Load your RPG-X, RPG-X2
Open your Console
and enter the following command
/sv_master3 "efmaster.kickchat.com"
once that is done, go to te normal screen to scan for servers.
Change from Internet 1 to
Internet 3This has worked on mine and several other peoples systems.
If this still doesn't work, you can connect manually by clicking on "specify server," and filling in
server.last-outpost.net (RPG-X) or
server.last-outpost.net:27961 (RPGXEF)