Actually, I added the IP to the MX record out of desperation. I have changed it back to the domain name and you can dig or do a dnsreport and see that it is fine. However, I am still getting the same error. I have pasted the full header at the bottom of the tickt.
For Jedito, I can ping kanatasmokehouse.com (domainname1.com) from marketing.ca (anotheruser.com) and I can also complete a tracert. They are on different servers but in the same data center.
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A message that you sent could not be delivered to one or more of its
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------ This is a copy of the message, including all the headers. ------
Received: from market by mail.marketing.ca with local (Exim 4.52)
; Wed, 04 Oct 2006 14:22:18 -0500
Received: from 188.8.131.52 ([184.108.40.206])
(SquirrelMail authenticated user email@example.com
by marketing.ca with HTTP;
Wed, 4 Oct 2006 14:22:18 -0500 (CDT)
Date: Wed, 4 Oct 2006 14:22:18 -0500 (CDT)
X-Priority: 3 (Normal)