While testing my pop3 protocol on my exchange 2003 server i noticed that even with authetication on my virtual smtp server i still can use my email address from any rogue my machine and send emails to my self. The authetication will stop it if i try and send them to someone else. I noticed that if I send them via smtp to my self though (external) via outlook express client. Is there a way to turn on securtiy even for my own addresses??