DNS query returns root servers


B

BigHaig

Running any DNS query against ns.nease.net returns all the root servers.
Why is this? I am trying to troubleshoot why clients from China cannot
email us in the US. Please explain if this is a DNS issue on their end.
Please see example below, it does this for all record types, not just MX.

Thanks.
set type=mx
unc.edu
Server: ns.nease.net
Address: 202.106.185.75

(root) nameserver = H.ROOT-SERVERS.NET
(root) nameserver = I.ROOT-SERVERS.NET
(root) nameserver = J.ROOT-SERVERS.NET
(root) nameserver = K.ROOT-SERVERS.NET
(root) nameserver = A.ROOT-SERVERS.NET
(root) nameserver = B.ROOT-SERVERS.NET
(root) nameserver = C.ROOT-SERVERS.NET
(root) nameserver = D.ROOT-SERVERS.NET
(root) nameserver = E.ROOT-SERVERS.NET
(root) nameserver = F.ROOT-SERVERS.NET
(root) nameserver = G.ROOT-SERVERS.NET
 
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O

ObiWan

Running any DNS query against ns.nease.net returns all the root servers.
Why is this? I am trying to troubleshoot why clients from China cannot
email us in the US. Please explain if this is a DNS issue on their end.
Please see example below, it does this for all record types, not just MX.

The ns.nease.net DNS probably isn't a recursive one
so it won't answer to queries about domains it isn't
authoritative for; in that case the server just returns
a "GLUE" answer pointing the client to the root servers
on the other hands a query like e.g.

nslookup -type=MX nease.net 202.106.185.75

will be correctly answered since the server is authoritative
for the "nease.net" domain; to solve your issue, you should
setup the clients to use a different (and recursive) DNS

Regards

--

* ObiWan

Microsoft MVP: Windows Server - Networking
http://www.microsoft.com/communities/MVP/MVP.mspx
http://mvp.support.microsoft.com

DNS "fail-safe" for Windows clients.
http://ntcanuck.com

408+ XP/2000 tweaks and tips
http://ntcanuck.com/tq/Tip_Quarry.htm
 

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