[SAC] [OSGeo] #2506: mailman: unsolicited mass subscription attempts

[OSGeo]

#2506: mailman: unsolicited mass subscription attempts
---------------------------+------------------------
 Reporter:  neteler        |       Owner:  sac@…
     Type:  task           |      Status:  new
 Priority:  blocker        |   Milestone:  Unplanned
Component:  Systems Admin  |  Resolution:
 Keywords:  Mailing Lists  |
---------------------------+------------------------

Comment (by neteler):

 Found some hints:

  * https://mail.python.org/pipermail/mailman-
 users/2016-January/080302.html
  * https://www.ralfj.de/blog/2018/06/02/mailman-subscription-spam.html

 Seems we need (if we don't have yet) to activate some
 `SUBSCRIBE_FORM_SECRET` secret.

 Anyone?

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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/2506#comment:1>
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