MX question

[Barry Margolin]

In article <ecf9l4$cjq$1 at sf1.isc.org>, "Jim" <jim at compton.net> wrote:

> hi folks,
> 
> I have a customer's dns server (bind - not sure of version) not able to 
> resolve my mx records to one of my zones. Here are my current records:
> 
>  100 mydomain.com.s5a1.psmtp.com.
>  200 mydomain.com.s5a2.psmtp.com.
> 
> I'm being told from the customer that my mx records are formatted 
> improperly. His argument is that his version of bind is unable resolve the 
> mx record when the domain name _does not_ appear at the end of the record 
> (ie s5a1.psmtp.com.mydomain.com would work fine for him).
> 
> Is this is a known problem with some versions of bind?
> Can someone point me to documentation that tells me proper/illegal syntax 
> for my mx records.

MX records are allowed to point to any name that has an A record.  Is he 
claiming that the MX record has to point to a name in the same domain?
There has never been such a requirement, and there are many domains that 
do not fit that criterion.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
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