We are running Exchange 2003, XP Clients, and Outlook 2003. I have a user claiming they are not receiving messages from a particular person, say firstname.lastname@example.org. Joe sent the email to three of my users. Two of them received it and the other claims they have not. When I went into the message tracking of Exchange, it does state that the messages was delivered to the email store of the user who claims they are not getting the message.
This is where I am stumped. I went into OWA under their account and searched the entire mailbox for the senders email address and the message could not be found. I also went into recover deleted items and looked there and found nothing. Any thoughts on what to try next?