[Raw Msg Headers][Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
ESMTP header (Hdr220)
Just a note.
To start ESMTP session, some clients (i.e., Postfix) want to see
"ESMTP" word in 220 initial server reply.
In case of two-string reply, like Zmailer-'51 default config, the
results seems to be unpredictable. I.e., same Postfix says EHLO if
ESMTP is present in _second_ line. So, the default "smtpserver.conf"
with uncommented Hdr220 parameters forces plain SMTP session -
without TLS, etc.
The advice is to have "ESMTP" in ALL initial strings... or just to
have a single 220 string :-)