Domain of sender address ... does not exist

[John Aldrich]

On Friday 11 December 2009, Tim wrote:
> On Thu, 2009-12-10 at 10:14 -0800, Philip A. Prindeville wrote:
> > his message was created automatically by mail delivery software.
> >
> > A message that you sent could not be delivered to one or more of its
> > recipients. This is a permanent error. The following address(es)
> > failed:
> >
> >   philipp... at redfish-solutions.com
> >     (generated from xyzzy at users.sourceforge.net)
> >     SMTP error from remote mail server after RCPT
> > TO:<philipp... at redfish-solutions.com>:
> >     host mail.redfish-solutions.com [66.232.79.143]:
> >     553 5.1.8 <philipp... at redfish-solutions.com>... Domain of sender
> > address philipp... at redfish-solutions.com does not exist
> >
> > This is on an externally generated email that is coming into my domain
> > (redfish-solutions.com). The mailbox name is valid (it's been munged
> > here to protect against spam address harvesters).
> 
> Well, according to my quick test, using the "dig" tool, that domain
> doesn't exist.  Though, a whois check shows that it does.  So, somewhere
> there's a problem with your public domain records.  The dig tool might
> help you sort out where (you can query different DNS servers with it).
> 
>  dig redfish-solutions.com
> gets no answer
> 
> But this does:
>  dig redfish-solutions.com MX
> 
Sounds like there may be no "A" record for redfish-solutions.com.