Folks,
An SMTP Extension I-D was posted
Title : SMTP Service Extension for Greylisting Operations
Author(s) : Hector Santos
Evan Harris
Filename : draft-santos-smtpgrey-00.txt
Pages : 17
Date : 2011-10-23
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 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.
URLs:
http://www.ietf.org/internet-drafts/draft-santos-smtpgrey-00.txt
http://tools.ietf.org/html/draft-santos-smtpgrey-00
I would like to thank all the people who provided guidance in
producing this initial draft. Much obliged. It is far from done so
all input and considerations from large, small to mom and pop people
would be greatly welcome.
Our mail servers have already implemented the SMTP extension so if you
need a test site, you can send mail to:
test-smtpgrey(_at_)winserver(_dot_)com
If I have written to you in the past privately, you are probably
already auto white listed. So use an different sender account if you
are interested in testing the server with its 45x greylist responses
that now include the proposed retry=time hint information.
In addition, if you are exploring the proposal for your own Greylist
server implementation, provide the address info so we can run test as
well.
Thanks
--
HLS