Re: Exchange...
Don't export with Outlook do it on the Exchange server. Yes, the Exchange server can export a mailbox to .PST. Important detail: It includes deleted items which were not yet purged from the database, default 14 days, which is good for untrusty workers which just got fired and killed all their outlook content right before so noone can look what weird thing he's mailed around using the company address. I usually set this purge setting to 30 days, BTW. Mostly since people ask for mails deleted 15 days ago, I go to their Outlook and show the "recover deleted items" thing.