in mailman.app.config , there is function _expand_paths(self) which contains : queue_dir = category.queue_dir this results in queue_dir to get added to self.path and thus when ensure_directories_exist() is being called in config.py , it make a directory var/queue removing "queue_dir = category.queue_dir " will not allow the directory to be formed. Since i am new to mailman, can you please guide me , how to push this change to mailman 3 code ? -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/1095422 Title: Non-queue runners should not create var/queue/* directories To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1095422/+subscriptions