[Mailman-Users] List DMARC compliance reconfiguration

Andy Cravens acravens at uen.org
Mon Nov 4 10:42:02 EST 2019

Using mailman 2.1.26.  I’m auditing the lists on my server for DMARC compliance I’ve found several list configs that do not have the DMARC action set to “munge_from.”  It appears I need to edit all those list and fix that setting.  I’ve also noticed that in mm_cfg.py there is no setting for REMOVE_DMIM_HEADERS.  I just wanted to verify the proper order for fixing these issues.  Seems like I need to correct the munge_from setting for all the affected lists and them as quickly as possible add REMOVE_DKIM_HEADERS = 1 to mm_cfg.py and restart.  It appears that which ever task I complete first some messages will be undeliverable until both changes are complete.  Maybe it would be best to stop mailman, complete both changes and then restart?  Just looking for the best way to do this.

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