Troubleshooting Guide

07:31:59.878 |28321,,,MTA,12,Thread=MtaMailDelivery−7;
class=CsUnityMtaMessage;Attempting to relay a message that had already been
relayed. NDRing the message to:f99b2b0c−7f8d−440e−838d−c4214a8bcc8c
When this occurs, navigate to Connection Administration > System Settings > SMTP Configuration >
Smart Host.
You might find that the Smart Host is the actual Unity Connection server name or IP address. This
causes a loop which is related to the message found in the MTA trace. Change this setting to an Exchange
server.
Updated: Aug 14, 2013 Document ID: 116398