Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/18/84; site brl-tgr.ARPA
Path: utzoo!watmath!clyde!bonnie!akgua!gatech!seismo!brl-tgr!tgr!mrose%NRTC@USC-ECL.ARPA
From: mrose%NRTC@USC-ECL.ARPA (Marshall Rose)
Newsgroups: net.mail.headers
Subject: Re: Need for new field in RFC and MHS standards
Message-ID: <427@brl-tgr.ARPA>
Date: Mon, 9-Dec-85 10:50:21 EST
Article-I.D.: brl-tgr.427
Posted: Mon Dec  9 10:50:21 1985
Date-Received: Wed, 11-Dec-85 03:56:19 EST
Sender: news@brl-tgr.ARPA
Lines: 11

In addition, MHS has the notion of a protocol field which says what type
of protocol is being used.  The only defined value is "P2" which stands for
InterPersonalMessage.  Other values will probably be defined in the future.

In the standard 821 world, there is NO need for what you suggest.  The
message's envelope contains (among other things) a return-address.  What
programs which generate messages should do (if they don't want to see a
failure notice) is simply leave the return-address blank.  This is understood
to mean "don't tell me about it if it loses".

/mtr