
pst files are prone to corruption when used in this manner. pst file from over a network, this is unsupported, and Microsoft advises against it, as. pst files from another location the user needs to be able to access the files directly over a network from their mail client. pst files, users can free storage space on their mailservers. The size of these files no longer counts against the size of the mailbox used by moving files from a server mailbox to. This is an essential feature of Microsoft Outlook. ost files to maintain off-line availability of the items. pst files are used to store archived items and the. Microsoft Outlook stores these items in a personal-storage-table (.pst) or off-line-storage-table (.ost) files that are located on the local computer.

In Microsoft Exchange Server, the messages, the calendar, and other data items are delivered to and stored on the server.
