If you're setting up a new server on the Fediverse, it's usually best to use a fresh domain or subdomain that has never been used by any previous Fedi servers.

If a new server recycles the subdomain or domain from a defunct server, it may sometimes cause technical problems when trying to connect to other Fediverse servers.

More info about this and how to avoid problems at:

➡️ https://fedi.tips/can-i-re-use-an-old-subdomain-or-domain-when-installing-a-brand-new-fediverse-server

You can also create a new subdomain on an existing domain to avoid problems.

#FediAdmin

Can I re-use an old subdomain or domain when installing a brand new Fediverse server? | Fedi.Tips – An Unofficial Guide to Mastodon and the Fediverse

An unofficial guide to using Mastodon and the Fediverse