[Mailman-Users] All AOL unsubscribed

Mark Sapiro mark at msapiro.net
Fri Dec 12 19:16:44 CET 2014

On 12/12/2014 06:32 AM, joseph cook wrote:
> This morning all of my subscribers with aol addresses were automatically
> unsubscribed from my list.
> Why today?  I thought all the DMARC issues had been resolved in the latest
> mailman version, and it's been 8 months now since the changes at AOL.

If this were a DMARC issue it would affect multiple domains that bounce
posts From: aol.com and yahoo.com users.

This may be related, but it is different as it is only aol.com users
that are affected. Why are these user's deliveries bouncing? Look in
your MTA logs and/or the subscription disabled notices you received (3
weeks ago with default settings and bounce_notify_owner_on_disable =
Yes) for the reason.

Note that I have been seeing the following for deliveries of an aol.com
user's post back to that user.

status=bounced (host mailin-02.mx.aol.com[] said: 521 5.2.1
:  AOL will not accept delivery of this message. (in reply to end of
DATA command))

This only applies to the copy sent back to the poster. Copies (VERPed)
sent to other AOL users are accepted.

In my case, this only applies to a couple of aol.com users on one list
so I just periodically reset their bounce score manually (this can be
done among other ways be going to the user's options page from the list
admin Membership List and toggling the Mail delivery setting to Disabled
and back).

Please let us know what the bounce reason is. I have been unable to
determine (I haven't tried too hard) why the recipient's own post and
only that recipient's is rejected by AOL, but if you provide the
reason(s) for your case, there might be some mitigation we can find and

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

More information about the Mailman-Users mailing list