In Cached Exchange mode, Outlook will by default only synchronise mail from a configured time period. If there are items older than this Outlook displays this message at the bottom of the folder. It also doesn't include them in search results.
I've tried creating a "syncronization filter" (under properties on a folder), but this seems only to be able to further restrict sync.
Is there a way to set a folder to always download all items from the server into the OST file?
Gmail has this feature.