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

[Christian F Buser via Mailman-Users]

Hi

On a list using Mailman 2.1.23 (on cpanel 66.0.23) I have noticed the
following effects:

Most messages appear with the author's name and in the "From:"-field in
the same form as the author has set up in his mail application. However,
some show additional information like "Realname via Listname".

I have analyzed some of those messages, and it appears that this only
happens when the author puts his own address in the "Cc:"-field (= sends
a copy to himself).  Then I have tried to double-check the behaviour and
put my own address in a message to the list.

Surprisingly, the message was delivered directly to me, but the list
never sent it to me so I could not check whether "...via listname" was
also appended to my "From:"-address. I have seen the message in the
list's archive; there it is without "...via listname".

Is this normal behaviour? Can the list be configured to not append the
"...via listname"  information to these messages? And why do I not
receive my message via the list but only directly?

Thank you for all ideas,
Christian

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

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

[Robert Heller]

At Tue, 19 Sep 2017 19:37:49 +0200 lusche...@yahoo.de wrote:

> 
> Hi
> 
> On a list using Mailman 2.1.23 (on cpanel 66.0.23) I have noticed the
> following effects:
> 
> Most messages appear with the author's name and in the "From:"-field in
> the same form as the author has set up in his mail application. However,
> some show additional information like "Realname via Listname".
> 
> I have analyzed some of those messages, and it appears that this only
> happens when the author puts his own address in the "Cc:"-field (=3D sends
> a copy to himself).  Then I have tried to double-check the behaviour and
> put my own address in a message to the list.
> 
> Surprisingly, the message was delivered directly to me, but the list
> never sent it to me so I could not check whether "...via listname" was
> also appended to my "From:"-address. I have seen the message in the
> list's archive; there it is without "...via listname".
> 
> Is this normal behaviour? Can the list be configured to not append the
> "...via listname"  information to these messages? And why do I not
> receive my message via the list but only directly?

This latter is controled by a subscriber option (last option):

"Avoid duplicate copies of messages?
Avoid duplicate copies of messages?

When you are listed explicitly in the To: or Cc: headers of a list message, 
you can opt to not receive another copy from the mailing list. Select Yes to 
avoid receiving copies from the mailing list; select No to receive copies.

If the list has member personalized messages enabled, and you elect to receive 
copies, every copy will have a X-Mailman-Copy: yes header added to it. "

Default for this option is "Yes".

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.

> 
> Thank you for all ideas,
> Christian
> 
> -- =
> 
> Christian F. Buser, Hohle Gasse 6, CH-5507 Mellingen (Switzerland)  =
> 
> Hilfe f=FCr Strassenkinder in Ghana: http://www.chance-for-children.org
> 
> .
> --
> Mailman-Users mailing list Mailman-Users@python.org
> https://mail.python.org/mailman/listinfo/mailman-users
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> Unsubscribe: https://mail.python.org/mailman/options/mailman-users/heller%4=
> 0deepsoft.com
> 
>   
>   

-- 
Robert Heller -- 978-544-6933
Deepwoods Software-- Custom Software Services
http://www.deepsoft.com/  -- Linux Administration Services
hel...@deepsoft.com   -- Webhosting Services

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

[Christian F Buser via Mailman-Users]

Hello Christian F Buser. On Tue, 19 Sep 2017 21:56:56 +0200, you wrote:

>> You are seeing the "Mung From" option behaviour.
> 
> But why does this not happen with all list messages; only with a part 
> of them? I thought it was coming from the fact that the authors cc'ed 
> themselves - but a test message where I put my own address in cc did 
> not "munge" the sender's address...

And, additionally: why does my original question have "via Mailman-Users" 
appended, while my reply (using the same mail app and the same settings) does 
not? 

And why, when I reply to a message on this list, is the reply only going to the 
author of the message and not to the list? Of course, this may be a setting of 
the Mailman-Users list, but I do not understand why anyone should do it this 
way...

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

[Mark Sapiro]

On 09/19/2017 01:28 PM, Christian F Buser via Mailman-Users wrote:
> 
> And, additionally: why does my original question have "via Mailman-Users" 
> appended, while my reply (using the same mail app and the same settings) does 
> not? 


What reply? I see only

and

(the message containing the above) in the list archives.

This occurs because you are posting From: the yahoo.de domain and
yahoo.de publishes a DMARC policy of 'reject' and this list has
dmarc_moderation_action = Mung From. (See
 and perhaps
)


> And why, when I reply to a message on this list, is the reply only going to 
> the author of the message and not to the list? Of course, this may be a 
> setting of the Mailman-Users list, but I do not understand why anyone should 
> do it this way...


It is the way this list is set. If your MUA doesn't offer a 'reply list'
action, use 'reply all'. For some of the reasoning behind this, see the
papers linked from ,
and please don't start yet another thread on this religious war.

-- 
Mark Sapiro The highway is for gamblers,
San Francisco Bay Area, Californiabetter use your sense - B. Dylan
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Re: [Mailman-Users] List adds information to sender's name

[Mark Sapiro]

On 09/19/2017 10:37 AM, Christian F Buser via Mailman-Users wrote:
> 
> Surprisingly, the message was delivered directly to me, but the list
> never sent it to me so I could not check whether "...via listname" was
> also appended to my "From:"-address. I have seen the message in the
> list's archive; there it is without "...via listname".


From: header munging is not done in archives or digests because it isn't
necessary there. (Also see
)


> Is this normal behaviour? Can the list be configured to not append the
> "...via listname"  information to these messages?


In short, it can but we won't because it would cause your posts to be
rejected by every recipient whose ISP honors DMARC.


> And why do I not
> receive my message via the list but only directly?


Because your list option "Avoid duplicate copies of messages?" for this
list is set to Yes (the default). If you don't like that, go
to, log in and
change it.

-- 
Mark Sapiro The highway is for gamblers,
San Francisco Bay Area, Californiabetter use your sense - B. Dylan
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