I've mentioned this to Hector directly, but my feeling is that while an SMTP
extension can be useful, I think tying it to Greylisting is a bad idea. If
what we're looking for is a way within a SMTP response to indicate a retry
time for the sending MTA, this can and SHOULD be a generic specification and
not one tied to a single application. Something along the lines of what is
in the Atkins proposal seems more reasonable to me
(http://datatracker.ietf.org/doc/draft-atkins-smtp-traffic-control/).
Best Regards,
-- Tim
----- Original Message -----
From: "Hector" <sant9442(_at_)gmail(_dot_)com>
To: <ietf-smtp(_at_)imc(_dot_)org>
Sent: Wednesday, October 26, 2011 10:04 PM
Subject: new draft: draft-santos-smtpgrey-01
A New Internet-Draft is available from the on-line Internet-Drafts
directories.
Title : SMTP Service Extension for Greylisting Operations
Author(s) : Hector Santos
Evan Harris
Filename : draft-santos-smtpgrey-01.txt
Pages : 18
Date : 2011-10-26
GREYLIST is a SMTP extension to formalize the widely supported
Greylisting mail filtering method and to help support SMTP rejected
transports by following a new formal structured 4yz server temporary
rejection response by including a "retry=time-delay" tag string which
SMTP clients can use to optimize the rescheduling of the mail
delivery attempts. With adoption, network overhead reduction in
wasteful mail delivery attempts will be realized.
A URL for this Internet-Draft is:
text: http://www.ietf.org/internet-drafts/draft-santos-smtpgrey-01.txt
html: http://tools.ietf.org/html/draft-santos-smtpgrey-01
I would like to extend my grateful appreciation to the interested parties,
onlist, offlist and lurking members of the Greylist-user support group,
who provided input and assisted with the new draft. Thanks.
==
HLS