Best Practices Guide

Eliminate .PST file use for secure email retention in Exchange 2007

Exchange administrators must maintain the security and availability of their Exchange 2007 organization's mailbox data. Spam, viruses, hackers and equipment problems are considered serious threats to Exchange mailboxes. But another, often over-looked, culprit deserves some attention. Allowing users to retain email messages in .PST files may be the most harmful threat to Exchange Server 2007 mailbox data.

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This best practices guide explains how .PST files pose a threat to Exchange 2007 mailboxes, how to prevent .PST file storage, move these files to an Exchange information store and how to lock down Microsoft Outlook 2007 to keep users from accessing .PST files. Plus, you'll learn how to set up messaging records management (MRM) in your Exchange 2007 environment for secure message retention.


 Home: Introduction
 Part 1: Why are .PST files a security threat to Exchange Server mailboxes?
 Part 2: Create a group policy to prevent .PST file storage in Exchange 2007
 Part 3: Migrating .PST files to an Exchange Server information store
 Part 4: Lock down Microsoft Outlook 2007 to prevent .PST file access
 Part 5: Set up messaging records management (MRM) in Exchange 2007

Brien M. Posey, MCSE
Brien M. Posey, MCSE, is a five-time recipient of Microsoft's Most Valuable Professional award for his work with Exchange Server, Windows Server, Internet Information Services (IIS), and File Systems and Storage. Brien has served as CIO for a nationwide chain of hospitals and was once responsible for the Department of Information Management at Fort Knox. As a freelance technical writer, Brien has written for Microsoft, TechTarget, CNET, ZDNet, MSD2D, Relevant Technologies and other technology companies. You can visit Brien's personal website at

This was first published in December 2008

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