The online service is currently unavailable (Unreal Tournament 3)
I had to put a new exe in the binariesIn the amount of 15 years struggled with this problem. The first time GameSpy is not, therefore servers also ceased to exist (but then I didn't know about it). The second time, 8 years later, when a new computer and want to remember old times. Here again, decided to get into network - found the solution somewhere in an hour, the last breath so to speak.
The fact that the old GameSpy server is gone, and almost all versions of the game when you start turning to these servers.
I solved this problem. In the search engine typed in unreal tournament 3 multiplayer patch download, one of the links I downloaded the patch UT3 2.1 v (I have version 2.1), shifted with replacement in the folder Binaries the file UT3.exe file that should run the game (W:\Program Files (x86)R. G. Mechanics\Unreal Tournament 3\Binaries) and Hallelujah!!!
The site where I downloaded the patch: http://www.playground.ru/files/official_gamespy_patch_windows_servers_dlya_ut3-87513/
Another reasons that can cause problems with access to the network: https://coop-land.ru/helpguides/solutions/122-zakrytye-porty-ili-chto-delat-esli-igr-ne-vidnone-podklyuchaetsya.html