Hi

If both servers are in the same lan and no FW configured between them you
must have something else between them, please recheck again your
configuration antivirus, any third party tool installed on the servers.

--
I hope that the information above s you
Good Luck

Jorge Silva
MCSA
Systems Administrator

"PeterR" <PeterR@discussions.microsoft.com> wrote in message
news:652F567B-0936-47FB-B26B-226B24A00F1D@microsoft.com...
> My W2K3 DNS responds to TCP queries, but not UDP. It appears that
> something
> in the O/S is filtering/blocking UDP/53 to the DNS server, but I have no
> idea
> what. I've determined this by turning on the DNS debug log - no query is
> received.
> Situation:
> - Standalone (workgroup) machine with IIS and a few other bits installed.
> No
> DHCP or WINS
> - Windows Firewall disabled
> - Will answer using nslookup on machine itself, but not from another
> machine
> in the same LAN segment - no firewall/router in between.
> - Public IP address
>
> I've searched everywhere for an answer but so far no clue. I've even
> changed
> to a 3rd-party DNS server, which exactly the same results.