Running Exchange 2007 SP2 with a third party (external) SMTP gateway.
email@example.com says they sent to firstname.lastname@example.org. User1 says they never received it.
Our SMTP Gateway people say their logs show the message was passed to one of our Hub Transport servers.
I ran get-messagetrackinglog and the eventID is DELIVER to the user's mailbox.
How can we find out what happened to the message? In particular I'm interested in finding out what folder the message was delivered to, if User1 had any Outlook rules to send the message straight to Deleted Items etc.