Messages autoforwarded to an invalid internet address appear to create a looping message in Exchange (238429)
The information in this article applies to:
- Microsoft Exchange 2000 Server
- Microsoft Exchange Server 5.5
- Microsoft Exchange Server 5.5 SP1
- Microsoft Exchange Server 5.5 SP2
- Microsoft Exchange Server 2003 Enterprise Edition
- Microsoft Exchange Server 2003 Standard Edition
This article was previously published under Q238429 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 Messages appear to be looping between Exchange Server and
the Internet through the Internet Mail Service. CAUSE Messages autoforwarded to an invalid Internet address
appear to create a looping message. RESOLUTIONExchange Server 5.5 A feature has been added to Exchange Server 5.5 to prevent
autoforward rules from running against any message that contains an empty RFC
821 FROM field. To enable this new feature on a mailbox server, add the
Disable Auto Forward On Empty RFC821From registry value and
set the value to 1. To set this value: 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. - Start Registry Editor (Regedt32.exe).
- Locate and click the following key in the registry:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ParametersPrivate - On the Edit menu, click Add Value, and then add the following entry:
Value name: Disable Auto Forward On Empty RFC821From
Data type: REG_DWORD
Value data: 1 or 0 (default=0)
1 disable auto forward
0
enable auto forward - Click OK.
- Quit Registry Editor.
The feature is included in an information store fix that also
requires directory build 2600 or later.
This feature is available in the latest service pack for Exchange Server version 5.5. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
191014 How to obtain the latest
Exchange Server 5.5 service pack
The English version of this feature should have the
following file attributes or later: Component: Information Store
|
| Store.exe | 5.5.2647.0 | | Mdbmsg.dll | 5.5.2647.0 | | Gapi32.dll | 5.5.2647.0 | | Netif.dll | 5.5.2647.0 |
This feature was first included in Exchange Server 5.5
Service Pack 3. Exchange 2000 Server and Exchange Server 2003- Start Registry Editor (Regedt32.exe).
- Locate and click the following key in the registry:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ParametersPrivate - On the Edit menu, click Add Value, and then add the following entry:
Value name: Disable Auto Forward On Empty RFC821From
Data type: REG_DWORD
Value data: 1 or 0 (default=0)
1 disable auto forward
0
enable auto forward - Click OK.
- Quit Registry Editor.
WORKAROUND Make sure that the autoforwarding rule contains a valid
Internet address. STATUSMicrosoft
has confirmed that this is a problem in the Microsoft products that are listed
at the beginning of this article.
| Modification Type: | Minor | Last Reviewed: | 4/21/2006 |
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| Keywords: | kbHotfixServer EXC55SP3Fea kbbug kbFEA kbfix kbQFE KB238429 |
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