The originator of a message from an Internet host cannot reply when the originator receives a reply message from an Outlook user in an Exchange Server 2003 organization

Consider the following scenario. A user sends a plain text message from an Internet host that does not include a reply-to field in the P2 header. The message is routed through a Lotus Domino server to a user in a Microsoft Exchange Server 2003 organization by using the Microsoft Exchange Connector for Lotus Notes. The user in the Exchange Server 2003 organization uses Microsoft Outlook to reply to the message. In this scenario, the originator of the message cannot reply to the reply message.

This problem does not occur if the original message is sent in plain-text format and includes a reply-to field. Additionally, this problem does not occur if the original message is sent in HTML format.

Note The P2 part of a message is a header that describes the message and how the receiving message transfer agent (MTA) should deal with the message.

To resolve this problem, install the latest version of the Microsoft Exchange Server 2003 Connector for Lotus Notes. To obtain the Microsoft Exchange Server 2003 Connector for Lotus Notes, visit the Microsoft Download Center.

The following file is available for download from the Microsoft Download Center:

Download the NotesCon.exe package now.
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base: Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

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

This problem was corrected in Microsoft Exchange Server 2003 Connector for Lotus Notes, version 06.05.7830.