On Mar 19, 2007, at 7:17 PM, Timothy A. Napthali wrote:
The only problem I can foresee is that I remember reading somewhere
that
some MTAs use NOOP as a kind of keep-alive at times.
You will also find the command sequence RSET+NOOP used to delimit
transactions when an SMTP client reuses an established SMTP session
to send multiple messages. Once upon a time the NOOP after RSET was
required to work around some SMTP server protocol state machine
bugs. While those servers a likely long gone, I still see this
client behaviour on occasion.
--lyndon
