Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site ucbvax.UUCP
Path: utzoo!watmath!clyde!burl!mgnetp!ihnp4!zehntel!dual!ucbvax!kre
From: kre@ucbvax.UUCP (Robert Elz)
Newsgroups: net.news.b
Subject: Re: article duplications
Message-ID: <1160@ucbvax.UUCP>
Date: Fri, 22-Jun-84 10:10:29 EDT
Article-I.D.: ucbvax.1160
Posted: Fri Jun 22 10:10:29 1984
Date-Received: Wed, 27-Jun-84 01:31:54 EDT
References: <481@denelcor.UUCP>, <2041@rlgvax.UUCP>
Organization: U.C. Berkeley
Lines: 52

From denelcor!lmc:
>I've recently been wondering why we are getting what seems to me to be a
>lot of repeat messages. I haven't much heard anyone else complaining, so I
>suspect I've missed a bug fix somewhere along the line. Anyway, it seems the
>most of the problems stem from having a message originate from a site that
>supports more than one domain. I received a message (one of many) twice from
>bbncca, once with the ARPA domain and once via UUCP.
>
>I've also received pairs of articles via UUCP and SUN (the Australian
>network). Has anyone else seen this and/or fixed it? It doesn't seem to
>hard to imagine a fix to the history mechanism that scrubs the domain from
>the entry, but it seems a little kludgey. Any words?

From rglvax!guy:
>It's not just kludgy, it's incorrect.  There could be a site called
>"frobozz.UUCP" and a different site called "frobozz.ARPA".
>
>Unfortunately, not all sites in the (unofficial) domain
>UUCP know how to send mail to sites in the (official) domain ARPA yet, so
>sites will let themselves be known by the same name in both domains.

Guy's explanation might be right for UUCP/ARPA, but that's not
what is causing this problem if you get duplicate articles from
Australian sites.  There are no sites in Australia which use
the UUCP domain in news articles (at least, not in the recent past,
this might have been used a long time ago).

My guess is that there is some site somewhere, that is altering
the domain name part of the message id, illegally.

Please, administrators (or anyone else who reads this group)
if you come across any duplicate articles from Australian sites
that exhibit this problem (that is, that appear to have been
sent from the UUCP domain as well as OZ (or SUN)) please mail (MAIL!)
me the headers of the articles.  Eventually, from that info, I
should be able to isolate bad sites from the combination of routes taken.

You can recognize Australian news by the OZ domain (or SUN from some
of the more conservative sites - SUN is going away as quickly as
we can make it happen), or by finding "mulga" anywhere in the
path the news arrived on.

Thanks for your co-operation.

Robert Elz				decvax!mulga!kre  (or ucbvax!kre)

ps: I know that neither "OZ" nor "SUN" are "official" domain names,
so please don't flame at me about that.  Its not going to change,
and nothing that you can say will make it.

pps: This news was not sent from Australia, so a UUCP domain is
OK here!