68bb4124_xchange_2010_and_Exchange_2007__EventID
[Description] Generally seen when a message is received on a proxy address and resolved to the default email address. The RelatedRecipientAddress field has the proxy address the message was sent to. The recipients field has the default address it was resolved (and delivered) to. [EventID] 
RESOLVE
Exchangepedia | Message Tracking from the command line in Exchange 2010 and Exchange 2007
EventID