Restricting attached exe files should be a good part of any corporate mailserver. Helps keep a lot of those mass-mailing worms from spreading, even before the antivirus updates are published. I've seen that happen around here when I get all those emails through the Exchange server that have been sterilized.Ahh, corporate/academic IT: binding the hands of the users so they can't do any harm.
------------------
When 1337 hax0rs start impaling each other with swords and typing code with a hook on one hand, then they can modify the term "pirate."