Tip of the Trade: E-mail Encryption / ServerWatch.com, 10 December 2007
http://www.serverwatch.com/tutorials/article.php/3715686
Carla Schroder
"When you send a cleartext, unencrypted e-mail, you are saying "I don't care who reads the contents of this message, I don't care if someone possibly alters the contents, and I don't care if someone else pretends to be me." Doubtless it is not your intention to say these things, but it is an unfortunate fact of life that this is the result."