FIX: BizTalk Server may output the wrong S/MIME information when you use BizTalk Server 2006 or the BizTalk Server SMTP Adapter with Microsoft Exchange Server 2003

You use Microsoft BizTalk Server 2006 or the Microsoft BizTalk Server 2006 R2 SMTP Adapter with Microsoft Exchange Server 2003. If the messages are encrypted in BizTalk Server, BizTalk Server may output the wrong S/MIME information in the header. Encrypted messages from BizTalk Server contain the "application/x-pkcs" reference in the MIME header and in the signed part of the encrypted message. Some outgoing encrypted messages may not be understood by systems that process those messages.

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. 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

You must have either BizTalk Server 2006 or BizTalk Server 2006 R2 installed to 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 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 item in Control Panel.

BizTalk Server 2006

BizTalk Server 2006 R2

Note Because of file dependencies, the most recent hotfix that contains these files may also contain additional files.

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

This hotfix allows you to add a registry entry under the following registry subkey to change the MIME header format: The registry entry is a DWORD value named .

The MIME header format will be changed based on the message type and on the value that you set in the registry entry. The following table lists the MIME header formats that correspond to the message type and the value of the registy entry: For more information, click the following article number to view the article in the Microsoft Knowledge Base: