I have Exchange 2010 SP3/Rollup 4 running on Windows 2008 R2 Ent.
I send/receive mail for two domains on the server. Lets say maindomain.com and seconddomain.com
I have a mailing list set up that has all my users in it (several hundred), lets call it Allusers@maindomain.com
I set it up so only certain people can send mail to the list and have it go to a moderated box first.
It's all working fine. Each person I give permission to, to send to the list is able to.
Except for one.
This persons main email address is firstname.lastname@example.org (all others who have permission to send mail to the list have email addresses under the maindomain.com. I also created email@example.com for him, but it doesn't seem to be the primary address (it's not in BOLD) under the 'E-mailAddress' tab.
If he tries to send mail to the list, he gets a message saying he's not authorized.
How can I get firstname.lastname@example.org to be able to send to the list?