Additional Info: I am trying to create a mailserver for domain g8mcv.me.uk on server dawn2.systemcv.org.uk
by following the instructions at https://www.linuxbabe.com/mail-server/setup-basic-postfix-mail-sever-ubuntu
Currently, this mail domain is on a different server which is self-certificated
I have minimal knowledge of Apache or any web server and do not intend to use it other than to get the certicifcate to use with Postfix/Dovecot. So, I have no idea if it is set up correctly - I just followed the instructions given on the website above.
If I try accessing http://dawn2.systemcv.org.uk from an external device it displays the default Apache welcome page, so the connectivity appears to be OK.