Exchange Server 2010 Version: 14.01.0355.002
I just created a new Distribution Group and added some members.
From an internal user, I can send an email to the group and all members receive a copy of that email.
From the outside, I send an email to the email address but it never gets delivered to the members, even though I do see it in the Exchange 2010 message tracking explorer.
The queue viewer shows no messages in queue.
I don't see any errors in the Windows Event Viewer.
I wonder what is happening to these emails.