Hi, we are running our calendarserver for the mac clients on an ubuntu 14.04 LTS maschine. Unfortunately calendar.app as well as safari no longer connects to calendarserver which uses SSLv3 for encryption wich is no longer considered as a safe connection method and should be replaced by tls. because there is no configuration option in any config file one have to patch /usr/lib/python2.7/dist-packages/twistedcaldav/stdconfig.py in line 254 and replace the SSLv3_METHOD with the TLSv1_METHOD before the # Please fix this - make it an configurable option in calendarserver! Thanks. Frank