Re:I'm not suprised.. (Score 1)

I agree, I administer a mail domain, and get rather annoyed when someone - machine or otherwise - starts playing around with the commands.

The smtp server I'm developing isn't quite ready for that kind of abuse *grin*, it just responds '502 Command not implemented' to anything it doesn't recognise...

My main point is that before I started developing the server, I didn't try to log onto another one, I dug into the RFC's:

http://www.rfc-editor.org/rfc.html

to learn what I was getting myself into. In this case rfc821 (and rfc822) would be on target.