Issue Description
VCN3000/IVS C02, can't login by windows domain user.
The following "the domain server is not configured" error is prompted.

In the SMU debug log, there's following info:
2014-12-26 10:10.019+08:00[Warning|TID:0x7FB42E579710|RtnCode:0x003E] user_mgr.cpp:00589 GetAllLinkIDByUserNameAndDomainName User with UserName[rajendra] DomainName[AD] not found.

In the SMU debug log, there's following info:
2014-12-26 10:10.019+08:00[Warning|TID:0x7FB42E579710|RtnCode:0x003E] user_mgr.cpp:00589 GetAllLinkIDByUserNameAndDomainName User with UserName[rajendra] DomainName[AD] not found.
1. Check the OMU portal > Maintenance > Unified Configuration > SMU > System property > DNSConfig field. It's sure the windows domain info is configured and the format is right: "172.16.0.19 ad.stepsys.org"
2. comparing the log info, it's found the IVS server only check the domail nmae "ad" and does not care about the postfix. Change the DNSConfig filed to be "172.16.0.19 ad". Then the problem is fixed.
2. comparing the log info, it's found the IVS server only check the domail nmae "ad" and does not care about the postfix. Change the DNSConfig filed to be "172.16.0.19 ad". Then the problem is fixed.
