You can see this error when You run nslookup:

C:\ >nslookup
*** Can’t find server name for address 10.10.10.5: Non-existent domain
Default Server: UnKnown
Address: 10.10.10.5

How to resolve this error? You must simple configure Reverse Lookup Zones and PTR record in DNS.
Click – > Start -> Administrative Tools – > DNS
Click right button -> Reverse Lookup Zones -> New Zone ?

Next create New Pointer (PTR) record for dns server.