Xref: utzoo comp.mail.misc:4463 comp.mail.uucp:5614 comp.mail.sendmail:2479
Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!rutgers!att!linac!midway!gargoyle!chinet!les
From: les@chinet.chi.il.us (Leslie Mikesell)
Newsgroups: comp.mail.misc,comp.mail.uucp,comp.mail.sendmail
Subject: Re: Which headers may Sendmail re-write?
Message-ID: <1990Dec07.180618.16744@chinet.chi.il.us>
Date: 7 Dec 90 18:06:18 GMT
References: <1CE00001.p376wj@tbomb.ice.com>
Organization: Chinet - Public Access UNIX
Lines: 20

In article <1CE00001.p376wj@tbomb.ice.com> time@tbomb.ice.com writes:

>As an aside, my mail server recently tossed sendmail away for smail3.
>This was because 30% of the mail I sent bounced going out, and 40%
>of the replies never made it back. I am sure that had the sendmail
>been configured a little more the problem could have been fixed. BUT
>smail3 fixed the problem right away. It left the headers alone!

Even smail3 will mung the the header lines by prepending its own
uucp name if they are already in "!" notation.  I ripped this part
out because someone is likely to reverse user@domain into RFC976'ish
domain!user when they pass the message off to uucp mailers.  This
would be reasonable (since reasonable uucp mailers treat the
two forms interchangably) except that it encourages sites along the
path to prepend their own name, and not all of them do.  Thus the
final recipient is likely to see x!y!domain!user where x is neither
a neighbor nor a fully qualified domain.

Les Mikesell
  les@chinet.chi.il.us