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Path: utzoo!mnetor!seismo!cmcl2!yale!husc6!harvard!adelie!cdx39!jc
From: jc@cdx39.UUCP (John Chambers)
Newsgroups: comp.mail.misc
Subject: Re: Can mail be accepted where it isn't sent?
Message-ID: <541@cdx39.UUCP>
Date: Fri, 9-Jan-87 10:38:22 EST
Article-I.D.: cdx39.541
Posted: Fri Jan  9 10:38:22 1987
Date-Received: Sat, 10-Jan-87 22:43:22 EST
References: <6794@ut-sally.UUCP>
Organization: Codex Corp, a division of Motorola; Canton, MA, USA
Lines: 26
Summary: Easy: uux foo!rmail joe  1) He received a copy of someone else's posting, but by email.
> 2) He sent a personal reply in response.
> 3) His response ended up posted in the newsgroup.
> 
> Could a 3rd party send someone a message with an edited header that 
> would route a reply to some other location? In short, what gives?!?

This isn't at all difficult.  What I'd do is put an article into a
scratch file, edit it a bit to make it say whatever I liked, and then
type:
	uux foo!rmail joe