Testing your new Server 2008 DNS server and finding that the primary domain returns nothing but root server referrals? We did. Using nslookup requires an extra command if you are running this test on a client with a default domain name:
If you do not set this, the client appends its current domain to the search query. The response is that the server has not a clue what you are talking about and returns a root server referral (which, by the way, is the correct behaviour.)
It is noted that this is not the same behaviour for a Server 2003 DNS server.