Domain of sender address ... does not exist

[John Aldrich]

On Friday 11 December 2009, Tim wrote:
> On Fri, 2009-12-11 at 06:08 -0500, John Aldrich wrote:
> > Sounds like there may be no "A" record for redfish-solutions.com.
> 
> There definitely wasn't, here.  But the original poster didn't state
> whether there should be public records for the domain.  "External" could
> just been another network they work with.
> 
Even if there's no website, there needs to be an "A" record. Since it's a 
valid domain. I would guess they're trying to set up an email-only domain 
and some mail servers don't like that. Just leave the "parked" website up 
and running at your registrar and that might work. OTOH, you might still 
need to put up a generic "under construction" website to fool the spam-
checkers so that the A record and the MX record match.