[clue] Yahoo DMARC breaks mailing lists.

[David L. Anselmi]

David L. Anselmi wrote:
> A number of CLUE subscribers had their accounts disabled due to a change in Yahoo DMARC policy.  See:
>
> http://www.pcworld.com/article/2141120/yahoo-email-antispoofing-policy-breaks-mailing-lists.html

So I wonder.  A Yahoo user posted a reply, which is held for moderation as expected.  The difference 
with this latest message is that it has a DKIM header, which the message that started this nonsense 
did not.

If I let that message through, and the DKIM validates, then it won't bounce.  If I had time to look 
I could predict whether it would validate based on what the signature covers (the article above says 
that mailing lists change things that break the signature but that claim is probably worth verifying 
for our case).

Or I could figure out how to watch for bounces, let the message through, and see what happens.

It's amazing how much having a job gets in the way. :-)

Dave