i tried to fix this with chown list:list /var/log/mailman3/mailman-suite.log
but then other parts break: ``` Traceback (most recent call last): File "manage.py", line 10, in <module> execute_from_command_line(sys.argv) File "/usr/lib/python2.7/dist- packages/django/core/management/__init__.py", line 364, in execute_from_command_line utility.execute() File "/usr/lib/python2.7/dist- packages/django/core/management/__init__.py", line 338, in execute django.setup() File "/usr/lib/python2.7/dist-packages/django/__init__.py", line 22, in setup configure_logging(settings.LOGGING_CONFIG, settings.LOGGING) File "/usr/lib/python2.7/dist-packages/django/utils/log.py", line 75, in configure_logging logging_config_func(logging_settings) File "/usr/lib/python2.7/logging/config.py", line 794, in dictConfig dictConfigClass(config).configure() File "/usr/lib/python2.7/logging/config.py", line 576, in configure '%r: %s' % (name, e)) ValueError: Unable to configure handler 'file': [Errno 13] Permission denied: '/var/log/mailman3/mailman-suite.log' ``` I think that 2 different users try to write to that logfile. A workaround (i don't like) is to give o+rw permission to that file. Mainlman 3.1.1 from stretch-backports