Microsoft KB Archive/216162

= XFOR: Exchange IMS Can Suppress Generation of a Delivery Receipt =

Article ID: 216162

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition

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This article was previously published under Q216162



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
The Internet Mail Service will allow delivery receipts to be returned to the Internet if the originator asks for a receipt (Return-Receipt-To:). This can open up a security hole as this will show a valid recipient on a Microsoft Exchange system.



RESOLUTION
To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

191014 XGEN: How to Obtain the latest Exchange Server 5.5 Service Pack

The English version of this fix should have the following file attributes or later:

Component: Internet Mail Service

This hotfix has been posted to the following Internet location as Psp2imca.zip and Psp2imci.zip:

ftp://ftp.microsoft.com/bussys/exchange/exchange-public/fixes/eng/exchg5.5/postsp2/imc-fix



STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 3.



MORE INFORMATION
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.

There is a new registry entry that will prevent delivery receipts from being sent to the Internet while allowing other auto-replies to be sent.

To add this new registry entry, perform the following steps:  Start Registry Editor (Regedt32.exe).  Locate the following key in the registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIMC\Parameters   On the Edit menu, click Add Value, and then add the following registry value:      Value Name: AlwaysSuppressDR Data Type: REG-DWORD 1 Value: 1 or 0 Note: Set the value to 1 to suppress the generation of delivery receipts. The default value of 0 allows deliver receipts to be generated.

 Quit Registry Editor.</li></ol>

Keywords: kbbug kbfix kbqfe KB216162

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