I am wondering about the overall network configuration. If you are connecting to the internet via proxy thru one of the five network servers... well at that point it may well be a different story then him simply collecting information stored local, etc.

Some of the recent court ruling about personal emails and transaction from company computers are requiring the info be store for a certin amount of time. Personal emails delivered to a Exchange server (if your running something like SBS) are part of the company and no longer personal. I know at my work place any email that comes in is considered company property. Period. no exceptions.

Is it possbile that 1) there is a good reason for your partner to be capturing everything? or 2) that he is just showing off? "See what I can do.. arent you impressed" type stuff?

But to really solve this, go back to post #1. Business and personal information rarely mix.