[SAC] [OSGeo] #2757: Possible postfix issues since osgeo6 upgrade

[OSGeo]

#2757: Possible postfix issues since osgeo6 upgrade
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 Reporter:  robe           |      Owner:  sac@…
     Type:  task           |     Status:  new
 Priority:  normal         |  Milestone:  Sysadmin Contract 2022-II
Component:  Systems Admin  |   Keywords:
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 Sicne the osgeo6 upgrade from stretch to buster, some people have been
 complaining of

 For some reason mailer-daemon is sending delivery notifications to mailing
 lists (not all of them), as if the mailing list was a Sender
 Mailer daemon is not on the list so owner sends it a notice of its message
 being moderated

 One example is geoforall-europe and treasurer.

 Haven't checked yet to see what could be the issue here

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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/2757>
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