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Re: ESMTP header (Hdr220)
Matti Aarnio <email@example.com>
> Nowhere in these is a note telling that one should do
> EHLO protocol only when word "ESMTP" is present in the
> initial greeting message.
Certainly. But 'send EHLO instead of HELO' in the RFC is a should,
not a must, so a client -can- send HELO in any given connection if it
really wants to. Also, the RFC implies that EHLO-capable clients may
reasonably use HELO in at least one case (RFC 1425/1651/1869, end of
> From somewhere I seem to recall that one should *not*
> do that "ESMTP" analysis.
Try to keep 'de facto standards' from growing up by not conforming, or
improving zmailer's interoperation with this stupid-but-legal quirk?