Windows Domain Scan failed - Host resolved without domain

Hello SD+ Support Team,

I�m testing the 30 day trail version of service desk + 5.5.0.7 on Windows XP SP2. Firewall is down. DNS lookup works fine. Ping from server to host and the other way round works also.

Windows Domain Scan in our local network returns the expected results. We have to support the networks of our customers which are connected via VPN. I have added a new Domain with following informations:

Domain Name: clientxy (NetBIOS domain name)
Public Domain: yes
Domain Controller: dc-server.clientdomain.local (DNS name)
Username: Administrator
Kennwort: admispassword

When I run a Domain Scan I see the AD-strukture and can choose OUs to scan. Also the containing workstations are recongized correctly but all attemps to scan failed with: "No response received from workstation. Probably the workstation might be switched off or does not exist."

I took a look into the serverout logfile and found this:

[20:30:51:769]|[01-20-2007]|[com.adventnet.servicedesk.asset.discovery.IpUtil]|[INFO]|[24]|: Java PING Result for the workstation : WST-06-001. Result of ping : false.

Sure the ping fails... The domain is missing! Ping will only return if hostname wst-06-001.clientdomain.local is pinged.

Bug or "feature"? What�s going wrong?

Thanks

Dennis