Microsoft KB Archive/891862

= The message body of an SMTP message that is sent to an external recipient is truncated in Exchange Server 2003 =

Article ID: 891862

Article Last Modified on 10/25/2007

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APPLIES TO


 * Microsoft Exchange Server 2003 Enterprise Edition
 * Microsoft Exchange Server 2003 Standard Edition
 * Microsoft Windows Server 2003, Enterprise Edition
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, 64-Bit Enterprise Edition

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SYMPTOMS
When you run Microsoft Exchange Server 2003 on a Microsoft Windows Server 2003-based computer, you may experience the following symptom. The message body of a Simple Mail Transfer Protocol (SMTP) message that is sent to an external recipient is truncated.

If you perform additional investigation, you may also notice one of the following symptoms or both the following symptoms:  The message may remain in the Exchange 2003 message delivery queue with a status of Retry, and Exchange 2003 repeatedly tries to resend the message. If you perform a network monitor trace of the message traffic, you may notice that Exchange sends the following data in the middle of the DATA sequence of the message:

0D 0A 2E 0D 0A





CAUSE
This problem occurs if Exchange puts the &quot;0D 0A 2E 0D 0A&quot; data in the middle part of the DATA sequence when Exchange sends an SMTP message. The &quot;0D 0A 2E 0D 0A&quot; data corresponds to the &quot;Carriage Return Line Feed.Carriage Return Line Feed&quot; (CRLF.CRLF) combination. This combination indicates the end of the DATA command. The following sections describe how the placement of the &quot;0D 0A 2E 0D 0A&quot; data causes each symptom.

The message body is truncated
When Exchange 2003 sends the message that contains the &quot;0D 0A 2E 0D 0A&quot; data in the middle of the DATA part to a receiving SMTP server, Exchange 2003 tries to send the whole message to the receiving SMTP server. However, the receiving SMTP server does not accept data after the &quot;0D 0A 2E 0D 0A&quot; data. The receiving SMTP server then delivers the truncated message to the recipient.

The message remains in the delivery queue
When Exchange 2003 sends the message that contains the &quot;0D 0A 2E 0D 0A&quot; data in the middle of the DATA part to a receiving SMTP server, Exchange 2003 tries to send the whole message to the receiving SMTP server. However, when the receiving SMTP server receives the data that comes after the &quot;0D 0A 2E 0D 0A&quot; data, the receiving SMTP server returns a 500 error to Exchange 2003. The receiving SMTP server then resets the connection. Because the receiving SMTP server resets the connection, Exchange 2003 tries to resend the affected message.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that this article describes. Apply this hotfix only to systems that are experiencing this specific problem.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
You must be running Windows Server 2003 to install this hotfix.

Restart requirement
You do not have to restart your 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 tool in Control Panel.

Windows Server 2003, 32-bit versions
Date        Time   Version            Size    File name -- 29-Jan-2005 02:26  6.0.3790.260       44,544  Fcachdll.dll

Windows Server 2003, 64-Bit Enterprise Edition
Date        Time   Version        Size     File name      Platform

29-Jan-2005 02:23  6.0.3790.260   140,288  Fcachdll.dll   IA-64



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional query words: XADM connector cut cropped corrupted resend loop looped

Keywords: kbqfe kbhotfixserver kbbug kbfix KB891862

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