I am trying to send a message to email@example.com. I receive the following:
Reporting-MTA: dns; comomta-po-03v.sys.comcast.net [18.104.22.168]
Received-From-MTA: dns; zm9kkzp2j2 [22.214.171.124]
Arrival-Date: Thu, 09 Mar 2017 18:41:38 +0000
Final-recipient: rfc822; firstname.lastname@example.org
Diagnostic-Code: smtp; 550 Invalid recipient <email@example.com> (#5.1.1)
Last-attempt-Date: Thu, 09 Mar 2017 18:41:38 +0000
Is there a setup change that I need to make, or is there some other issue?