It is reported that Moodle email notification via forum posts, has not been working as of 13 Oct. We sincerely apologize for the inconvenience it may cause. It’s under investigation and we will take care of it as soon as possible.
If you have any questions and concerns, please access our online form
https://helpdesk.cis.kit.ac.jp/
and make an inquiry via the link “Get assistance for general IT problems and questions”.