Although Purdue IT’s Exchange server is configured to hold permanently deleted items in a dumpster for 30 days after being deleted, it is not possible to do an individual mailbox restore to a previous point in time. So, even though items deleted within 30 days can be recovered, folder structures and original locations of deleted items cannot be restored. The Education IT team recommends that users periodically make a complete backup of their Exchange data by exporting to an Outlook Data File (.PST). The process for doing this on a Windows computer is outlined below.
How to back up data in Outlook 2013 (PDF)
–Education IT