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Re: [spf-discuss] TENBOX/E as an AUTH type

2007-04-06 07:56:02
On Friday 06 April 2007 10:34, Seth Goodman wrote:
Scott Kitterman wrote on Thursday, April 05, 2007 11:01 PM -0500:
On Thursday 05 April 2007 23:47, Seth Goodman wrote:
Scott Kitterman wrote on Saturday, March 31, 2007 5:44 PM -0500:
For initial experimentation would could use an X- ESMTP keyword
without having to go through all the RFC lawyering.

IIRC, this is similar to the SUBMITTER extension proposed a long
time ago.  That raised many howls at the time.

The howls were because it was tied to PRA.  Not because it was an
ESMTP addition.

Both were issues.

I think the biggest issue is that there has to be a motivation for a reciever 
to believe something that the sender tells them during the ESMTP dialogue.  
The identities associated with SPF (and even SID to a degree) and DK/DKIM can 
be validated out of band (in DNS).

Submitter was just a hack to get you to go to DATA.  Note that Submitter was 
also the SID solution to the forwarding problem.  How would a TENBOX identity 
(regardless of if it's an AUTH parameter or an ESMTP keyword) be different?

Scott K

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