In an Exchange Server 2007 environment, you cannot reply directly to an e-mail message if the P2 header of the e-mail message contains data that is formatted incorrectly

In an Exchange Server 2007 environment, you cannot reply directly to an e-mail message if the P2 header of the e-mail message contains data that is formatted incorrectly

Article ID : 953175
Last Review : May 28, 2008
Revision : 1.0
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SYMPTOMS

Consider the following scenario. In a Microsoft Exchange Server 2007 environment, you receive an e-mail message from a person in an external organization. The P2 header of the e-mail message contains data that is formatted incorrectly. In this scenario, you cannot determine who sent the e-mail message. Additionally, you cannot reply directly to the e-mail message. If the From header field in the P2 header contains the e-mail address of the sender, Exchange 2007 does not correctly display the sender’s name in the e-mail message.

For example, the From header field in the P2 header is as follows.

From: someone@example.com <someone@example.com>

In this case, Exchange 2007 displays the sender’s name as follows:

someone@ [example.com someone@example.com]

When you try to determine who sent the e-mail message, you may think that someone@ is the sender’s name and that example.com someone@example.com is the sender’s e-mail address.

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CAUSE

This behavior occurs because the From header field is formatted incorrectly according to Request for Comments (RFC) 2822.

Note The incorrect format is as follows.

From: someone@example.com <someone@example.com>

The correct format is as follows.

From: someone@example.com <someone@example.com>

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WORKAROUND

To work around this behavior, use one of the following methods.

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Method 1

When you reply to the e-mail message, correct the e-mail address before you send the e-mail message.

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Method 2

Ask the developers of the application that sends the e-mail message to correct the code so that the From header field is formatted correctly according to RFC 2822. The correct format is as follows.

From: someone@example.com <someone@example.com>

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STATUS

This behavior is by design.

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MORE INFORMATION

The P2 header contains the e-mail addresses for the e-mail message as defined in RFC 822. The P2 header contains the following header fields:

• From
• Reply To
• Sender

For more information, visit the following Internet Engineering Task Force (IETF) Web site:

http://www.ietf.org/rfc/rfc2822.txt?number=2822 (http://www.ietf.org/rfc/rfc2822.txt?number=2822)

Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

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APPLIES TO
• Microsoft Exchange Server 2007 Standard Edition
• Microsoft Exchange Server 2007 Enterprise Edition

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Keywords: 
kbexpertiseinter kbtshoot kbprb KB953175

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