as mentioned here Cool Solutions - Let’s Encrypt I installed letsencrypt without problems. My problem now is, I want to access my kopano calendars via caldav over port 8443 and accessing https://my.server.com:8443/caldav/mailbox sends back the standard UCS certificate, and not the one I registered via letsencrypt.
Is there an additional variable like the letsencrypt/services/apache2 for caldav? Or how to achieve that my UCS sends back also the letsencrypt certificate for requests to the address mentioned above?
Thanks for your help!