Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site utcsstat.UUCP
Path: utzoo!utcsstat!laura
From: laura@utcsstat.UUCP (Laura Creighton)
Newsgroups: net.mail
Subject: Re: *uucp* addresses
Message-ID: <1511@utcsstat.UUCP>
Date: Sat, 3-Dec-83 01:52:29 EST
Article-I.D.: utcsstat.1511
Posted: Sat Dec  3 01:52:29 1983
Date-Received: Sat, 3-Dec-83 13:08:17 EST
References: <1432@utcsstat.UUCP>, <161@dual.UUCP>
Organization: U. of Toronto, Canada
Lines: 30

The problem with this scheme is that the theoretical site (decvax)
must tack on a full address that also includes where it is going
in the From line. Otherwise, let us suppose that somebody decides
to mail me through decvax like this:

foo!bar!baz!decvax!utzoo!utcsstat!mumble!laura

where mumble is a local machine that i have which does not talk to
decvax. Decvax gets this note, and optimises out the utzoo, and
generates a from line that is:

	From: decvax!baz!bar!foo!person

And sends it to utcsstat. Utcsstat sends it to mumble. I log into
mumble and get my mail just fine, but when I try to reply, my mailer
believes the From line -- and tries to send to decvax!baz!bar!foo!person.

This isn't going to work, because mumble and decvax don't talk. Thus
if you are generating a From line, and you are not mailing to the
site that is the final destination, you should put in the full
optimised path into your From line, right?

So decvax should be putting in a from line that reads:

	From utcsstat!decvax!baz!bar!foo!person

in the example.

Laura Creighton
utzoo!utcsstat!laura