Hi,
I have exchange 2010 environment; all the roles are running on individual servers. Recently I have setup an additional edge server and have completed with edge subscription as well. The outgoing email from the internal network have no issue. However the incoming emails are stuck at the new edge server and unable to relay to the hub server. The error message in the queue is “451 4.4 0 primary target ip address responded with 5.7.3 cannot achieve exchange server authentication”.
How can I resolve this?
Arun.T