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Date:      Wed, 14 May 1997 13:38:04 -0700 (PDT)
From:      "Jonathan M. Bresler" <jmb>
To:        joelh@gnu.ai.mit.edu
Cc:        jmb@FreeBSD.ORG, p.richards@elsevier.co.uk, chat@FreeBSD.ORG
Subject:   Re: Reply-to addresses
Message-ID:  <199705142038.NAA03146@hub.freebsd.org>
In-Reply-To: <199705140207.WAA26714@diazepam.gnu.ai.mit.edu> from "Joel Ray Holveck" at May 13, 97 10:07:47 pm

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Joel Ray Holveck wrote:
> 
> 
> >	majorodmo cannot do the auto-pruning, by the time the messag
> >	gets to majordomo, it has already been sent to all recipients
> >	sendmail therefore must do the pruning.  as far as i know, 
> >	sendmail is not able to do this.  
> 
> sendmail here will properly prune mailing lists if they are expanded
> in /etc/aliases (or its include file).  But I thought that
	
	but the aliases are not fully expanded by sendmail.
	majorodmo does the full expansion for each list individually.
	by then sendmail has sent the message to each person listed
	and to each majordomo list.  its now too late to prune.
	
> chat@freebsd.org was a majordomo robot which exploded the message and
> sent it out, in which case it could look at the To: and Cc: headers
> anyway.
> 
> If sendmail's expanding the aliases, then it can prune.  I'll send you
> our sendmail.cf if it'll help.
> 
> >	even so, it would fail to handle .forward files (on other hosts)
> >	and perhaps remote /etc/aliases as well (depending upon the
> >	mail transfer agent at the far end and its configuration)
> 
> Yes...ish...
> 
> Used to, I would actually send and receive mail at
> gnu.ai.mit.edu!detlev!joelh, detlev being my home box that would dial
> up to an ISP and then UUCP in the mail.  But my From: and Reply-To:
> lines would still mark joelh@gnu.ai.mit.edu, which would be .forwarded
> to me.  Also, I would subscribe to mailing lists as joelh@gnu.  The
> bottom line there, is that anybody sending me mail would send it to
> the same address, so pruning could occour.  I would think that a fair

	i dont understand how pruning could happen :( if i send
	mail to both joelh@gnu.ai.mit.edu and hackers@freebsd.org,
	a list to which joelh@gnu.ai.mit.edu is subscribed, sendmail
	sends one copy of hte message directly to joelh@gnu.ai.mit.edu
	and another to hackers@freebsd.org.  hackers@freebsd.org
	then sends a copy to all subscribers including hackers@freebsd.org.
	how can pruning work in such a situation?
jmb



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