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Sumatra Development leads the field of migrating entire calendar servers to Exchange. We migrate Oracle Calendar Server, Oracle Beehive, Apple iCalendar, and Zimbra to Microsoft Exchange keeping all meeting information and resource bookings intact. We migrate calendars server-to-server between Exchange and Office 365 while keeping meetings live and doing incremental syncs quicker than any other solution.
Thursday, October 27, 2016
Sunday, October 23, 2016
Microsoft Exchange Free/Busy
Good read: The Hybrid Mesh: why free/busy is broken and what you can do about it.
If you have any external free/busy relationships configured things can get complicated in Exchange. In truth outside of Exchange they can get almost impossible (props to Zimbra for its efforts on Exchange free/busy integration).
The short answer is that it gets really complicated (basic reason: in email systems where calendaring is an after-thought, free/busy is an after thought to the after thought).
Follow the instructions therein to have any hope of making it work,