[ mailman-Feature Requests-1460796 ] Add option to remove Sender header

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Thu Mar 30 17:48:12 CEST 2006


Feature Requests item #1460796, was opened at 2006-03-29 12:04
Message generated for change (Comment added) made by xpl0re
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Myke Olson (xpl0re)
Assigned to: Nobody/Anonymous (nobody)
Summary: Add option to remove Sender header

Initial Comment:
When sending messages through mailman with Postfix, it
adds a new header called "Sender" in addition to the
Errors-To and Return-Path headers.

Outlook (probably mistakenly) sees the Sender header
and treats it like gold.  All messages show up in the
user's mailbox as from list-bounces on behalf of
therealperson.  What's worse is that the rules/filters
will only work on the list-bounces part and not
therealperson.

If we could selectively turn off the addition of the
Sender header (and be able to keep the other two), then
we should still be able to use bounces but have Outlook
be able to filter messages.

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>Comment By: Myke Olson (xpl0re)
Date: 2006-03-30 10:48

Message:
Logged In: YES 
user_id=689092

Thanks for that posting.  The hack to comment that line out
definetly fixes the "problem".  While I definetly agree that
putting in fixes to correct behavior in MS products sucks,
in this case, it would be great to just have it as an option
so we don't have to have the hacked code.

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Comment By: Richard Barrett (ppsys)
Date: 2006-03-30 09:57

Message:
Logged In: YES 
user_id=75166

RFC2822 (Para 3.6.2. - Originator fields) would suggest that simply not using 
the Sender: header when Mailman is the agent responsible for the actual 
transmission of the message is a breach of the RFC. 

The problem with the behaviour of Outlook is discussed in the Mailman FAQ 
here:
http://www.python.org/cgi-bin/faqw-mm.py?req=show&file=faq02.003.htp

A suggested code change which cosmetically improves the Outlook 
presentation by changing the Sender: header value from the listname-
bounces alias to the listname alias is described there.

Paranthetically: 

The Error-to: header is deprecated and only inserted for backward 
compatibilty with old/broken MTAs.

The Return-path is not  a header that travels with the message and is known 
as a trace field. It is mandatory and normally inserted at the start of the 
message, as a header, by the final SMTP delivery MTA and is the value of the 
SMTP envelope sender.

As an aside, Outlook 2003 appears to allow filtering on the contents of From: 
header wihtout any problems (as opposed to the From field displayed on the 
GUI) and this does not involve the contents of the Sender: header.


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