Windows 2003 external nslookup times out, internal works



We have three Windows 2003 domain controllers, all running DNS for our entire
network. One of these servers cannot successfully preform NSLOOKUP on
external sites, but it works for internal sites. Even setting the server to
another external public DNS server fails. I see the DNS queries going through
my firewall to all the root hint servers, but nothing ever resolves. I have
two more servers where this works just fine. All three servers are setup
identical.

Has anyone seen this before?
.



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