User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:126.96.36.199) Gecko/20080311 Firefox/188.8.131.52 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:184.108.40.206pre) Gecko/20080326 Sunbird/0.8 I cannot see how to import a CA root certificate. Firefox offers this automatically given the correct MIME type, and Thunderbird allows one to import a certificate in Preferences/Advanced, but Sunbird seems to have no mechanism to do this. Reproducible: Always Steps to Reproduce: 1. Connect to calendar using SSL 2. Sunbird displays "unknown certificate authority" 3. I can use a copy of libnssckbi.so that I compiled with our certificate authority, but that will not work on Windows and is somewhat complicated to maintain.