Re: Reverse Lookups fail

Theodore Watson <tpw25@drexel.edu> wrote:

> My domain's reverse lookups are succeeding when making queries directly
> to the DNS server, although from anywhere else in the world, they are
> failing. For example:
>
> bash-2.05b$ /usr/sbin/nslookup 206.135.58.110 dns1.mindbridge.com
> Server: dns1.mindbridge.com
> Address: 206.135.58.120
>
> Name: mail2.mindbridge.com
> Address: 206.135.58.110
>
> bash-2.05b$ /usr/sbin/nslookup 206.135.58.110
> Server: noc.irt.drexel.edu
> Address: 144.118.24.20
>
> *** noc.irt.drexel.edu can't find 206.135.58.110: Non-existent host/domain
> bash-2.05b$


The delegation to you from your parent zone is classless

96-27.58.135.206.in-addr.arpa. 14400 IN NS dns1.mindbridge.com.
96-27.58.135.206.in-addr.arpa. 14400 IN NS dns2.mindbridge.com.

In your named.conf, you need

zone "96-27.58.135.206.in-addr.arpa" { ... };

--
Ronan Flood <R.Flood@noc.ulcc.ac.uk>
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)