Change primary hostname?

CaptainPalapa

Checked docs and forum, nothing specific to this (at least not with my search terms).

Is there a proper set of steps if one needs to change the primary hostname? I created, for example: “MyTestServer.com”, bought the domain name, etc. My intent was to use this as a test for new cloud instances, with it’s own DNS, etc. while I migrated each of my other domains over.

This worked great. Now it’s time to drop MyTestServer.com. I don’t want to be stuck renewing it each year.

Is there a correct process for dropping the primary domain name from the mailcow config and promoting one of the other domains? (I assume at least one domain name has to be the king.)

esackbauer

https://community.mailcow.email/d/727-adminui-blank-page-after-change-hostname

CaptainPalapa

esackbauer

I did find and read that posting, but wondered if there were specific steps beyond a “fail and fix” post.

I’ll give it a try and see how it goes. I’ll take a backup right before in case it hoses it. (I’ve seen a few posts about update.sh issues, can’t recall what they were.)

esackbauer

It is not an official solution, so your mileage may vary. But I do not see big troubles, just force Lets Encrypt to get the certificates for the new domain. But make sure your DNS records are in place before.

CaptainPalapa

esackbauer Yep, yep. All DNS is good, just want to drop the one domain that I don’t need long term.

Thanks!

CaptainPalapa

esackbauer This worked perfectly. I changed the hostname= var in mailcow.conf, then restarted the docker stack. That didn’t change it, so I ran the ./update.sh script, then checked the admin and it was changed and there were no issues.