Cannot query the MX record for cn.ibm.com

[Mr_Huang]

Thanks for the inputs,
I guess I have fixed my problem by enable edns in my MS DNS server.

* Search the Technet for "Modify EDNS0 configuration"
* Add those registry
* restart DNS server

On Jun 6, 3:32 am, Chris Buxton <cbux... at menandmice.com> wrote:
> It could be related to the fact that the initial response from the
> authoritative servers is truncated if edns0 is not used. MS DNS is
> able to handle edns0, but perhaps your firewall doesn't like it.
>
> $ dig cn.ibm.com mx +norec @ns.austin.ibm.com +ignore
> [...]
> ;; flags: qr aa tc; QUERY: 1, ANSWER: 15, AUTHORITY: 3, ADDITIONAL: 0
> [...]
> ;; MSG SIZE  rcvd: 508
>
> $ dig cn.ibm.com mx +norec @ns.austin.ibm.com +edns=0
> [...]
> ;; flags: qr aa; QUERY: 1, ANSWER: 15, AUTHORITY: 4, ADDITIONAL: 17
> [...]
> ;; MSG SIZE  rcvd: 799
>
> Chris Buxton
> Professional Services
> Men & Mice
>
> On Jun 4, 2008, at 12:27 AM, Mr_Huang wrote:
>
> > dear guru,
> > Why I cannot query the MX record for cn.ibm.com from my Windows DNS?
> > I can query the MX for au.ibm.com from my Windows server.
> > and I can query the MX for cn.ibm.com from another linux DNS.
> > Is there any different in the DNS implementation for Windows and
> > Linux?
> > any ideas would be appreciated.
> > thanks
> > huang