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From: Lyndon Nerenberg VE7TCP <lyndon@orthanc.com>
To: "Ulf Zimmermann" <ulf@z-code.ncd.com>
cc: imp@village.org, kuku@gilberto.physik.rwth-aachen.de,
        freebsd-hackers@freebsd.org
Subject: Return-Receipt (was: Re: mail sending problem (how can this happen?))
In-reply-to: Your message of "Fri, 09 Feb 1996 09:36:34 PST."
             <9602090936.ZM1100@zolaris.z-code.com> 
Date: Fri, 09 Feb 1996 16:10:28 -0800
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>>>>> "Ulf" == Ulf Zimmermann <ulf@z-code.ncd.com> writes:

    >> Return-receipt isn't standardized, but it mostly works.

It should be noted that Return-Receipt-To has been officially deprecated
by the IETF. Don't count on any MTA supporting this facility in the
future. One of the IETF working groups (NOTARY?) is working on providing
a (more useful) replacement using a mixture of MIME and ESMTP. The NOTARY
mail archives are a good starting point if you want more information on
this.

--lyndon