Help with internal address

[Mark.Andrews at nominum.com]

> Mark.Andrews at nominum.com wrote:
> 
> > > Mark.Andrews at nominum.com wrote:
> > >
> > > > > sysquery: findns error (NXDOMAIN) on nt01.wejit.com?
> > > > >
> > > > > Any way to eliminate that?
> > > > >
> > > > >
> > > > >
> > > >         You has a NS which refers to this name.  Use 'ndc dumpdb'
> > > >         to dump the cache contents to file.  Seach this file to
> > > >         find the NS record in question then remove the NS records
> > > >         from the appropriate zone.
> > > >
> > >
> > > I don't find an NS record with that name in the dumpdb file.  I DO have a
> n
> > > MX record on it - that's how I get the mail to nt01.  From the dumbpdb:
> > >
> > > [root at ns1 named]# grep nt01 named_dump.db
> > >         3600    IN      MX      10 nt01.ankr-tite.com.  ;Cl=2
> > >         3600    IN      MX      10 nt01.wejit.com.      ;Cl=2
> > >
> > > I don't want to take this out as my mail stops going to nt01 if I do.  Is
> > > there another way I should be doing it?
> > >
> >         It normally is a NS record which causes this message but
> >         any record that causes additional section processing can
> >         do it, like MX records.
> >
> >         As for not removing the offending record. How can your mail
> >         be going to nt01.wejit.com as there is no A (or any other)
> >         record for nt01.wejit.com.  That is what the error message
> >         is telling me.
> >
> 
> I'm not sure why it works but it does work.  I suspect it's like this:
> nt01.wejit.com is
> the primary mailhost but ns1.wejit.com is the secondary;  so when the sender
> can't find nt01 it goes to ns1.  Then, ns1 (who is permitted to relay) finds
> nt01's address either in it's /etc/hosts or from our internal DNS server and
> sends it on.
> 
> >
> >         You need to look in named_dump.db and find out the owner of
> >         the nt01.wejit.com record.
> 
> The owner?  I don't understand - how would I find that?  I grepped the file f
> or
> nt01, you can see the results above.
> 
> 

The dump is in master file format.  Information is inherited from previous
records and not just printed out every time.  In the file there will be
something like this.

$ORIGIN example.com.
xxxx	3600	IN	MX	0 some.host.example.com.
	3600	IN      MX      10 nt01.wejit.com.

In this example the owner of the MX record would be 'xxxx.example.com'.

Mark

--
Mark Andrews, Nominum Inc. / Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com