Sallos, a well known client for playing Ultima Online is offline and the developer has abandoned the project. The Developer has given the "OK" to work on the client without him.
From what I can tell Sallos connects to an external server (proxy?) that would then connect you to the game server. That externals proxy server is shut down.
There are two ways I would imagine this work can be completed.
1) We figure out how to re-create this proxy server and point the Sallos client at the new server. I can host it.
2) We disassemble Sallos and remove the game client and re-assemble without the need for connecting to proxy. (preferred)
Note: previous versions of Sallos (PlayUO, Krrios Client) did not need to connect to Proxy to be played. I can provide both Sallos client and a previous PlayUO client for comparison.