On a test environment I have, I am in the process of moving my DNS and AD infrastructure from Server 2008 R2 to a core installation of '08 R2. As a first step, I set up the DNS infrastructure on the core installation and name resolution is working great.
I've created an unattended dcpromo file to control the promotion to a domain controller via notepad.
dcpromo seems to run fine, but for some reason other machines can't find the AD server via DNS post-promotion. For example, when I try to join the new domain on a Win7 machine, the DNS query, from the Win7 machine (which points to the core machine as it' DNS server), isn't find the SRV record for the _ldap._tcp.dc._msdcs.<domain>.
On the server, the c:\windows\system32\config\netlogon.dns file contains the above entry with the correct FQDN of the server.
nslookup on the core machine isn't resolving the srv record either.
Thanks in advance.