Hello,

Since a few days we get an error response from our automated membership script.

We use the following code to control the membership for some lists:

def mailinglist_manage(list_address, members):
     """
     make sure all 'members' are present on the list and no remove 
everyone else

     list_address : mail address of mailing list to manage
     addresses    : mail address that are supposed to be on the list
     """
     print("[*] update subscriptions for {}".format(list_address))

     ml = mmc.get_list(list_address)

     # make sure we dont spam users
     ml.settings['send_welcome_message'] = False
     ml.settings.save()

     addresses = set(members.keys())

     ml_members = ml.members
     ml_addresses = set((x.address.__str__() for x in ml_members))

     for addr in ml_addresses - addresses:
         print("unsubscribe {} from {}".format(addr, list_address))
         ml.unsubscribe(addr)

     for addr in addresses - ml_addresses:
         print("subscribe {} to {}".format(addr, list_address))
         ml.subscribe(addr, members[addr],
                 pre_verified=True, pre_confirmed=True, 
pre_approved=True)

Since Tuesday without any update performed by us we get the following error from the script when it's running:

Traceback (most recent call last):
   File "./mail_user_control.py", line 423, in <module>
     mailinglist_manage("XXX@EXAMPLE.COM", members)
   File "./mail_user_control.py", line 412, in mailinglist_manage
     pre_verified=True, pre_confirmed=True, pre_approved=True)
   File 
"/root/.local/lib/python3.6/site-packages/mailmanclient/restobjects/mailinglist.py", 
line 339, in subscribe
     response, content = self._connection.call('members', data)
   File 
"/root/.local/lib/python3.6/site-packages/mailmanclient/restbase/connection.py", 
line 112, in call
     error_msg, response, None)
urllib.error.HTTPError: HTTP Error 400: Invalid Parameter "subscriber": 
.

If you have an idea why that code now returns this. I would be thankful.

regards

Jacob Sievert