Question : Exchange server 2003 ent edition finding sent messages of particular date

Hi guys
1)
-I am running exchange server 2003 ent edition over server 2003.  If a user from our domain uses OWA and sends a message on a particular date, how can I find all the send messages of that particular user which were sent?  Where and how can I find it?
2)
-I am running exchange server 2003 ent edition over server 2003.  If a user from our domain uses Outlook 2003 and sends a message on a particular date, how can I find all the send messages of that particular user which were sent?  Where and how can I find it? considering the fact that the sent folder has nothing in it?
THanks in advance
AM

Answer : Exchange server 2003 ent edition finding sent messages of particular date

You need to have message tracking enabled at the time the messages were sent.  You can probably then parse through the log and determine what was done.