As taken from the Unreal Fortress official website:
The closure of game.net (formally barrysworld) means that there are now no online servers and no ftp space for Unreal Fortress.
Given that the community is now tiny and my time and resources are extremely limited, with a sad heart I am officially announcing the termination of development on Unreal Fortress.
It has been a great ride and I want to thank everyone that was a member of either the community or the dev team. I have met so many wonderful people and it has truly been a pleasure.
I will keep the website up until the domain expires and wish everyone the best with their future exploits.
Nathan "Azm0" Fletcher.
The forum thread topic can be viewed here.
This news is a bit old, but it is still sad to see a mod die, espicially a complete and fun to play one.