Report of Email

There are a couple of ways you could do this: extract the mailbox into a Personal Folders file (.pst) using ExMerge or the Outlook client. You could then look at the mailbox, search on various criteria etc..

You could probably do this with Crystal Reports for Exchange as well. Both ExMerge and Crystal Reports are incuded in the BackOffice Resource Kit.

I used a program for GroupWise called EmailXtras. They also make a product for Exchange. While it's pricy, it was easy to install and configure, and would give me reports on EVERYTHING in GW. What user got the most mail, size of attachments, title of emails, what address they came from, size of mail boxes, etc. I had over a thousand users, so spending the money wasn't a problem. With 50 users here, i wouldn't think of it.
Hope that helps.