-----Original Message-----
From: Meng Weng Wong [mailto:mengwong(_at_)dumbo(_dot_)pobox(_dot_)com]
Sent: Monday, 26 July 2004 1:28 PM
To: Terje Petersen
Cc: ietf-mxcomp(_at_)imc(_dot_)org
Subject: Re: alternate submitter syntax
On Mon, Jul 26, 2004 at 11:05:29AM +1000, Terje Petersen wrote:
|
| The term SUBMITTER is getting confused even by smart people.
|
| SUBMITTER is merely the reply address. The parameter would have been
| a lot less confusing if it was simply called REPLYTO.
|
| The RFC.2822 FROM address is supposed to be identical to this
parameter.
In the forwarding case, where
a(_at_)a(_dot_)com sends mail to b(_at_)b(_dot_)com
b(_at_)b(_dot_)com forwards to c(_at_)c(_dot_)com,
When c.com receives the message, it sees
MAIL FROM:<a(_at_)a(_dot_)com> SUBMITTER=<b(_at_)b(_dot_)com>
Due to the nature of the forwarding relationship, b(_at_)b(_dot_)com
and c(_at_)c(_dot_)com can be said to represent the same entity.
In this case, SUBMITTER is not the reply address, and it is
not identical to the 2822.From header.
SUBMITTER identifies the entity responsible for the most
recent logical insertion of the message into the mailstream.
a(_at_)a(_dot_)com -> b(_at_)b(_dot_)com is one logical delivery.
b(_at_)b(_dot_)com -> c(_at_)c(_dot_)com is another logical delivery.
A logical delivery may consist of more than one physical
SMTP transaction due to the presence of smarthosts and
intramural relaying.
==== reply from TERJE below ===============================
Thankyou Meng for the example.
I am not sure that you got the sequence correct in your example
however as an MTA/MUA/USER sitting at "C" this is how I would expect
to interpret it.
Your example says that sitting at "C" I receive:-
MAIL FROM:<a(_at_)a(_dot_)com> SUBMITTER=<b(_at_)b(_dot_)com>
RFC.2822.FROM not equal to <b(_at_)b(_dot_)com>
If I am C(_at_)C(_dot_)COM then when I hit REPLY in MS-Outlook or any other MUA
I would expect my email to be sent to B(_at_)B(_dot_)COM(_dot_) After all they
are the
nominated responsible sender in your example.
When I hit reply I expect to be corresponding with the PRA.
The text of the proposed SUBMITTER standard says:-
"
Furthermore, SMTP clients MUST, if necessary, insert such RFC 2822
headers as defined in section 4 of [SENDER-ID] in order to ensure
that the purported responsible address determined from the RFC 2822
headers by the receiving SMTP server will match the SUBMITTER
address.
"
QUESTION1: Are you suggesting that when C(_at_)C(_dot_)COM presses the reply
button
the email should be directed to somebody other than the PRA.
QUESTION2: If the example you detail is correct then what are the
RFC.2822 headers that should match SUBMITTER as per the above quote
from the proposed standard. And if the reply address is different then
should it not also be SPF checked.