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A fix has been released that changes the behavior of the "Full Mailbox Access" feature in Microsoft Exchange Server 2003. Prior to this change, any user with the “Full Mailbox Access” permission for a mailbox also had the ability to “Send As” the mailbox owner.
The “Send As” permission has been implicitly included in the “Full Mailbox Access” permission. By customer request, this behavior has now been changed to allow granting “Full Mailbox Access” without having to also allow “Send As.”
This change is implemented in the following versions of Exchange Server 2003:
Microsoft Exchange Server 2003 Service Pack 1 with a Store.exe file version of 7233.51 or higher
Microsoft Exchange Server 2003 Service Pack 2 with a Store.exe file version of 7650.23 or higher
This change is not included with Exchange Server 2003 Service Pack 2. If you have been running the Exchange Server 2003 Service Pack 1 version of Store.exe that includes this change, and you upgrade to Exchange Server 2003 Service Pack 2, you must install the Service Pack 2 version of this hotfix to retain the new behavior.
An update for Microsoft Exchange 2000 Server is available from the following Microsoft Knowledge Base article:
915358 A hotfix is available to change the behavior of the Full Mailbox Access permission in Exchange 2000 Server
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 this specific problem. 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.
No prerequisites are required.
You do not have to restart the computer after you apply the hotfix. However, the Microsoft Exchange Information Store Service and other dependant services will be restarted.
Hotfix replacement information
This hotfix does not replace any other hotfixes.
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 tool in Control Panel. Exchange Server 2003 Service Pack 1
Exchange Server 2003 Service Pack 2
There are three exceptions to the new “Send As” behavior for:
A mailbox owner
The associated external account for a mailbox
A delegate of the mailbox owner
If any of these three accounts have “Full Mailbox Access” permission, they can send as the owner without explicit "Send As" permission. A mailbox owner and the associated external account both have “Full Mailbox Access” permission by default, while delegate accounts do not.
For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:
329622 "Send on behalf" permission is not assigned to a user after you delegate access in Outlook
817903 New naming schema for Exchange Server software update packages
824684 Description of the standard terminology that is used to describe Microsoft software updates
912918 Users cannot send e-mail messages from a mobile device or from a shared mailbox in Exchange 2000 Server and in Exchange Server 2003
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.