I’m using Outlook 2010 and I’ve noticed that my ost-file for my Exchange account is much (much!) larger than it was when I was still using Outlook 2007.

Aside from my own mailbox, I also have the mailbox of my manager and a colleague added to Outlook as I am a delegate for them. It appears that Outlook 2010 fully caches these mailboxes now as well and not just the Calendar and Contacts.

Can I change Outlook 2010’s caching behavior back to the behavior of Outlook 2007?