NS lookup returns unknown but with correct IP

You need to open DNS server in administrative tools

Solution 1

Open up Reverse lookup zones, if no entries action; add new zone, accept default settings and then add first three octets of dns for example 192.168.1 skipping last one

should add 192.168.1.in.arpa

Go to Forward lookup zone open up Domain.local, right click for properties, tick update associated pointer (PTR) record.

Good video at https://www.youtube.com/watch?v=l4EkW1kcC0A

Solution 2

If there is an entry then in DNS manager select the server as in SERVER01 on the lefthand side after the domain-DC.

Right click,

All tasks>Clear Cache

All Tasks> Stop

All tasks> Restart

Then check the NSlookup again.