[arch-general] mailman

Hey guys...I'm trying to setup a mailing list on the new arch server I got, but I've been having a lot of trouble. Finally, I got to here: http://lists.twilightlair.net/mailman/listinfo/arch-games but I don't think it's able to send/receive mails, and I really don't know how to proceed. Has anyone here setup mailing lists before give us a bit of a hand?