Microsoft DNS server internal hostname disclosure detection

Summary
Microsoft DNS server internal hostname disclosure detection Microsoft DNS server may disclose the internal hostname of the server in response to requests for the hardcoded zones 0.in-addr.arpa and 255.in-addr.arpa. On the following platforms, we recommend you resolve in the described manner: All default Microsoft DNS server configurations
Solution
http://support.microsoft.com/default.aspx?id=198410