I have Exchange working correctly for domain.net I added a new e-mail address (firstname.lastname@example.org) to one of the exisiting users. At the registrar, I have the domain name sub.otherdomain.biz pointing to my server. The error I am getting is:
The original message was received at Thu, 6 Sep 2012 12:40:16 -0400 from mail.networksolutionsemail.com [22.214.171.124]
----- The following addresses had permanent fatal errors ----- <email@example.com>
(reason: 550 5.7.1 Unable to relay)
----- Transcript of session follows ----- ... while talking to remote.domain.net.:
<<< 550 5.7.1 Unable to relay
550 5.1.1 <firstname.lastname@example.org>... User unknown <<< 503 5.5.2 Need rcpt command
Do I need to add sub.otherdomain.biz to my SAN Cert?
By the way, email@example.com is receiving mail.
Thanks in advance for your help!