If you are creating your own server on here, don't use a domain name with the word "mastodon".
The word "mastodon" in relation to social networks is a registered trademark owned by Eugen Rochko's Mastodon gGmbH organisation.
If you use a domain name which includes the word "mastodon", you can be sued by Eugen's organisation if you don't comply with their terms:
https://joinmastodon.org/trademark
For example, this would potentially make it illegal to switch to software unapproved by Mastodon gGmbH.
@homegrown A subdomain is OK to run mastodon?