Update filters & package requirements

filter-rules.py

@@ -25,6 +25,7 @@ BLOCK_KEYWORDS = [
     'prefer not to receive',
     'prefer not to see',
     'rather not receive',
+    'remove from this list',
     'Samsung SDS America',
     'sidekickopen',
     'subscription preferences',
@@ -246,7 +247,8 @@ def filter_message(self, message):
 
     # junk known spam headers
     if (get_header('X-Spam-Flag' == 'YES', headers)
-            or int(get_header('X-MS-Exchange-Organization-SCL', headers)) >= 5):
+            or int(get_header('X-MS-Exchange-Organization-SCL', headers)) >= 5
+            or get_header('X-Mailgun-List-Address', headers)):
         self._log_result(message, 'junking spam with known header')
         move_message(message, 'Junk Email')
         return