Set DMARC mitigation for all Mailman 2 lists

set_dmarc.py

#!/usr/bin/python
#
# Eric Searcy
# github.com/emsearcy

"""Ensure all mailing lists have DMARC mitigation enabled

Set 'DEFAULT_DMARC_MODERATION_ACTION = 1' in mm_cfg.py to set policy for future
changes.

This script is intended to be run as a bin/withlist script, i.e.

% sudo -u mailman bin/withlist -l -r set_dmarc -a
"""

from Mailman.i18n import C_

def set_dmarc(mlist, *args):
    if mlist.dmarc_moderation_action == 0:
        mlist.dmarc_moderation_action = 1
        print C_('Saving list')
        mlist.Save()
    else:
        print C_('Not saving: set to '+repr(mlist.dmarc_moderation_action))

    mlist.Unlock()