We have had a handful of instances where corporate iPhone users will be syncing Calendar/Contacts/etc in their iTunes settings, and we would like to prevent this.

Unfortunately, when they sync their empty home Outlook calendars it then overwrites everything in their iPhone calendar. This has the unpleasant side effect up "updating" Exchange and wiping out every meeting they have. Luckily, our backups have bailed us out in each case - there seems to be no recovering from it any other way as the data is gone.

We prefer to allow our users to continue loading media on their phones, which we believe requires iTunes.

Is there a way, through Exchange ActiveSync or iOS mobile management, to prevent this from happening?