Article ID: 239427
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IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/256986/EN-US/ )Description of the Microsoft Windows Registry
This article provides detailed instructions on how to implement Message Journaling, a new feature introduced in Microsoft Exchange Server version 5.5 Service Pack 1, on an Exchange Server computer or computers.
To enable Message Journaling throughout an Exchange Server site or organization, each server must be running Microsoft Exchange Server version 5.5 Service Pack 1 or later, and each server must be configured for Message Journaling.
You can configure Message Journaling at the server level, site level, or organization level. If you configure it at the site level, a message that is sent between two sites in the organization is saved twice: once at the sending site and once at the receiving site.
You enable and configure message journaling using Microsoft Windows NT Server registry settings. To enable Message Journaling, you must complete the following steps on each server. Each step is described in detail later in this document.
(http://support.microsoft.com/kb/198783/EN-US/ )XCON: Receipt Behavior with Message Journaling
(http://support.microsoft.com/kb/199325/EN-US/ )XCON: MTA Size Restrictions Affect Local Delivery with Message Journaling
Specifying Where Messages Are SavedSpecify where messages are saved by adding a registry key with the Distinguished Name (DN) of a mailbox, public folder, or custom recipient.
To view the Distinguished Name of a recipient:
WARNING: If you use the raw mode of the Exchange Server Administrator program (admin /r) incorrectly, serious problems may occur that may require you to reinstall Microsoft Windows NT Server, Microsoft Exchange Server, or both. Microsoft cannot guarantee that problems that result from using raw mode incorrectly can be solved. Use raw mode at your own risk.
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
NOTE: Regedit.exe is recommended for editing the registry entries in this article.
Specifying Message Journaling at the Server, Site, or Organization LevelYou can specify that Message Journaling be done at the server level, site level, or organization level. By default, Message Journaling is done at the organization level.
Routing Internet Mail Service Messages Through the Private Information StoreNOTE: The following steps are not necessary if you do not have an Internet Mail Service on this server.
To be copied correctly, all Internet Mail Service messages must be routed through the private information store.
Routing Local Messages Through the MTATo be copied correctly, local messages must be routed through the MTA instead of being delivered directly by the private information store.
SecurityThere are two primary security issues with Message Journaling:
You must secure the mailbox, public folder, or custom recipient that receives the message copies. Hide this recipient from the directory. If the recipient is a public folder, on the Permissions tab for the public folder, set the Roles for the default user to Contributor, and then click to clear all permissions check boxes except Create items, and click to select the Create Items check box.
Copies of encrypted messages are saved the same way other messages are, but they are not decrypted.
PerformanceMessage Journaling adds processing overhead to the Exchange Server computer and increases network traffic. Use Windows NT Performance Monitor after you enable Message Journaling to ensure that your system can handle the additional load. You may need to upgrade your hardware or balance system resources.
NOTE: The performance enhancements in the MTA in these service packs help balance the processing overhead of Message Journaling.
The mailbox, public folder, or custom recipient that receives the message copies must always be available, or message journaling fails. Depending on message volume, you may need to set up the mailbox or public folder on a dedicated Exchange Server computer within the site.