You need full mailbox access to change mailbox rights after you install Exchange 2000 SP3

After you install Microsoft Exchange 2000 Server Service Pack 3 (SP3), a user who previously had the correct rights to change mailbox rights in Active Directory Users and Computers may no longer be able to change the mailbox rights. The user may also receive a "catastrophic error" error message when he or she tries to add an account to mailbox permissions.

With Exchange 2000 Server Service Pack 2 (SP2), a user must have three rights to change mailbox rights in Active Directory User and computers. These rights are:

�	View only administrator on the administrative group
�	Administer information store granted on the MBX store
�	Write permissions granted on the MBX store

After you install Exchange 2000 SP3, a user who has these rights may no longer be able to change the mailbox rights.

Cumulative rollup information

To resolve this problem, obtain the March 2003 Exchange 2000 Server Post-Service Pack 3 (SP3) Rollup. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

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 2000 Server 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: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.

Prerequisite

Because of file dependencies, this update requires Microsoft Exchange 2000 Server Service Pack 3 (SP3). For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

File information

Component: Information store

The English version of this hotfix has the file attributes (or later) 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 tool in Control Panel.

 Date          Time    Version      Size        File name
 ----------------------------------------------------------
 23-OCT-2002   22:22   6.0.6349.0   3,915,776   Cdoex.dll
 23-OCT-2002   22:22   6.0.6349.0   3,567,616   Excdo.dll
 23-OCT-2002   22:09   6.0.6349.0     258,048   Exmime.dll
 23-OCT-2002   22:12   6.0.6349.0   1,691,648   Exoledb.dll
 23-OCT-2002   21:06   6.0.6349.0      32,768   Mdbrole.dll
 23-OCT-2002   22:08   6.0.6349.0   4,587,520   Store.exe
				

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

After you install this hotfix, make sure that you enable the Read msExchMailboxSecuirtyDescriptior property and the Write msExchMailboxSecurityDescriptor property. To check the property, follow these steps:

1.	Open Active Directory Users and Computers.
2.	Right-click the OU of the users being modified, and then select Delegate Control.
3.	Click Next.
4.	Add the user or the group for which you want to modify mailbox permissions, and then click Next.
5.	Select the Only the following objects in the folder option button, scroll down the list, check the User Objects box, and then click Next.
6.	Verify that the General and Property Specific boxes have been selected.
7.	In the Permissions box, click to select the Read attribute.
8.	Scroll down in the same box, and then click to select Read msExchMailboxSecurityDescriptor and Write msExchMailboxSecurityDescriptor.
9.	Click Next, and then click Finish