Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!uwm.edu!lll-winken!ames!haven!boingo.med.jhu.edu!aplcen!wb3ffv!fallst!tkevans
From: tkevans@fallst.UUCP (Tim Evans)
Newsgroups: comp.mail.sendmail
Subject: Problem with sendmail
Message-ID: <1914@fallst.UUCP>
Date: 6 Feb 91 01:16:25 GMT
Organization: Fallston, MD
Lines: 35

I am having a problem with sendmail apparently mis-writing the
From: header, although I'm not sure which machine is doing the
mis-writing.  A Sun ("Soaf1") and a '386 running SCO Xenix 2.3.2
("oss753") are involved.  oss753 is designated "mailhost" in
Soaf1's sendmail.cf; oss753 has a UUCP link to the outside
world.

Mail coming into Soaf1 from the outside (UUCP) world has a
Return-Path: header like this:

Return-Path: <system1!system2!user@oss753>

However, the Fron: header is:

From: system2!user@oss753

In other words, "system1!" is being chopped off the front of the
address.  When replying to such messages, they are sent off to
"system2!user@oss753".  Since oss753 only knows about the outside
UUCP world through its UUCP link to "system1" the message never
gets any further that oss753.

Question(s) is/are:  Is Soaf1 rewriting headers incorrectly?
What is the sendmail.cf rule to force oss753 to bounce everything
it can't deliver to "system1" (the UUCP link)?  Which sendmail.cf
gets fixed, and how?

(I'll be glad to e-mail copies of the two sendmail.cf's to anyone
who wants to help, but don't want to post them.)

Thanks.
-- 
UUCP:		{rutgers|ames|uunet}!mimsy!woodb!fallst!tkevans
INTERNET:	tkevans%fallst@wb3ffv.ampr.org
Tim Evans	2201 Brookhaven Ct, Fallston, MD 21047