Hi,Friends. I want to access Exchange public Folder from https protocol. First : I go to IIS manager, Right click on Default WebSite and On properties dialog set Public Enable SSL My client is Java Client(JDK1.4.09), when I use a sample test souce: It pops an exception. javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection? It sounds that authentication can not pass. What should I do on the Exchange public folder Setting? Any help would be greatly accepted