Xref: utzoo news.software.b:5635 news.admin:10489
Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!psuvax1!news
From: flee@dictionopolis.cs.psu.edu (Felix Lee)
Newsgroups: news.software.b,news.admin
Subject: C News history failure!  Duplicate articles.
Message-ID: <F=xd97?1@cs.psu.edu>
Date: 31 Aug 90 21:48:53 GMT
Sender: news@cs.psu.edu (Usenet)
Organization: Penn State Computer Science
Lines: 26
Nntp-Posting-Host: dictionopolis.cs.psu.edu

If you're running C News you may have received many duplicates
recently, all involving message-IDs that have more than one '@'
character in it, like:
    <9008311926.AA17938.mullin@buista.SINet.SLB.COM@ASC.SLB.COM>
(Multiple '@' characters are illegal according to RFC822.)

The problem is that dbz lowercases after the first '@' sign, but
relaynews (and others) lowercases after the last '@' sign, so the
article is never seen in the history due to case mismatch.

The fix I'm using right now is, in rfc822ize() in libcnews/case.c:
*** libcnews/case.c.orig	Wed Nov 15 12:43:18 1989
--- libcnews/case.c	Fri Aug 31 17:19:25 1990
***************
*** 109,113 ****
  		prime();
  
! 	p = strrchr(s, '@');
  	if (p == NULL)			/* no local/domain split */
  		p = "";			/* assume all local */
--- 109,113 ----
  		prime();
  
! 	p = strchr(s, '@');
  	if (p == NULL)			/* no local/domain split */
  		p = "";			/* assume all local */