As reported by Visvanath in https://moodle.org/mod/forum/discuss.php?d=218656
Let the Tracker autolinking use HTTPS by default
The issue should be even addressed in the moodlelinks filter to jump directly into HTTPS:
Need of a separate issue, addressing this one the HTTP Redirect stuff i.e. just the Tracker deployment?
http to https redirects have been setup now, so this issue is resolved, however the service unavailable message was due to issues with default server conf for the new upgraded tracker system. This should now be rectified.
question: I'm a watcher as well as a partecipant but I've not received any notification about your comment id 195050 yet. Is that correct at this stage?
Matthew, thanks for your prompt fix.
Matteo, I've not received any email notifications since the tracker was upgraded.
so there is room for another new issue unless (that's the reason for my question) the lack of notification is a known part fo the upgrade process e.g. reconfiguring notifications is the last task of the complex set of procedures planned for this major upgrade.
Let's keep two eyes (your+mine) on that!
For the record, the lack of email notifications is reported in MDLSITE-2071