[SAC] [OSGeo] #3011: Write recommendation for mailing list configuration regarding DKIM/DMARC/SPF

[OSGeo]

#3011: Write recommendation for mailing list configuration regarding
DKIM/DMARC/SPF
------------------------------+------------------------
 Reporter:  strk              |       Owner:  sac@…
     Type:  task              |      Status:  new
 Priority:  normal            |   Milestone:  Unplanned
Component:  SysAdmin/Mailman  |  Resolution:
 Keywords:  dkim, spf, dmarc  |
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Comment (by strk):

 Configuration for avoiding to to set a "sender" seem to be per-list only,
 with the only global configuration allowing or forbidding the avoidance:
 {{{
 # RFC 2822 suggests that not adding a Sender header when Mailman is the
 agent
 # responsible for the actual transmission is a breach of the RFC.
 However,
 # some MUAs (notably Outlook) tend to display the Sender header instead of
 the
 # From details, confusing users and actually losing the original sender
 when
 # forwarding mail.  By setting this variable to Yes, list owners will be
 # given the option to avoid setting this header.
 ALLOW_SENDER_OVERRIDES = Yes
 }}}
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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/3011#comment:18>
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