Hello I am in the process of migrating from exchange 2003 to 2010. Everything is working ok except I am unable to send email from 2003 mail accounts to 2010. I get the following error
test2010 on 2/23/2015 3:44 PM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<agcex2.ECC.COM #5.7.1 smtp;550 5.7.1 Unable to relay for test@ECCtest.org>
I have tried setting the smtp relay settings to allow all as a test with no luck. I am also able to telnet between the two servers on port 25. Any ideas on what might be causing this?