We had a major Edir re-org over the weekend and moved the two servers
(NW6.5sp7) running named.nlm/DNS to a different OU. Both servers appear to
be running fine, but one of the DNS servers will not forward external
queries (Internal queries work fine). I've verified the queries using

I've deleted the DNS server using the DNS/DHCP management utility and
re-created it, but the server will not forward external queries. I've
enabled logging at the internal firewall and found that the server is not
forwarding the DNS requests.

What else can we look at to find the answer?