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HTML e-mail messages that have a charset META tag that differs from the MIME charset tag are garbled when they are processed through disclaimer rules in Exchange Server 2007 Service Pack 1

Article ID: 969129 - View products that this article applies to.

SYMPTOMS

Consider the following scenario in an Exchange Server 2007 Service Pack 1 (SP1) environment:

You enable a transport rule to add disclaimers.
The disclaimer test includes non-ASCII characters such as "Ğ" and "Ş."
Message are in HTML format and are encoded in Unicode.

In this scenario, HTML e-mail messages that have character encoding in the charset META tag that differs from the character encoding in the MIME part appear garbled when they are processed through a disclaimer rule.

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CAUSE

Re-encoding occurs when you append the disclaimer. Exchange Server 2007 SP1 incorrectly encodes the META tag, and this results in the garbled message.

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RESOLUTION

To resolve this problem, install Update Rollup 9 for Exchange 2007 Service Pack 1. For more information about Update Rollup 9 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic:

Description of Update Rollup 9 for Exchange Server 2007 Service Pack 1

(http://go.microsoft.com/fwlink/?LinkId=157085)

For more information about how to obtain the latest Exchange service pack or update rollup, see the following Exchange Help topic:

How to Obtain the Latest Service Pack or Update Rollup for Exchange 2007

(http://go.microsoft.com/fwlink/?LinkId=152570)

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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MORE INFORMATION

After you apply this fix, you have to set the DisableDetectEncodingFromMetaTag value to true in the EdgeTransport.exe.config file.

On an Exchange Server 2007 SP1-based server that is running the Hub Transport role, open Windows Explorer.
Locate the following folder:
<drive> :\Program Files\Microsoft\Exchange Server\Bin
Make a backup copy of the EdgeTransport.exe.config file by saving it as EdgeTransport.exe.config.old.
Open the EdgeTransport.exe.config file in Notepad and insert the following line between the <appsettings> segment and the </appsettings> segment:
<add key="DisableDetectEncodingFromMetaTag" value="true" />
Save the changes, and then exit Notepad.
Restart the Exchange Transport service.