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.
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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.