In case the below error is seen:

C:\Users\tom>nslookup josh-vm01.nix.mds.xyz 10.5.0.1
Server:  UnKnown
Address:  10.5.0.1

*** No internal type for both IPv4 and IPv6 Addresses (A+AAAA) records available for josh-vm01.nix.mds.xyz

The fix for this is to enable Setup -> Networking -> Optional DNS Target

then fill in the target DNS server, in this case 192.168.0.100 for our internal DNS server.  Test again:

C:\Users\tom>nslookup josh-vm01.nix.mds.xyz 10.5.0.1
Server:  UnKnown
Address:  10.5.0.1

Non-authoritative answer:
Name:    josh-vm01.nix.mds.xyz
Address:  10.0.0.101
C:\Users\tom>

HTH,
Tom K