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Article View: comp.mail.misc
Article #2525

Re: Which headers may Sendmail re-write?

#2525
From: Leslie Mikesell
Date: Wed, 26 Dec 1990 16:01
32 lines
1786 bytes
In article <1990Dec22.180814.10207@vmp.com> oc@vmp.com (Orlan Cannon) writes:

>The answer is to talk to your UUCP neighbors.  Ask what kind of
>MTA or MUA they use.  Mung the headers accordingly.  Don't make
>a universal rule of it.

No, it's more complicated than this if the neighbor site forwards on
to anyone else.   While I consider a rewrite from user@domain to
domain!user to be a harmless inversion, making things work with
real-dumb mailx requires rewriting to site!domain!user (where site
is the uucp name of the machine doing the rewriting).  This does
serious damage to anything that is forwarded on another hop.  To
make things even more complicated, the forwarding may be done by
an alias or forward file on the apparent destination machine.

>We've got plenty of universal rules that work just fine.  Local
>exceptions are *OK*.  As long as *you and your neighbor* know
>what you're doing.

*And anyone your neighbor might forward to.*

>Talking about it on the net doesn't help.

It might.

>Talking with your local UUCP neighbor does.  UUNET, are you listening?

In fact uunet will give you your choice of munged or unmunged headers
but the choice made for the first hop may not be correct for the next.  

Les Mikesell
  les@chinet.chi.il.us
Technical Details
Message-ID: <1990Dec26.160148.19573@chinet.chi.il.us>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!samsung!olivea!orc!inews!iwarp.intel.com!gargoyle!chinet!les
References: <1990Dec18.182210.12980@Think.COM> <27710D99.140E@tct.uucp> <1990Dec22.180814.10207@vmp.com>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!samsung!olivea!orc!inews!iwarp.intel.com!gargoyle!chinet!les
From: les@chinet.chi.il.us (Leslie Mikesell)
Newsgroups: comp.mail.misc
Subject: Re: Which headers may Sendmail re-write?
Message-ID: <1990Dec26.160148.19573@chinet.chi.il.us>
Date: 26 Dec 90 16:01:48 GMT
References: <1990Dec18.182210.12980@Think.COM> <27710D99.140E@tct.uucp> <1990Dec22.180814.10207@vmp.com>
Organization: Chinet - Public Access UNIX
Lines: 32