The server should be up & running at :
game.dom3minions.com
26797
Before selecting the nation be sure to have the proper pretender you want to play (with password)
You can connect directly through the game via the "network" option in the menu. No need to bother with mail here.
Also be aware that there is no reminder about the incoming end of the turn like on llamas. There is also more delay to postpone a turn.
If you have any question about the use of the server you can have a look here:
http://www.dom3minions.com/
or post here.