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Path: utzoo!watmath!clyde!cbosgd!ukma!david
From: david@ukma.UUCP (David Herron, NPR Lover)
Newsgroups: net.mail.headers
Subject: Re: Mail Header Summary Document...
Message-ID: <2297@ukma.UUCP>
Date: Thu, 17-Oct-85 17:10:36 EDT
Article-I.D.: ukma.2297
Posted: Thu Oct 17 17:10:36 1985
Date-Received: Sat, 19-Oct-85 05:01:03 EDT
References: <50000001@hpcnof.UUCP> <841@vortex.UUCP>
Reply-To: david@ukma.UUCP (David Herron, NPR Lover)
Organization: Univ. of KY Mathematical Sciences
Lines: 31

In article <841@vortex.UUCP> lauren@vortex.UUCP (Lauren Weinstein) writes:
>  For example, saying that
>smart sites SHOULD update the From: line is very misleading.  Updating
>of that sort has caused lots of problems since the From: line (which
>is supposed to be an 822 format line) is not subject to uniform
>handling across the networks.  Especially when @-sign addresses are
>present, but in general even when only ! addresses are present, the
>From:, To:, and other 822 lines should be LEFT ALONE by all intermediate
>sites.


But --Lauren--!!   What if you're an intermediate site and the message
is leaving the domain?  For instance, when seismo gateways uucp mail
into arpanet it munges the From: line so the uucp addresses will read
user@host.UUCP.  The reason for this is that most arpa sites would
not know what to do with an a!b!c address so they are given an address
which they can deal with.

But other cases would be where you have a subnet and people within
the subnet can use abbreviated addresses.  They may also be able
to use an abbreviated address (like leave off the topmost domain name)
to address sites outside their subnet.  To be proper the header
would have to include complete addresses.  But in this case, at 
least, the issues are known.  You know where all the machines
in your subnet are and the addressing issues for each one.


-- 
David Herron,  cbosgd!ukma!david, david@UKMA.BITNET.

English is a second language to me -- Baby talk was my first language.