Public bug reported: This is with mailman3: Feb 20 14:23:07 2013 (5721) Uncaught runner exception: MIMEMultipart instance has no attribute 'sender' Feb 20 14:23:07 2013 (5721) Traceback (most recent call last): File "/srv/dev/mailman/mailman/src/mailman/core/runner.py", line 145, in _one_iteration self._process_one_file(msg, msgdata) File "/srv/dev/mailman/mailman/src/mailman/core/runner.py", line 218, in _process_one_file elif msg.sender: AttributeError: MIMEMultipart instance has no attribute 'sender' Feb 20 14:23:07 2013 (5721) SHUNTING: 1361370187.943257+1fba5014964bdeae413f5280cd0f4d2cb5f7727b Feb 20 14:23:07 2013 (5721) Uncaught runner exception: Message instance has no attribute 'sender' Feb 20 14:23:07 2013 (5721) Traceback (most recent call last): File "/srv/dev/mailman/mailman/src/mailman/core/runner.py", line 145, in _one_iteration self._process_one_file(msg, msgdata) File "/srv/dev/mailman/mailman/src/mailman/core/runner.py", line 218, in _process_one_file elif msg.sender: AttributeError: Message instance has no attribute 'sender' Feb 20 14:23:08 2013 (5721) SHUNTING: 1361370187.973463+909c4b5e80497ec67e97765281e7ada77a865143 The message seems to be originating from mailman, it's a digest. I'm attaching a very simple patch that handles the case where there is no sender header. ** Affects: mailman Importance: Undecided Status: New ** Tags: easy mailman3 ** Patch added: "mailman-nosender.patch" https://bugs.launchpad.net/bugs/1130696/+attachment/3538395/+files/mailman-n... -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/1130696 Title: AttributeError: Message instance has no attribute 'sender' To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1130696/+subscriptions