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

Theodore Ts'o <tytso@mit.edu> Sat, 12 April 2014 23:02 UTC

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Date: Sat, 12 Apr 2014 19:02:00 -0400
From: Theodore Ts'o <tytso@mit.edu>
To: Miles Fidelman <mfidelman@meetinghouse.net>
Subject: Re: DMARC from the perspective of the listadmin of a bunch of SMALL community lists
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On Sat, Apr 12, 2014 at 03:56:14PM -0400, Miles Fidelman wrote:
> 
> We (really I) support perhaps 2 dozen small email lists, for a bunch of
> community groups (PTOs, churches, neighborhood groups) - mostly the legacy
> of previously running a small hosting firm, and still having the machines
> sitting in a data center.  The kinds of groups with lots of non-technical
> users who have email accounts on Yahoo, hotmail, AOL, Comcast, and such.
> The lists range in size from tiny (5 person boards of directors) to maybe
> 1000 (high school parents).

Why don't you just respond by sending an e-mail to each of the
affected users, telling them that they will unfortunately no longer be
able to participate in the mailing list due to the choices of their
mail provider, and that if they want to continue to receiving e-mail,
to consider setting up new e-mail account with some other provider
such as gmail -- and then cc postmaster@yahoo.com on the message.

That's how I plan to deal with things....

					- Ted