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

[Lindsay Haisley]

On Tue, 2014-04-15 at 12:38 -0400, Jim Popovitch wrote:
> Just to be clear, all those domains (other than yahoo.com) will bounce
> email to you if your list sends out an email from a yahoo.com
> subscriber.  It's not the case that you need to prevent all those
> other domains (AOL/MSN/etc) from posting, just don't allow yahoo.com
> addresses to post to the list.

So just to be clear, putting a damper on this at this point requires
_only_ that posts from yahoo.com be blocked from posting to a list.  Is
this correct?  This can be done by selectively unsubscribing (or
moderating) current yahoo.com users and adding "^.*@yahoo\.com" to the
ban_list of addresses banned from membership going forward.  Should some
other ESP start publishing advisory DMARC records then said ESP would
need to be added to the ban_list as well.

Am I correct in this?

-- 
Lindsay Haisley       | "UNIX is user-friendly, it just
FMP Computer Services |       chooses its friends."
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