Email can be spoofed by tweaking the settings on standard email clients like; Eudora, Outlook Express, etc.
There are also many websites that offer an automated process for creating and sending spoofed email by inserting someone else's email address into the Mail FROM: or REPLY TO: fields--which also contains information about the "origin" of the message--but most people don't know how to decipher it or simply assume that the spoofed message is genuine.
So taking down the mail server is not the solution it would appear.
The difference between Microsoft and 'Jurassic Park': In one, a crazy businessman makes a lot of money with beasts that should be extinct. The other one is a film.
