CAUSE
This problem occurs if the following conditions are true:
- You have more than one domain in your Active Directory forest.
- You are running Microsoft Windows Server 2003 Service Pack 1 (SP1) on the domain controllers in your domains.
- The users who cannot send e-mail messages to any public folders are members of the built-in Distributed COM Users security group.
This problem occurs because Exchange Server 2003 does not recognize the Distributed COM Users group. This group is added by Windows Server 2003 SP1.
When a user who is a member of the Distributed COM Users group sends an e-mail message to a public folder in Exchange Server 2003, the following actions occur:
- Exchange Server 2003 tries to match the Distributed COM Users group SID with an existing Active Directory group.
- Because more than one domain exists, Exchange Server 2003 locates more than one Distributed COM Users group.
- Exchange Server 2003 calls a function to parse an array of built-in groups to determine whether the user is a member of a built-in group. However, because the Distributed COM Users group is not contained within this array, Exchange Server 2003 cannot match the Distributed COM Users group SID with an Active Directory group.
Therefore, Exchange Server 2003 determines that the user who sends the e-mail message has an ambiguous alias. And, Exchange Server 2003 generates an NDR.
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 Microsoft 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:
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
Because of file dependencies, you must be running Microsoft Exchange Server 2003 Service Pack 2 (SP2) to apply this hotfix.
Restart requirement
You do not have to restart the computer after you apply this hotfix. However, the Microsoft Exchange Information Store service and all its dependant services are automatically stopped and then restarted when you apply this hotfix.
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 tool in Control Panel.
|
| Mdbmsg.dll | 6.5.7651.11 | 3,357,184 | 20-Mar-2006 | 20:36 | x86 |
| Store.exe | 6.5.7651.11 | 5,251,072 | 20-Mar-2006 | 21:55 | x86 |