E-mail messages from certain external domains that have several recipients only have one archived copy instead of several archived copies after you enable the BCC Journaling feature on an Exchange Server 2003 server

After you enable the BCC Journaling feature on a Microsoft Exchange Server 2003 server, you may find that e-mail messages from certain external domains only have one archived copy. These e-mail messages have one or more recipients instead of several archived copies that include all recipients. However, the original e-mail messages have more recipients in the BCC line of the e-mail messages.

This issue occurs because the original e-mail messages that have multiple BCC recipients are sent individually from the Internet. Therefore, the original e-mail messages were sent multiple times to the Exchange organization. Every time that an e-mail message is sent, only one or several recipients are included. However, the message ID remains the same for each e-mail message. When these messages are journaled, duplicate detection destroys the second and any later e-mail messages.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

This hotfix requires Microsoft Exchange Server 2003 Service Pack 2 to be installed on the server, because of file dependencies.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Registry information

After you install the hotfix, you have to change the registry entries on the server that is running Exchange Server 2003 for this hotfix to work correctly. There are two registry entries that you can use to disable duplicate detection for mailboxes or public folder.

The ParametersPrivate subkey is used to disable duplicate detection for mailboxes and the ParametersPublic subkey is used to disable duplicate detection for public folders. If you only use journaling mailbox, you only have to set the "Disable All Duplicate Detection" registry entry to 1 under the ParametersPrivate subkey. To do this, follow these steps:

1. Click Start, click Run, type Regedit, and then click OK.
2. Locate and then click the following registry subkeys:
   HKLM/SYSTEM/CurrentControlSet/Services/MSExchangeIS/ParametersPrivate
   HKLM/SYSTEM/CurrentControlSet/Services/MSExchangeIS/ParametersPublic
   Note If the ParametersPrivate subkey or the ParametersPublic subkey does not exist, create them before you do next step.
3. On the Edit menu, point to New, and then click DWORD Value.
4. Type Disable All Duplicate Detection, and then press ENTER.
5. Right-click Disable All Duplicate Detection, and then click Modify.
6. In the Edit DWORD Value dialog box, under Base, click Decimal.
7. In the Value data box, type 1 , and then click OK.
8. Exit Registry Editor.

Restart requirement

You do not have to restart the computer after you apply this hotfix. However, the following services are restarted automatically when you apply this hotfix:

• The Microsoft Exchange Information Store service
• The Microsoft Search service
• The Internet Information Services (IIS) Admin Service and all dependent services

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

For more information about the Exchange Server 2003 journaling feature, visit the following Microsoft Web site:

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.