There is a new UT, Unreal, Unreal 2, Server admin mailing list available for developers and server admins to use freely. It was done as homage to Epic's Original list as well as to provide admin to admin support for new and old admins. This is a re-newed tool for the community so please use it to your advantage. It is moderated, so keep it civil.
Also, if your a developer of a TC mod that is big as far as userbase, ie quite a few servers being ran, then contact me and we can see what we can do as far as setting up a tc_mod admin list for your TC_mod.