How do I make Free/Busy work in ’secure’ mode?

You must ensure that KOC is configured to connect to the DNSDomain Name System - Enables the translation of hostnames to IP addresses and provides other domain related information. name of the MailServer, rather than the IP addressAn identifier assigned to devices connected to a TCP/IP network.. This means you need to use something like mail.yourdomain.com rather than 1.2.3.4.

The other requirement is that you must import your SSL certificateSSL certificates are used to authenticate an identity on a server. into Internet Explorer so that Microsoft Outlook can properly read the certificate. Please refer to this Microsoft KB article for additional information on importing SSLSecure Sockets Layer - A protocol that ensures integral and secure communication between networks. certs into Internet Explorer.