Re: DMARC and yahoo

"John Levine" <johnl@taugh.com> Sun, 20 April 2014 17:19 UTC

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Date: 20 Apr 2014 17:18:52 -0000
Message-ID: <20140420171852.50632.qmail@joyce.lan>
From: "John Levine" <johnl@taugh.com>
To: ietf@ietf.org
Subject: Re: DMARC and yahoo
In-Reply-To: <C8A2B0B4-5FA4-4BFE-AECE-C61667ECF2FB@secure-endpoints.com>
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>I took a different approach.  I left the bounce detection on but switched all @yahoo.com accounts to digest mode. 
>Since the mail now comes from the list instead of the @yahoo.com sender there are no rejections.   Not a perfect
>solution but it prevents harm to non-@yahoo.com list participants.

I don't see how that helps.  The problems occur when a list message
with "From: blah@yahoo.com" is delivered to a Gmail or Hotmail or
Comcast address which follows the DMARC advice and bounces the
message.

R's,
John