As you may have read already, I'll be moving Salem to a new server in the not-too-distant future. This should be mostly transparent (especially if you use the default client), but I did notice that I had used the name of this specific server (plymouth.seatribe.se) in some of the things that were made before the domain name salemthegame.com existed.
I have updated everything on the site not to rely on it anymore, but it's likely that it has also been used in custom clients, and I think some people use it to access the web pages as well (for some reason), and I can't update that for you.
Custom clients, therefore, should be updated to use the domain name "game.salemthegame.com" instead, which I will update to point to the new server when the transfer happens. And if you access the web pages via URLs such as http://forum.plymouth.seatribe.se/ you should stop doing that. :)