I have a bit of a problem with a user who has deleted some emails from their Dumpster (via Outlook) and I need to recover them. Unfortunately, I have mis-understood how SIR works and it wasn't enabled on that users mailbox at the time they deleted the emails.
I do have a full backup at the beginning of the week and differential backups each night. Can these be used to restore Exchange to a specific point in time (10 seconds after the emails were sent) so I can recover these items before they were deleted from the dumpster?