Rob Becker wrote:
I'm working on testing that mail is delivered properly from outside our network, through our various virus and spam filters and to the appropriate email server. I would like to telnet into one of our mail gateways and send a message from there destined to a new internal server. I know how to telnet into the mail server, but I'm not finding the appropriate commands to actually send a message once I'm connected. Can anyone point me in the right direction. My googling skills have failed me on this one since I can't seem to hit the magic phrase necessary to find a resource on this topic. Any help, pointers, references greatly appreciate.
You might try RFC 2821, the current official standard for SMTP:
http://www.ietf.org/rfc/rfc2821.txt
Appendix D lists several example transactions, which should get you started.