I have installed Owncloud 8.2.2 on a shared hosting environment. Now the
hoster offers letsencrypt certificates for his customers. I installed
these certificates correctly, and I can access all things on my webspace
by browser correctly. Also sync to Android devices is working properly.
On all my Lightning installations (which is the calendar add-on of
Thunderbird), I get error messages and cannot connect to my calendars
via caldav links.
Where do I have to look for a solution? Does
Lightning import letsencrypt-certificates in a wrong way? Are some
Owncloud config files to be changed?
I asked the same questions in the Lightning forum, but did not yet receive satisfying answers…