[BlueOnyx:17635] Re: Mail Delivery Subsystem error mesage

[Tom]

Chris Gebhardt - VIRTBIZ Internet <cobaltfacts at ...> writes:

>> >
> > The original message was received at Wed, 20 May 2015 02:01:11 -0400
> > from localhost [127.0.0.1]
> >     ----- The following addresses had permanent fatal errors -----
> > <admin at ...>
> >      (reason: 550 Host unknown)
> >     ----- Transcript of session follows -----
> > 550 5.1.2 <admin at ...>... Host unknown (Name server:
> > localhost.localhost: host not found)
> >
> 
> Yes, you need a valid hostname configured on your server.   That should 
fix.
> 
Thanks Chris,
There is a valid hostname configured. This is what is puzzling me.
Tom