Calendar for Postfix

I looking to implement a calendar for postfix [IMAP] but I can not find anything that would replicate among all the clients, I have read about Cyrus but I can not find any instructions for Postfix, Cyrus, Sals, MySQL, posfixadmin and roundcube. Has anybody been able to get Cyus working with Postfix or provice any suggestion for a IMAP calendar that would work also with Outlook.

Thank you in acvance,