[Mailman-Users] Re: Mailing List Bounce Issues

[Thomas Coradeschi via Mailman-Users]

> On 30 Jan 2021, at 5:22 PM, steve lund  wrote:
> 
> Mark,
> 
> On Fri, Jan 29, 2021 at 10:36 AM Mark Sapiro  wrote:
> 
>> On 1/29/21 5:38 AM, steve lund wrote:
>>> 
>>> ...And everyone else who replied, yes, this does indeed look like a DMARC
>>> issue. I looked at the help pages and it looks like some things can be
>>> changed but from what I gather any changes would likely affect
>>> functionality for the users.
>>> 
>>> I am a member of a different list that munged the FROM header to the list
>>> address with the down side that ALL replies had to go back through the
>> list
>>> even if it was specific to one individual. Not a great experience just to
>>> pick up a few members who had AOL email domains.
>> 
>> 
>> Is this a Mailman list? Both Mailman 2.1 and Mailman 3 take pains to
>> create Munged From messages which exhibit the same behavior for 'reply'
>> and 'reply-all' as non-munged messages. Here's what we say:
>> 
> 
> I don't know if it was a Mailman list or not. This was 2-3 years ago. I
> looked at a current list message and there is no indication of the list
> sender. Is there any way that I can send a query to get this information?

Look at the message headers - if it’s a mailman list, you should find

X-Mailman-Version: xx.yy.zz


—
Tom Coradeschi
tjc...@icloud.com

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[Mailman-Users] Re: Mailing List Bounce Issues

[steve lund]

Tom,

Good point. It has been a LONG time since I wandered into attempting to
read email headers. Here is a sample header from the list that recently had
the domain related bounce issue Let me know if you see anything that is
mis-configured. BTW, the ISP is going to switch to the current Mailman
version 3 fairly soon. I don't know if this is going to help  the situation
or not.


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[Mailman-Users] Re: Mailing List Bounce Issues

[Mark Sapiro]

On 1/31/21 6:42 PM, steve lund wrote:
> Tom,
> 
> Good point. It has been a LONG time since I wandered into attempting to
> read email headers. Here is a sample header from the list that recently had
> the domain related bounce issue Let me know if you see anything that is
> mis-configured. BTW, the ISP is going to switch to the current Mailman
> version 3 fairly soon. I don't know if this is going to help  the situation
> or not.


Probably not.



> Delivered-To: slund...@gmail.com

This message was to you

> Return-Path: 

from the list


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> client-ip=2600:3c02::f03c:91ff:fe71:4634;
> Authentication-Results: mx.google.com;
>dkim=pass header.i=@msinglinks.org header.s=201912 header.b=bz9GJB1w;
>arc=fail (body hash mismatch);
>spf=pass (google.com: domain of
> msing-ride-boun...@lists.msinglinks.org designates
> 2600:3c02::f03c:91ff:fe71:4634 as permitted sender) smtp.mailfrom=
> msing-ride-boun...@lists.msinglinks.org;
>dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=
> lists.msinglinks.org

And gmail says it passes spf, dkim and DMARC.


> To: MSing Links Ride List 


and was sent to the list


> X-Content-Filtered-By: Mailman/MimeDel 2.1.34

and was content filtered by Mailman.


> X-Mailman-Version: 2.1.34

Mailman version is 2.1.34 (the latest 2.1 version)



> From: Donald Belk via MSing-ride 
> Reply-To: Donald Belk 

And the From: is munged by the list and the original From: added to
Repty-To:


So this list is Munging From: headers, and if that was the case when the
bounces occurred (maybe 3 weeks before the unsubscribes), the bounces
probably weren't for DMARC reasons.


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