Re: DMARC from the perspective of the listadmin of a bunch of SMALL community lists

"John Levine" <johnl@taugh.com> Sun, 13 April 2014 19:55 UTC

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Date: 13 Apr 2014 19:54:50 -0000
Message-ID: <20140413195450.24828.qmail@joyce.lan>
From: "John Levine" <johnl@taugh.com>
To: ietf@ietf.org
Subject: Re: DMARC from the perspective of the listadmin of a bunch of SMALL community lists
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In article <534A9901.8040907@dcrocker.net> you write:
>On 4/12/2014 3:23 PM, Brian E Carpenter wrote:
>> Could somebody explain what that means and whether it can be used to
>> mitigate the current issue? Or are substantial changes needed
>> in the fundamentals of DMARC?
> ...

>In other words, it means that the receiving mail system whitelisted a 
>mailing list.

Yeah.  The problem is that as we are now seeing from the Yahoo fiasco,
receivers don't whitelist mailing lists, leading to all sorts of
damage to mail that has been working perfectly well and that, if my
experience is any guide, recipients want a lot more than the bulk
blasts that p=reject was designed to handle.

R's,
John