Because Stanford has a silent proxy picking up SMTP traffic, and running it through their security system. http://serverfault.com/questions/382329/routing-smtp

Because Stanford has a silent proxy picking up SMTP traffic, and running it through their security system. http://serverfault.com/questions/382329/routing-smtp-and-pop3-past-iptables-through-proxy http://serverfault.com/questions/382329/routing-smtp-and-pop...