Question 1: My server can be found here:
https://www.mosehansen.dk/cgi-bin/dom2.pl
The server is under more or less permanent reconstruction. Currently, this means that you have to find a link on the page to a "new server", and use that. Also, your browser will complain about the certificate. Ignore this for now, I will fix it some day.
To participate in a game, use the IP address dom2.mosehansen.dk, and the port listed for the game in question.
There is a looong thread about this server under the title "New and raw something something"