Unforunately, it will not. It just assumes it is a numeric hostname.
It will, however, fail queries if you leave out the prefernces...
On Thu, 14 Sep 2000, George Schlossnagle wrote:
> 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.
> > -
> >
> > "name", not "address", in both cases.
> >
> > --
> > ## List details at http://www.exim.org/mailman/listinfo/exim-users Exim details at http://www.exim.org/ ##
>
--
