I would like to use mailcow for an internal-only use server, i.e. each account can only send messages to others in the same domain and that’s it. The hostname of the server is based on a real domain that I own and it will be exposed to the internet somewhat in order so that people can access the server outside of the local network. I have an existing similar setup powered by a very old email server running ClearOS.
Does anyone have any suggestions/recommendations/tips on doing this with mailcow? Thanks in advance!