epza.gov.tw. MX

Chris Thompson cet1 at cam.ac.uk
Mon Aug 8 20:50:52 UTC 2011

On Aug 8 2011, Mark K. Pettit wrote:

>My resolvers, running BIND 9.7.3P3, are having a difficult time resolving
>the MX record for the zone "epza.gov.tw.".
>Any idea why this might be happening?

The delegation for epza.gov.tw from the gov.tw zone specifies a single
nameserver dns.epza.gov.tw (with glue But the server there
thinks that the nameserver for the zone is called ns.epza.gov.tw, and
that dns.epza.gov.tw is a CNAME with target ns.epza.gov.tw.

Using CNAMEs like that doesn't work correctly. Making dns.epza.gov.tw
have a duplicate address record instead would work, but of course what
is really needed is to get the delegation in step with the zone itself.

Having more than one nameserver for the zone wouldn't be a bad idea,
either ...

Chris Thompson
Email: cet1 at cam.ac.uk

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