I am now hosting a UT3 Dedicated server. Please follow the instructions below to access it.

1: Open a command prompt and ping www.dlocs.com and record the IP address (pings will fail which is fine)

2: Launch UT3 directly from UT3.exe.
Example: D:\Steam\steamapps\common\Unreal Tournament 3\Binaries\UT3.exe

3: Login, choose Multiplayer then Join Game

4: At the bottom choose Join IP and enter the IP you recorded in step 1 and add :7777
Example: 123.45.67.89:7777

5: If you receive an error asking if you want to connect directly to the IP instead, choose OK.

6: Password to join is inferno

You should be in.