my secondary ns won't answer external queries

Ronan Flood ronan at
Wed Oct 13 19:37:10 UTC 2004

Chip Mefford <cpm at> wrote:

> One can connect to port 53 with telnet, so it
> isn't a firewall issue, (I think), perhaps
> it is something else.

Telnet uses TCP and I can query your server over TCP, but not UDP.
You need to allow access to port 53 over UDP as well as TCP.

                      Ronan Flood <R.Flood at>
                        working for but not speaking for
             Network Services, University of London Computer Centre
     (which means: don't bother ULCC if I've said something you don't like)

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