[Greylist-users] New IETF Draft SMTP Extension for Greylisting Operations
hsantos at isdg.net
Mon Oct 24 00:38:20 PDT 2011
The following IETF draft was submitted for review by Greylisting
operators and developers.
Title : SMTP Service Extension for Greylisting Operations
Author(s) : Hector Santos
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.
All input and considerations from large, small to mom and pop people
would be greatly welcome.
If you are not a member already, the IETF-SMTP mailing list would be
the preferred discussion area and it would be all the key cogs that
will have a weight in moving this SMTP extension proposal forward. To
join the list, here is the URL:
Your participation and the showing of support from all the active
Greylisting systems that may support this SMTP extension with a
retry=time hint in the 4yz response text will go a long way to add
tremendous "voting power" and weight in the direction this SMTP
extension will take.
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.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 planning to explore and implement the SMTP
extension for your own Greylisting server implementation, provide the
email address info so we can run test as well against your system
compliant with the proposal extension.
Thanks for your interest.
Hector Santos, CTO
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