RE: Unencumbered Checking (was Re: DEPLOY: SPF/Sender ID supportin Courier)

[<terry@xxxxxxxxxxxxxxxxxxxx>]

But by the time the email gets to the MUA its TOO LATE.  Client machines cannot do an SMTP reject.

But SPF classic requires *zero* changes to the MUA, its just the MTA that is enhanced.

This is especially true if one of the goals is to preserve MTA to MUA bandwidth nad/or clutter of
bad emails at MUA.

Terry Fielder
Manager Software Development and Deployment
Great Gulf Homes / Ashton Woods Homes
terry@xxxxxxxxxxxxxxxxxx
Fax: (416) 441-9085


> -----Original Message-----
> From: owner-ietf-mxcomp@xxxxxxxxxxxx
> [mailto:owner-ietf-mxcomp@xxxxxxxxxxxx]On Behalf Of Yakov Shafranovich
> Sent: Tuesday, August 31, 2004 1:58 PM
> To: Paul Iadonisi
> Cc: IETF MARID WG
> Subject: Re: Unencumbered Checking (was Re: DEPLOY: SPF/Sender ID
> supportin Courier)
>
>
>
> Paul Iadonisi wrote:
>
> > On Tue, 2004-08-31 at 12:22, Markus Stumpf wrote:
> >
> >>On Tue, Aug 31, 2004 at 10:26:18AM -0500, wayne wrote:
> >>
> >>>While those are the claimed reasons, I think it is quite clear from
> >>>talking to quite a few people involved with this working group that
> >>>the REAL reason is:
> >>>* People want MS on board because it would *really* help deployment
> >>>  and MS *really* wants their PRA algorithm.
> >>
> >>Why will that help deployment?
> >>The latest surveys state that MS SMTP servers have less than 10%
> >>market share.
> >>I'd say having sendmail + qmail + postfix + exim will help more than
> >>having MS on board for whatever solution.
> >
> >
> >   I made this point a while ago on the spf-discuss list.
> While it would
> > be nice to have Microsoft on board, they do *not* have the
> lion's share
> > of the installed base of internet facing SMTP servers.  That's where
> > most of implementation of these standards will take place.
> >   I would be quite disappointing if this draft was pushed
> through with
> > the current patent license because someone thought 'we need
> Microsoft'.
> > Even if we did, shunning this license does not have to mean pushing
> > Microsoft out, so to me, it would make no sense to push this through
> > just because someone thinks we need Microsoft.
> >
>
> We had this argument in the ASRG as well until some pointed
> out that the
> PRA algorithm works in MUA. The market share on Microsoft
> MUAs is over 70%.
>
> Yakov
>