Newsgroups: news.software.b
Path: utzoo!utstat!geoff
From: geoff@utstat.uucp (Geoff Collyer)
Subject: cancel propagation (was Re: Supersedes problems with rapid-fire articles)
Message-ID: <1989Aug31.034105.2177@utstat.uucp>
Organization: Statistics, U. of Toronto
References: <5200@looking.on.ca> <536@logicon.arpa> <3246@deimos.cis.ksu.edu> <1989Aug30.174430.20687@anise.acc.com>
Date: Thu, 31 Aug 89 03:41:05 GMT

RFC 850 did not contain the wording in RFC 1036 requiring that a cancel
stop spreading when it can't find its target.  We regard this
requirement as an error in 1036 (see notebook/rfcerrata for a longer
list).  relaynews never drops a cancel and creates a fake history entry
for the target if the target is not already in history.  When the
target article does arrive, it will be rejected as a duplicate.
-- 
Geoff Collyer		utzoo!utstat!geoff, geoff@utstat.toronto.edu