mail routing question

[Michael Voight]

Well, first of all, for this to work, you need an A record for
miles.ods.org.

MX records point to hosts A records. Therefore the MX record in
modernmissive.lifter.org is never going to care about the MX records in
the other domain. It is only going to care about the A record for
miles.ods.org as that is the listed server. 

If you want this to work if modernmassive is down, then you need to make
another MX record, pref 20 (>10) that points modernmissive.lifter.org at
another mail server

Michael

> 
> If I have a domain (modernmassive.lifter.org) with a zone file like this:
> 
> modernmassive.lifter.org IN MX 10 miles.ods.org
> 
> and a domain (miles.ods.org) with a zone file like this:
> 
> miles.ods.org IN MX 10 miles.ods.org
> miles.ods.org IN MX 20 <my other mail server>
> 
> will mail addressed to user at modernmassive.lifter.org go to <my other mail
> server> if miles.ods.org is not available?

Joel Miles wrote:
> 
> > No.
> > You would need to have a pref 20 record for the domain you are referring
> > to.
> > MX records for one domain have nothing to do with another
> >
> > Michael
> 
> I don't exactly understand your answer, can you give me an example?