courier-to-mailman3.py

This is our current version trying to communicate between courier and mailman3.

Changes

First change is changing the name to match what I have on the server.
Second change is to have the #! path hopefully pointing in the right place.
Which I screwed up. I think I was typing in the wrong window.
- It's not failing on command line.
Still failing, let's get some logging.
- Moved logging initialization, and included print statements