Robert A. Rosenberg wrote:
Raising an issue about EHLO/HELO verification and Port 587/SUBMIT, I
have the impression (possibly erroneous) that Port587 use requires a
SMTP AUTH handshake.
No, maybe you confused it with this MUSTard in 4409 (note "unless"):
| The MSA MUST by default issue an error response to the MAIL command
| if the session has not been authenticated using [SMTP-AUTH], unless
| it has already independently established authentication or
| authorization (such as being within a protected subnetwork).
NOTE: That comment may fork the discussion and trigger the need
for a new ISSUE Number. Editor/Monitor, please do a RE:/WAS to
issue one if appropriate.
One of the 4409 authors told me to post an I-D if I want to fix a
bug (missing Resent-* in 8.1) in preparation of a 4409-to-STD move,
see <http://article.gmane.org/gmane.ietf.smtp/5099> + 5098 + 5100.
It's no SMTP bug. Of course we should check that 2821bis is still
compatible with 4409 (wrt issues like TLDs or incomplete domains).
Frank