Reverse Lookups fail

[Ronan Flood]

Theodore Watson <tpw25 at 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 at 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)