From: /dev/rob0 (rob0gmx.co.uk)
Date: Thu Aug 17 2006 - 12:15:59 CDT

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

On Thursday 17 August 2006 12:02, John Beaver wrote:
> > ;1.145.116.194.in-addr.arpa. IN PTR
>
> No PTR (rDNS) record for 194.116.145.1

Right, per RFC 2317 it's a CNAME:

> > 1.145.116.194.in-addr.arpa.
> > 654 IN CNAME 1.0/25.145.116.194.in-addr.arpa.

This should work. IWFM, I run two RFC 2317 classless in-addr.arpa
networks.

> Since the hostname for 194.116.145.1 does not have a matching PTR
> record (rDNS), it is unknown.
> Not a postfix problem, problem with the OPs understanding of postfix.

I agree it's not a Postfix issue. It could be the system resolver
libraries, or it could even be a brain-dead upstream router. System
designers might not have a very good understanding of how DNS works,
therefore they might have hardcoded the idea that the only valid RR
type in an in-addr.arpa. zone is PTR. The DNS is not artificially
limited in this way.
--
    Offlist mail to this address is discarded unless
    "/dev/rob0" or "not-spam" is in Subject: header

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]