Hi, I'm running 3CX build 5.0.3790.0 on a Windows server 2003 SBS. The server is multihomed with one external nic and one internal nic. The external nic has a external ip. When I'm trying to register with XeloQ I get the following message in my server log: 14:45:59.017 DeviceRecord:eviceRecord [CM305004]: Failed to find a transport to host 188.8.131.52 I tried to remove the stun server but it didn't work. The server log show's both IP's: 14:39:55.249 CallMgr:nAddIPs IP(s) added:[10.0.0.1,xxx.xxx.31.238] 14:39:45.921 CallMgr::findLocalIPs [CM501006]: Default Local IP address: [10.0.0.1, xxx.xxx.31.238] Can someone please help me? I'm stuck.. I'm planning to buy the Small business version when this works.