----- Original Message -----
From: "Arvel Hathcock" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Friday, October 14, 2005 1:07 PM
Subject: Re: [ietf-dkim] Re: signature construct


> > and in any case I didn't expect IIM to be used to reject messages out of
> > hand.  But I'm willing to revisit that decision, especially since there
is
> > now stronger sending policy that might make outright rejection a
> > possibility in some cases.
>
> Well, this is definitely a topic for the WG but if we're contemplating
> rejecting the message during the SMTP session itself, my MTA is already
> doing that but, of course, it has to go through the DATA phase first.  If
> you want to reject prior to DATA us MTA vendors should implement on an
SMTP
> extension that fetches the headers only (there is one - I think) ?

Yes and no. We have the BDAT extension (A.K.A. chunking), RFC 1830, which
allows you to use an alternative DATA command to define chunks of blocks to
receive.

I have proposed (via discussion in MARID) a more specific HEAD like command
concept to address the same PAYLOAD issues for SENDER-ID/PRA and other
future application capabilities I foresee as an inevitible requirement in
the future.  Coupled with this, we need to revisit dynamic SMTP transaction
TIMEOUT issues.

--
Hector Santos, Santronics Software, Inc.
http://www.santronics.com






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