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Re: [PHP] test/list DMARC issues





> Date: Monday, January 23, 2017 18:21:49 +0100
> From: "Christoph M. Becker" <cmbecker69@xxxxxx>
>
> 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.



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