When Microsoft Antigen 9.0 for Exchange or Microsoft Antigen 9.0 for SMTP Gateways is installed on a server that is running Microsoft Exchange Server, the following entry may be logged in the Application log:

Event ID : 100
Category : Unknown
Source :
Type : Error
Date : <DATE>
Time: <TIME>
Machine : <Computer_Name>
Description:
The description for Event ID ( 100 ) in Source ( ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: ConvertLegacyExchangeDNToSMTPAddress - GetFirstRow failed. Error code: 8007203E"

Additionally, the following entry may be logged in the Antigen ProgramLog:

Thu Mar 01 00:40:45 2007 (2408-4484), "ERROR: ConvertLegacyExchangeDNToSMTPAddress - GetFirstRow failed. Error code: 8007203E" Thu Mar 01 00:40:45 2007 (2816-4588), "ERROR: ConvertLegacyExchangeDNToSMTPAddress - GetFirstRow failed. Error code: 8007203E" Thu Mar 01 00:40:45 2007 (2408-4484), "ERROR: ConvertLegacyExchangeDNToSMTPAddress - GetFirstRow failed. Error code: 8007203E"

This problem may occur if the following conditions are true:

• You use mail-enabled public folders.
• The name of a public folder contains a special character. For example, the name of a public folder contains parenthesis as in the following example:
  (foldername)

Hotfix information

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.

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, submit a request to 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.

Prerequisites

You must have Antigen 9.0 for Exchange or Antigen 9.0 for SMTP Gateways installed before you apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released 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.
Antigen 9.0 for ExchangeAntigen 9.0 for SMTP Gateways

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

For more information about the terminology that is used to describe Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base: