I need to review some emails before they go out.

Here is a good one. I am building an Exchange 2003 enterprise box. My company works with space and defense contractors so we fall under ITAR regulations, which states that all emails going outside the country, need to be reviewed first by someone out our plant. We have an office in Isreal, and we will be hosting their email in house.  So the question is can this be done? Can emails destined for an outside mailbox....physical mailbox that is. I am going to connect them using http over rpc. How can I filter or setup a script that says any emails sent to all the people in the Isreal office need to go to this certain mailbox for review first. Then sent from that mailbox. The catch here is that we don't want anyone to know we are reviewing these emails. What I mean is, we don't want the person reviewing the email to be the sender of the email. It has to still come from the original mailbox. Ok how's that for a question. I want to roll this out in 30 days so let's see what the experts come up with. Good luck.