Make sure you have allow UT for all ports in firewall
What is your master server list in UnrealTournament.ini ?
[UBrowserAll]
ListFactories[0]=UBrowser.UBrowserGSpyFact,MasterServerAddress=utmaster.epicgames.com,MasterServerTCPPort=28900,Region=0,GameName=ut
ListFactories[1]=UBrowser.UBrowserGSpyFact,MasterServerAddress=master0.gamespy.com,MasterServerTCPPort=28900,Region=0,GameName=ut
Go to
[UBrowserAll]
ListFactories[0]=UBrowser.UBrowserGSpyFact,MasterServerAddress=master.333networks.com,MasterServerTCPPort=28900,Region=0,GameName=ut
ListFactories[1]=UBrowser.UBrowserGSpyFact,MasterServerAddress=master.noccer.de,MasterServerTCPPort=28900,Region=0,GameName=ut
ListFactories[2]=UBrowser.UBrowserGSpyFact,MasterServerAddress=utmaster.epicgames.com,MasterServerTCPPort=28900,Region=0,GameName=ut
bFallbackFactories=False
[UBrowser.UBrowserMainClientWindow]
bKeepMasterServer=True
How many servers in this time
http://master.noccer.de/http://master.333networks.com/