OK, so now I have the SIP registered, but cannot get any devices to register with the domain (not even snomONE UC Client!). When I enter the Setup details of MCBMServer.MELLOR-1.local for the server and the domain with the extension user details then save, I get the following log report:
2013/05/03 12:10:22 Start
2013/05/03 12:10:22 PnP: Starting to download files
2013/05/03 12:10:42 Webclient request Timeout: MCBMServer.MELLOR-1.local /prov/snom-m9-000413000000.xml
2013/05/03 12:10:42 PnP: Received from MCBMServer.MELLOR-1.local code 408
2013/05/03 12:10:42 Downloading http://MCBMServer.MELLOR-1.local/prov/snom-m9-000413000000.xml failed with code 408
Also, as can be seen in the log report, the server details are changed from MCBMServer.MELLOR-1.local to http://MCBMServer.MELLOR-1.local/prov/snom-m9-000413000000.xml.
What am I missing in the domain or extensino setup?