I have an issue where internal mail isn't being delivered to any recipient. Relaying is working properly from within the environment but I'm not receiving emails I am sending to myself as a test. Emails from the outside are being delivered properly. I send the message from Outlook to myself, they show in my sent items folder but are not being delivered.
The environment consists of two Exchange 2010 servers, one as Transport, the other Mailbox.
I have checked protocol logging and the messages are not showing there, nor are they showing in the message tracking web interface. I have also run BPA and am not getting any errors that appear to be causing the issue (old NIC drivers, lack of storage limits, etc.) I get a port 25 telnet response on the Transport server, I have rebooted several times, I have restarted the Transport service. Any help would be greatly appreciated.