Package: mailman3 Version: 3.1.1 System: debian stretch-backports This is a system with exim4 as local mailserver On creating a new mailinglist i get following error in the logs:
``` File "/usr/lib/python3.5/wsgiref/handlers.py", line 137, in run self.result = application(self.environ, self.start_response) File "/usr/lib/python3/dist- packages/mailman/database/transaction.py", line 50, in wrapper rtn = function(*args, **kws) File "/usr/lib/python3/dist-packages/mailman/rest/wsgiapp.py", line 214, in __call__ return super().__call__(environ, start_response) File "falcon/api.py", line 215, in falcon.api.API.__call__ (falcon/api.c:2571) File "falcon/api.py", line 189, in falcon.api.API.__call__ (falcon/api.c:2190) File "/usr/lib/python3/dist-packages/mailman/rest/lists.py", line 245, in on_post mlist = create_list(**validator(request)) File "/usr/lib/python3/dist-packages/mailman/app/lifecycle.py", line 100, in create_list call_name(config.mta.incoming).create(mlist) File "/usr/lib/python3/dist-packages/mailman/mta/postfix.py", line 66, in create self.regenerate() File "/usr/lib/python3/dist-packages/mailman/mta/postfix.py", line 103, in regenerate raise RuntimeError(NL.join(errors)) RuntimeError: command failure: /usr/sbin/postmap /var/lib/mailman3/data/postfix_lmtp, 127, Key has expired command failure: /usr/sbin/postmap /var/lib/mailman3/data/postfix_domains, 127, Key has expired Mar 01 21:34:02 2018 (11537) 127.0.0.1 - - "POST /3.0/lists HTTP/1.1" 500 59 ``` This means that it tries to create postfix aliases but postfix is not installed. /usr/sbin/postmap does not exist. A workaround is to create that file (empty) with execute permissions. A proper fix would be that /usr/lib/python3/dist-packages/mailman/mta/postfix.py will not be called in the first place.
