This is why I'm crushed.
Customer: "Pete is it possible to block all emails that start with Hi in the body of the mail for one user?"
Me: "What? Are you serious? You cant really want that?"
Customer: "That's the instruction I've been given."
Me: "But all you'll do is in a month or so's time is come on the phone screaming a particular mail has not arrived."
Customer: "Is it something you need to do or do I need to do it on my exchange box?"
Me: "You need to do it on yours, sorry, bye."