Permissions on a target mailbox store may be overwritten when you use the dial tone database recovery procedure and the Mail Merge task in Exchange Server 2003 (923117)

Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry

SYMPTOMS

Consider the following scenario. You use the dial tone database recovery procedure in Microsoft Exchange Server 2003. You use the Mailbox Merge task to update the recovered mailboxes with content that was created during the restore and recovery procedure.

After you use the Mailbox Merge task, the folder permissions on the target mailbox store may be overwritten with permissions that exist on the source mailbox store.

Note For more information about the dial tone database recovery procedure, visit the following Microsoft Web site:

http://www.microsoft.com/technet/prodtechnol/exchange/guides/UseE2k3RecStorGrps/92ae44a2-034d-478a-9ea0-261dde5b8ff1.mspx?mfr=true

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Exchange Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

You must have Microsoft Exchange Server 2003 Service Pack 1 installed to apply this hotfix.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfix.

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.

File name	Version	Date	Time	Size
Maildsmx.dll	6.5.7651.37	18-Jul-2006	16:44	14,647,296

MORE INFORMATION

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

By default, the overwrite permissions feature is enabled when you merge your production database to a dial tone database. However, you can use the KeepTargetFolderACL DWORD value to enable or to disable the overwrite permissions feature.

The KeepTargetFolderACL DWORD value is located in the following registry subkey:

HKEY_CURRENT_USER\Microsoft\Exchange\MSExchangeAdmin\RecoverMailboxName

If the KeepTargetFolderACL DWORD value does not exist, or exists but the value is 0, the merge process overwrites the permissions on the target folder. However, if the KeepTargetFolderACL value exists and has a non-zero value (such as 1), the permissions on the target folder are retained.

For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

817903 New naming schema for Exchange Server software update packages