Getting default server Unknown after configuring DNS by nslookup

Question

I am new to windows server. I just installed DNS on windows 2012 server. Here is how it appeared after installing

Then i went to DNS manager. I created a new Forward Primary zone and reverse zone. Here is the screen shot

Then i created the record (A, MX, CNAME). Here are the screen shots of each

SOA:

Name Server:

A Record:

MX Record:

CNAME:

Reverse lookup Zone:

After all that when i do nslookup, then i get Default Server: Unknown. Why ? Why i am getting unknown server

Why i am getting unknown ?

Thanks

Answer 1

You did all correct, but you dont mentioned are you restart DNS service after that? After restart its working fine for me.

Answer 2

From the quick google research it seems to be a reverse PTR record issue. Try recreating the PTR record. Here is a NSLookup Unknown troubleshooting for a bit older version. This might work for Server 2012 as well.