It is definately backward compatiable as there is a Extended SMTP header
(NCC) that also needs to be in place for the NCC processing to proceed.
Keith Moore wrote:
On Tue April 5 2005 15:30, Internet-Drafts(_at_)ietf(_dot_)org wrote:
A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Ncc in Mail Header
Author(s) : A. Sankar
Filename : draft-arun-ncc-smtp-02.txt
Pages : 4
Date : 2005-4-5
This draft presents a mechanism to simplify one of the cumbersome
aspects of mailing, when one needs to send mails only to a subset of
mail-ids from an alias [ALIAS] . The basic intention is only to minimize
the complication and difficulty of a mail user when a mail needs to be
sent to n - m mail IDs i.e. send it to a group Id of n and exclude m
from the alias [ALIAS] list.
A URL for this Internet-Draft is:
As the draft lacks any indication of where discussion should take
place, I'm sending these comments to the author and the IETF discussion
list, with informational copies to the ietf-822 and ietf-smtp lists.
All of your comments miss the most important points - namely that this
proposal breaks layering and it isn't backward compatible with the
installed base. For those reasons alone there's no way that this
proposal should be seriously considered.
"Sir, we're surrounded!"
"Excellent. We can attack in any direction!" --An Army Officer