, so after Debian 9.4 is out, more reports of this problem, with details, would be useful.

Scott K

Has anyone found a way to apply this update to 18.04 or a workaround ?? PLEASE Thank you in anticipation, ianm

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Hey friend!

The “active (exited)” status only means that systemd is not monitoring it, which seems to be more about the default systemd script than anything else. I can confirm on my production postfix boxes (running Ubuntu 18) that they all say the same, but they are all up and running without issue. I might suggest that if postfix is failing for you and you see that status, it indicates a problem with a custom configuration rather than the default state. Perhaps running “postfix check” will reveal an error in the configuration.