Microsoft KB Archive/820735

= Users receive duplicate messages =

Article ID: 820735

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Exchange 2000 Enterprise Server
 * Microsoft Exchange 2000 Server Standard Edition

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SYMPTOMS
E-mail messages that are sent to users and distribution groups are delivered in duplicate.



CAUSE
This problem may occur if both of the following conditions are true:
 * The e-mail message is addressed to a distribution group and to a recipient who is a member of that distribution group
 * The message is addressed to a distribution group that is expanded externally (beyond its own routing group). For example, the message is sent from a Microsoft Exchange 2000 Server mailbox to a distribution group that is expanded to an organization that is using Microsoft Exchange Server 5.5.

This problem may also occur if the original message requires content conversion. For example, the problem may occur if the local recipient has their default message format set to the Rich Text Format (RTF) but the distribution group has its default message format set to plain text.



RESOLUTION
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 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:

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.

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 --  15-Oct-2003  23:31  6.0.6521.0      3,915,776  Cdoex.dll 15-Oct-2003 23:25  6.0.6521.0        851,968  Davex.dll 15-Oct-2003 23:25  6.0.6521.0         53,248  Davexpc.dll 15-Oct-2003 23:22  6.0.6521.0        131,072  Drviis.dll 15-Oct-2003 23:22  6.0.6521.0        577,536  Dsaccess.dll 15-Oct-2003 22:33  6.0.6521.0        184,320  Dscmsg.dll 15-Oct-2003 22:33  6.0.6521.0        962,560  Emsmdb32.dll 15-Oct-2003 23:25  6.0.6521.0      2,179,072  Ese.dll 15-Oct-2003 23:25  6.0.6521.0         40,960  Eseperf.dll 09-Sep-2003 02:18                      6,991  Eseperf.hxx 15-Oct-2003 23:25                    391,634  Eseperf.ini 15-Oct-2003 23:31  6.0.6521.0      3,575,808  Excdo.dll 15-Oct-2003 23:22  6.0.6521.0        262,144  Exmime.dll 15-Oct-2003 23:25  6.0.6521.0        143,360  Exodbesh.dll 15-Oct-2003 23:25  6.0.6521.0         57,344  Exodbpc.dll 15-Oct-2003 23:25  6.0.6521.0        200,704  Exodbprx.dll 15-Oct-2003 23:25  6.0.6521.0      2,179,072  Exoledb.dll 15-Oct-2003 23:20  6.0.6521.0         81,920  Exosal.dll 15-Oct-2003 23:25  6.0.6521.0        307,200  Exprox.dll 15-Oct-2003 22:36  6.0.6521.0        143,360  Exschema.exe 15-Oct-2003 23:25  6.0.6521.0        315,392  Exsmtp.dll 15-Oct-2003 22:38  6.0.6521.0        675,840  Exwform.dll 15-Oct-2003 23:23  6.0.6521.0         40,960  Jcb.dll 15-Oct-2003 22:18  6.0.6521.0        745,472  Mapi32.dll 15-Oct-2003 22:13  6.0.6521.0         49,152  Mdbevent.dll 15-Oct-2003 22:30  6.0.6521.0      2,285,568  Mdbmsg.dll 15-Oct-2003 22:15  6.0.6521.0         32,768  Mdbrole.dll 15-Oct-2003 23:23  6.0.6521.0         24,576  Mdbtask.dll 15-Oct-2003 23:19  6.0.6521.0         94,208  Peexch50.dll 15-Oct-2003 23:20  6.0.6521.0        397,312  Phatcat.dll 15-Oct-2003 23:23  6.0.6521.0        532,480  Reapi.dll 15-Oct-2003 23:25  6.0.6521.0        311,296  Resvc.dll 15-Oct-2003 23:21  6.0.6521.0      4,657,152  Store.exe 15-Oct-2003 22:38  6.0.6521.0      3,735,552  Wmtemplates.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section of this article.

