Microsoft KB Archive/842528

= The whole e-mail message is attached to a non-delivery report that is returned to the sender from a Windows 2000 Server-based computer =

Article ID: 842528

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Datacenter Server

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Important This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
When a Microsoft Windows 2000-based computer sends a non-delivery report (NDR) to the sender of a large e-mail message, the whole e-mail message is attached to the non-delivery report (NDR). This problem occurs when the computer is also running Microsoft Exchange 2000 Server with Service Pack 2 or later versions.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows 2000 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
No prerequisites are required.

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.

Date        Time   Version            Size    File name -- 25-May-2004 17:51  5.0.2195.6922     325,904  Aqueue.dll 19-Jun-2003 20:05  5.0.2195.6666      67,344  Mailmsg.dll 19-Jun-2003 20:05  5.0.2195.6662      38,672  Ntfsdrv.dll 25-May-2004 17:51  5.0.2195.6922     445,200  Smtpsvc.dll

After you install this hotfix
Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

After you install this hotfix, follow these steps to create the MaxDSNSize registry entry and to enable the hotfix:  Click Start, click Run, type regedit32, and then click OK. Locate and then click the following key in the registry:

 

 On the Edit menu, point to New, click Key, add the following registry key, and then click OK:

Key name: Queuing

Class: Leave the class blank

 On the Edit menu, point to New, click DWORD Value, and then add the following registry value:

Value name: MaxDSNSize

Data type: REG_DWORD

Radix: Decimal

Value data: This value is the size limit in bytes. Messages that are larger than this value and that generate an NDR do not return attachments or full message properties.

 Restart the SMTP service for this registry change to take effect.

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

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This hotfix lets you remove the attachments from an NDR. This hotfix also lets you limit the maximum size for NDRs. If you install and then enable this hotfix, you can save server and network resources. However, there are drawbacks to this implementation of Simple Mail Transfer Protocol (SMTP) attachment removal. For example, you experience the following behaviors after you enable this hotfix:
 * The details that are used to display the notification in the preview pane are removed.
 * The sender of the message cannot use the Send Again option.

If the sender of the message tries to use the Send Again option from the NDR message, the sender of the message receives the following error message:

Unable to resend the message. The non-delivery report does not contain sufficient information about the original message. To resend the message, open it in your Sent Items folder, click the Actions menu, and click &quot;Resend this message.&quot;

However, the sender of the message cannot resend the message even by using the method in the error message.

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