RCODE

[Kevin Darcy]

To expand a little bit, remember that there are really 2 parts to any query:
the name and the record type. You can get a NOERROR-with-0-answers response
from an auth nameserver if the name you queried is matched, but no records
of the queried type exist. There are no A records for "fred.sun.com", but
sun.com appears to have a wildcard MX record which will match the name in
any sun.com query you throw at their servers. That's why it returns
NOERROR and 0 answers: because it matched the name you queried with the
wildcard MX record, but MX wasn't the record type you queried.

I don't know exactly why your nameserver is returning NOERROR instead of
NXDOMAIN for fred.mydomain. Do you have a wildcard in the zone? A little
more information about how your nameserver is configured would be helpful...


- Kevin

Mark.Andrews at nominum.com wrote:

>         3 = NXDOMAIN (Name Error)
>         0 = NOERROR
>
>         Mark
>
> > Hi,
> >
> > Can someone tell me which must be the RCODE when a nameserver
> > authoritative for a domain resolves a name which doesn't exist ?   The
> > RCODE should be 3  ? or 0 ?
> >
> > I've made some tests :
> >
> > If I try to resolve a name (e.g. fred.sun.com)  from the nameserver
> > authoritative for the domain "sun.com" I've a RCODE=0 but if I try to
> > resolve a hostname (e.g. fred.redhat.com) from the nameserver
> > authoritative from the domain "redhat.com" I've a RCODE=3
> >
> > I've set up my own domain on Solaris 7 (bind 8.1.2) and when I try to
> > resolve a mame which doesn't exist (fred.mydomain), I've a RCODE=0
> >
> > Any idea ?
> >
> > Thanks
> >
> > Fred
> >
> >
> >
> >
> > Sent via Deja.com http://www.deja.com/
> > Before you buy.
> >
> >
> --
> Mark Andrews, Nominum Inc.
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com