RE: [Asrg] Consent Proposal

At 12:18 AM 6/27/2003 -0700, Howard Roth wrote:
>[..]
>
>Here's an idea about validating a message before I can ever see it.  This
>can be considered a consent-based concept, as it can be a parameter at the
>ISP end for each mail user. It adds quite a bit of overhead to the mail
>server as it requires two additional messages for each one sent.  I see it
>being part of the MTA process.  I send a message to someone.  The MTA
>replies to the message with a "proof of sender request, " basically a
>specially formatted email message that goes back to the server that sent it
>based on the return address.  The sender's MTA responds with a "confirmation
>request"  if it did send the message and the message is now available for
>download based on moving it from the pending directory to a user directory.
>If there is no response within a certain period the message is discarded.
>[..]

This has been proposed before by John Fenley as part of C/R systems (see 
this message 
http://www1.ietf.org/mail-archive/working-groups/asrg/current/msg05173.html). 
I was thinking of putting it into the CRI protocol that Eric Dean is 
working on.

Yakov 

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