An incorrect address is displayed when an external user replies to a message that was routed from the Internet to an Exchange 2003 server by using the Domino messaging system

Consider the following scenario:

• You configure the Microsoft Exchange Server 2003 Connector for Lotus Notes to connect to a Lotus Domino messaging system.
• The Domino messaging system receives an e-mail message from the Internet. Additionally, the Domino messaging system serves as the primary incoming SMTP gateway.
• The message is delivered to a Microsoft Exchange Server 2003 user by using the Microsoft Exchange Server 2003 Connector for Lotus Notes.
• The Exchange Server user replies to all recipients of the message. Additionally, the Exchange Server user adds a second external user to the message.

In this scenario, the return address of the message for the first external user is encapsulated as a Notes address that resembles the following address: Therefore, the second external user cannot reply to the first external user.

To resolve this problem, install version 06.05.7917 of the Microsoft Exchange Server 2003 Connector for Lotus Notes or a later version of the Microsoft Exchange Server 2003 Connector for Lotus Notes. To obtain version 06.05.7917 of the Microsoft Exchange Server 2003 Connector for Lotus Notes or a later version of the Microsoft Exchange Server 2003 Connector for Lotus Notes, visit the following Microsoft Web site:

Hotfix information

After you apply the hotfix, you must enable the hotfix. To do this, you must edit the LME-NOTES section of the Exchconn.ini file to add a new HandleSMTPSender field. If the HandleSMTPSender field is not present, or if the value is set to 0, the default product behavior is observed. You must change the value of the HandleSMTPSender field to 1 to enable the hotfix.

After you enable the hotfix, the return address of the message is converted to SMTP format. In other words, as soon as a message arrives on an Exchange server through the Microsoft Exchange Server 2003 Connector for Lotus Notes, the Exchange server handles all additional routing of the message instead of sending the message back through the connector to be routed by the Domino messaging system.

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.

Prerequisites

The following applications must be installed before you install version 06.05.7917 of the Microsoft Exchange Server 2003 Connector for Lotus Notes or a later version of the Microsoft Exchange Server 2003 Connector for Lotus Notes:

• Microsoft Exchange Server 2003 Service Pack 2 (SP2) For more information, click the following article number to view the article in the Microsoft Knowledge Base:
  836993 � How to obtain the latest service packs for Exchange Server 2003
• Lotus Notes Client 6.x

Restart requirement

You do not have to restart the computer after you apply this hotfix. However, the following services are automatically stopped and then restarted when you apply this hotfix:

• The Microsoft Exchange Connectivity Controller service
• The Microsoft Exchange Connector for Lotus Notes service and all dependent services

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.

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

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.