@morrow without logs this will be hard to track down. can you ask your administrator to open up a support case for this?
The Z-Merge framework allows you to connect your Zarafa server with any other system dealing with the similar kind of information.
Using Z-Merge all changes on the systems are propagated to all connected servers in real-time. This way you have the same data available on every system at any moment.
Supported systems: Zarafa, SugarCRM
Calendar entries are visible independently in all systems. If an item is created, modified or deleted this information is immediately transmitted to the other systems.
All systems continue to operate with their own, native datastorages. Z-Merge only transports events and data between the systems.
Please use the Zarafa Forums for questions: