Index all mailboxes, emails and attachments Enable super users from AD group search against all mailboxes Preview Exchange emails and attachments directly from search user interface via SharePoint Business Connectivity services.
SharePoint 2010 BCS Mailbox connector for Microsoft Exchange empowers you search
private mailboxes via SharePoint and FAST Search.
SharePoint 2010 BCS Mailbox connector for Microsoft Exchange allow you:
Exchange OOB connector for SharePoint 2010 search and FAST Search for SharePoint.
Unfortunately this connector limited to Exchange public folder only.
Please, make sure you download following dependencies: