I'm migrating one of my clients from Windows Server 2003 to 2008. However,
DNS recursive query and nslookup are failing on the new 2008 DC. Yes,
recursion is enabled (or rather not disabled on Advanced tab). I have the
same forwarders and root hints as my working 2003 DC and I can telnet to the
forwarders' port 53 from the 2008 DC. Event logs show no errors.
Odd thing is, when adding the forwarders, their FQDN resolved, but the
Validated column said "An unknown error occurred while validating the
server." Can't find anything about this message online and can't find any
event, log entry, or other explanation of what this error is. Guess that's
why it says "unknown error". ;)
Seems obvious problem is recursion/forwarding, but I can't figure out how to
diagnose the problem since recursion is already enabled. Help!
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