Author: George Schlossnagle Date: To: Dave C. CC: Nigel Metheringham, Heinz Ekker, exim-users Subject: Re: [Exim] Broken MX?
I think bind will error out if you try to set an MX pointing to an ip
and not an address.
"Dave C." wrote: >
> On Thu, 14 Sep 2000, Nigel Metheringham wrote:
>
> > hekker@??? said:
> > > I never knew that there was some restriction, that MX records should
> > > only point to names. The only restriction I know is that an MX-Record
> > > shouldn't point to a CNAME.
> >
> > The right hand side of an MX record is a NAME in the RFCs and an IP
> > address is invalid.
> >
> >
> > hekker@??? said:
> > > Apart from that, sendmail delivers without complaint. Is exim a bit
> > > 'more holy than the pope' here?
> >
> > Thats a strange analogy for sendmail :-)
> >
> > This has come up recently, unfortunately its very hard to effectively
> > search for phrases like ip address and mx record in the archives so I
> > can't actually find the references. I believe Philip was looking at
>
> References as follows:
>
> - RFC974 says:
> -
> - Each MX matches a domain name with two pieces of data, a preference
> - value (an unsigned 16-bit integer), and the name of a host.
>
> - RFC1034 3.6 defines an MX record as follows:
> -
> -
> - MX a 16 bit preference value (lower is
> - better) followed by a host name
> - willing to act as a mail exchange for
> - the owner domain.
> -
