An e-mail message is in disorder and is unreadable in an Exchange Server 2007 environment

In a Microsoft Exchange Server 2007 environment, an e-mail message is in disorder and is unreadable. However, the same e-mail message is readable if it is received by a user in a Microsoft Exchange Server 2003 environment.

This problem occurs because the boundary conditions of the e-mail message are set to have more than 70 characters. For example, the message header contains the following text: This problem may also occur if space characters and carriage return/line feed (CR/LF) characters increase the boundary conditions to more than 70 characters. For example, the message header contains the following text:In Exchange Server 2007, the boundary conditions are always treated as invalid. Therefore, the "multipart/" element is treated as invalid and is then converted to a "text/plain" element.

To resolve this problem in Exchange Server 2007 Service Pack 1, install Update Rollup 1 for Exchange Server 2007 Service Pack 1. For more information about Update Rollup 1 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic: To resolve this problem in the release version of Exchange Server 2007, install Update Rollup 6 for Exchange Server 2007. For more information about Update Rollup 6 for Exchange Server 2007, see the following Exchange Help topic: For more information about how to install the latest Exchange service pack or update rollup, see the following Exchange Help topic:

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

For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base: For more information about RFC 2046, visit the following Web site: