Your best bet is to move on and find another MUD. Any atempts to gain entry via subterfuge might be seen as hacking attempts by the admins of that server, and that's a legal can of worms you don't want to open.
If the admins won't unblock your domain, then just cut your losses and move on. That's the best advice anyone can give you.
I am tryingto access a java based MUD from a workstation that accesses the internet via a server. The MUD says that my doamin has been blocked beucase someone (not me) has been causing problems. I contacted admin and they do not want to remove the block. Is there any way around this, perhaps I can "mask" my domain?