I recently upgraded our BES server to SP6. While everything else seems to be working fine, I have found a problem with calendars. When a user creates a new appointment on their Blackberry calendar, it is not transferred to their Exchange mailbox. If they invite someone to the appointment, the recipient also doesn't get the invitation.
Synchronizing works fine the other way (calendar appointments created in Outlook are transferred to the blackberry fine).
We have two exchange servers - Exchange 2003 and Exchange 2007. The problem seems to affect users on both servers.
Not sure where to start here - any help would be appreciated.