On Apr 8, 2014, at 7:16 PM, Scott Kitterman <[email protected]> wrote:

> On Tuesday, April 08, 2014 16:45:52 Matt Simerson wrote:
>> On Apr 8, 2014, at 4:35 PM, Scott Kitterman <[email protected]> wrote:
>>> On April 8, 2014 7:28:53 PM EDT, Matt Simerson <[email protected]> wrote:
>>>> On Apr 8, 2014, at 4:11 PM, Scott Kitterman <[email protected]>
>>>> 
>>>> wrote:
>>>>> Okay. I'll bite.
>>>>> 
>>>>> For what I think of as a normal mailing list that uses its own mail
>>>>> from and does DKIM signature breaking things like modifying the subject
>>>>> line or adding a footer to the message with unsubscribe or list archive
>>>>> information, what's the canonical solution to interoperating in a DMARC
>>>>> with p=reject enabled world and where is it documented?
>>>> 
>>>> http://dmarc.org/faq.html#s_3
>>>> 
>>>>    • take ownership of the email, by removing the DKIM signature and
>>>> 
>>>> putting your own as well as changing the from header in the email to
>>>> contain an email address within your mailing list domain.
>>> 
>>> In other words: don't be a mailing list.
>> 
>> That's one perspective. Another is:
>> 
>>      cd path/to/ezmlm/list; rm prefix  text/trailer addtrailer
>> 
>> and go on with being a mailing list.
> 
> Right.  So then we train people that the "right" way to figure out to 
> unsubscribe or locate the list archive is to look in the message headers for 
> the correct header field (unsigned by the domain in From, BTW) and then 
> copy/paste whatever's there into their browser.
> 
> Works for me just fine.  Actual non-technical users, not so much.  

It's been 30 years Scott. We're *still* training users to find that message 
trailer at the bottom and click on the unsubscribe link. Their attention span 
rarely survives a full screen of text, so they practically never see the 
trailer. Instead they *reply* to an email with a "how do I unsubscribe" 
question, placing the answer they seek even further down the screen than 
they'll ever notice.

Obviously I've made my choice, but you too can make yours and keep putting that 
seldom-if-ever read trailer on your list messages. You just need to take 
ownership of the message, as described in the FAQ.

Matt


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