[Mailman-Users] Emails from yahoo members, are getting rejected by yahoo, "Service Unavailable".

[Jim Popovitch]

On Mon, Apr 14, 2014 at 3:16 PM, Lindsay Haisley <fmouse at fmp.com> wrote:
> So what is being said here?

When a yahoo poster sends an email to your list, that email is
reflected to the rest of the other subscribers.  Those other
subscribers may or may not check yahoo's dmarc policy before accepting
your list email.  If they do reject your list message, then that
equals 1 mailman bounce.  After a few posts from yahoo members, the
bounce scores increase and the other subscribers are unsubscribed.

-Jim P.