[Mailman-Users] List adds information to sender's name

Christian F Buser luscheina at yahoo.de
Wed Sep 20 12:32:28 EDT 2017

Hello Robert Heller. On Tue, 19 Sep 2017 15:37:50 -0400 (EDT), you wrote:

> The From: munging is part of the DMARC handling (General Admin Options):
> "Replace the sender with the list address to conform with policies 
> like ADSP 
> and DMARC. It replaces the poster's address in the From: header with 
> the list 
> address and adds the poster to the Reply-To: header, but the anonymous_list 
> and Reply-To: header munging settings below take priority. If setting 
> this to 
> Yes, it is advised to set the MTA to DKIM sign all emails.
> If this is set to Wrap Message, just wrap the message in an outer message 
> From: the list with Content-Type: message/rfc822.
> (Edit from_is_list)"
> You are seeing the "Mung From" option behaviour.

Strange. Settings for the list are: 

Replace the From: header address with the list's posting address to mitigate issues stemming from the original From: domain's DMARC or similar policies.

Hide the sender of a message, replacing it with the list address (Removes From, Sender and Reply-To fields) 

Should any existing Reply-To: header found in the original message be stripped? If so, this will be done regardless of whether an explict Reply-To: header is added by Mailman or not. 

Where are replies to list messages directed? Poster is strongly recommended for most mailing lists. 

Explicit Reply-To: header. 

To my understanding, this should not cause any of the effects described in my previous message. Every list subscriber should see who wrote a message (so the From should not be replaced by the list address) and we want to keep the discussions on the list (it is a discussion list for technical issues with the MacOS operating system), so we do not select "reply to poster".

What happens, if I set the list not to add/change the Reply-To header, and still set the list address in the Explicit Reply-To header field? I guess Mailman will just ignore that field - or not? 

If there are better settings to accomplish the goals, this would be very helpful. 

Thank you, Christian   

Christian F. Buser, Hohle Gasse 6, CH-5507 Mellingen (Switzerland)      
Hilfe fuer Strassenkinder in Ghana: http://www.chance-for-children.org


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