[Mailman-Users] Sender modification

Lloyd F. Tennison lloyd_tennison at whoever.com
Wed May 12 03:48:12 CEST 2004

I'm going to ask why it is there at all?  I just checked over 50 messages 
and the only ones I have with the Sender and the Errors headers are 
those from Mailman.  If there are to be RFC compliant - why does no 
one else have them? (Errors I am guessing are for Mailman - but since 
it does not read that line...)

(Even my tech bulletins from Microsoft, Apple and Symantec do not 
have them.)

From:           	Richard Barrett <r.barrett at openinfo.co.uk>
Subject:        	Re: [Mailman-Users] Sender modification
Date sent:      	Tue, 11 May 2004 17:17:23 +0100
To:             	cgross at 2blc.com
Copies to:      	Mailman-Users at python.org

> Right near the end of  
> http://www.python.org/cgi-bin/faqw-mm.py?req=show&file=faq02.003.htp  
> you will find details of a hack to the MM source code for MM 2.1.x  
> which changes the Sender: header value from listname-bounces to  
> listname, while leaving the envelope sender as listname-bounces for  
> bounce handling. The line number referenced in the FAQ is approximate;  
> depending on what exact version of MM 2.1.x source you are running you  
> may find the line to be changed a few either way of the one stipulated.
> This is an attempt to alleviate the pain that some users (and list  
> admins) appear to experience with the conflation of From: and Sender:  
> headers in the displayed From field of the web GUI of some versions of  
> some Microsoft MUAs. If that is your problem, this hack might help.
> With well behaved MTAs that send bounce messages back to the envelope  
> sender this change should be safe but if it blows up in your face  
> because a badly behaved MTA sends a bounce back to the Sender header,  
> which is now the primary list address, and hence to the list itself, it  
> is on your head; you have been warned.
> That said, the change is one-line-simple and easy to reverse if things  
> start to go pear shaped.
> On 11 May 2004, at 16:17, Brad Knowles wrote:
> > At 4:54 PM +0200 2004/05/11, cedric gross wrote:
> >
> >>  Is there a way to change the sender of mail (i.e.  
> >> mailman-user-bounce) with
> >>  something more humain like : The Mailman User list
> >>  <mailman-users at python.org) ?
> >
> > 	You can go throughout the Mailman code and change listname-bounces to  
> > whatever you want, but this is not recommended.
> >
> > 	Bounces will actually come back to this address, so whatever you do,  
> > you have to be able to distinguish between bounces and original  
> > submissions.  But if you had a violent opposition to the string  
> > "-bounces" appearing anywhere, you could change this to be "-fred" or  
> > whatever else you may want.
> >
> >>  Or must I do it by canonical rewriting ?
> >
> > 	That would be an extremely bad idea.  You would be destroying vital  
> > information encoded in the envelope sender address, which could not be  
> > recovered once a bounce occurred.
> >
> > 	See Mailman FAQ 2.2 at  
> > <http://www.python.org/cgi-bin/faqw-mm.py?req=show&file=faq02.002.htp>  
> > and FAW 2.3 at  
> > <http://www.python.org/cgi-bin/faqw-mm.py? 
> > req=show&file=faq02.003.htp>.
> >
> > -- 
> > Brad Knowles, <brad.knowles at skynet.be>
> >
> > "They that can give up essential liberty to obtain a little temporary
> > safety deserve neither liberty nor safety."
> >     -Benjamin Franklin, Historical Review of Pennsylvania.
> >
> >   SAGE member since 1995.  See <http://www.sage.org/> for more info.
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Lloyd F. Tennison
lloyd_tennison at whoever.com

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