Block student to student email in Exchange 2k3
We have had our email system (exchange 2003) since December 2006 and always had the problem of students emailing eachother and using it like a "messenger" type system. Whilst we have over time tolerated that or at least been able to control it somewhat, it seems now they are emailing coursework to eachother which of course is a big no.
Whilst I appreciate they could just as easily email it through their own personal email accounts or share them on pen drives, if we can remove this method it's better than doing nothing (also been meaning to stop it for some time anyway for other reasons).
I'm not even sure if it can be done with Exchange 2003 or if we'd need to have 2007 for this. We'd want to continue allow teacher-teacher and teacher-student emailing of course.
Any ideas? Yes/maybe/forget it?