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List:       php-general
Subject:    Re: [PHP] test/list DMARC issues
From:       "Christoph M. Becker" <cmbecker69 () gmx ! de>
Date:       2017-01-25 10:49:50
Message-ID: 426b73fc-96b2-fad1-55b1-79020f246ce6 () gmx ! de
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On 23.01.2017 at 19:14, Richard wrote:

>> Date: Monday, January 23, 2017 18:21:49 +0100
>> From: "Christoph M. Becker" <cmbecker69@gmx.de>
>>
>> On 22.01.2017 at 19:53, Richard wrote:
>>
>>> One of the issues that some people may be encountering is that this
>>> mailing list's software doesn't handle things correctly for DMARC.
>>> If your provider's mail server is configured to enforce DMARC,
>>> messages from places that have "reject" set, e.g., yahoo:
>>>
>>>   _dmarc.yahoo.com.	1800	IN	TXT	"v=DMARC1\; p=reject\;
>>>
>>> will be rejected by your mail server. In a case like this, this
>>> means that anyone with an @yahoo... address who posts to this list
>>> will cause a bounce for recipient list member whose mail server is
>>> enforcing DMARC. Depending on the configuration of the mailing list
>>> software and the frequency of postings by @yahoo people the
>>> (passive/recipient) list member may get a probe or may get dropped
>>> from the list.
>>>
>>> The long and short is that this list's software needs to be updated
>>> to something that conforms with current mail standards and
>>> practices. I have tried to raise this with the owners of various
>>> of the php lists, but have gotten no response or action.
>>
>> Have you already reported this issue to the php-webmaster and/or
>> systems mailing lists?  Mentioning it on php-general goes likely
>> unnoticed by the folks who could fix it.
> 
> Yes, as I indicated:
> 
>    > I have tried to raise this with the owners of various
>    > of the php lists
> 
> to the "-owners" addresses. [Looking back i see that I sent to the
> -internals and -db owners, but not the -general owners. Nothing has
> been done on those and I suspect they will change/update their
> mailing list software as a common effort for all the lists.]
> 
> Since the probes don't get rejected I haven't gotten kicked off the
> php lists, yet. 
> 
> This is an issue that anyone who runs a mailing list should be aware
> of by now. Yahoo has had their DMARC setting at "reject" for more
> than a year. I have heard that gmail is enforcing DMARC (I haven't
> had a chance to confirm this), Yahoo does and other major providers
> are starting to too, so increasingly list mail will bounce unless the
> list owners update their software.

Forwarding to more appropriate lists.

-- 
Christoph M. Becker


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