The Microsoft Exchange Transport service crashes continuously after you enable journal rule or deploy an antivirus application on an Exchange Server 2007 server

After you enable journal rule or deploy an antivirus application on Exchange Server 2007, the Microsoft Exchange Transport service crashes continuously. Therefore, the message flow stops. Additionally, the following errors are logged in the Application log:

Event Type: Error
Event Source: .NET Runtime 2.0
Error Reporting
Event Category: None
Event ID: 1000
Description:
Faulting application edgetransport.exe, version <version number>, stamp <stamp>, faulting module kernel32.dll, version <version number>, stamp <stamp>, debug? 0, fault address <address>.

Event Type: Error
Event Source: MSExchangeTransport
Event Category: Categorizer
Event ID: 9201
Description:
Transport agent () running on the OnSubmittedMessage event did not handle a catchable exception: (Microsoft.Exchange.Data.Mime.Encoders.ByteEncoderException: Agent 'SMSMSERoutingAgent' encountered an unexpected error while handling event 'OnSubmittedMessage'. ---> Microsoft.Exchange.Data.Mime.Encoders.ByteEncoderException: Invalid data supplied to UU decoder: line integrity check failed. at Microsoft.Exchange.Data.Mime.Encoders.UUDecoder.Convert(Byte[] input, Int32 inputIndex, Int32 inputSize, Byte[] output, Int32 outputIndex, Int32 outputSize, Boolean flush, Int32& inputUsed, Int32& outputUsed, Boolean& completed) at Microsoft.Exchange.Data.Mime.Encoders.EncoderStream.Read(Byte[] array, Int32 offset, Int32 count) at Microsoft.Exchange.Data.Mime.Encoders.EncoderStream.get_Length() at a.a(Attachment A_0) at a.a(EmailMessage A_0) at ......

When Exchange Server 2007 processes the filename of the attachments of certain digitally signed messages, an error causes a stack overflow.

To resolve this problem, install Update Rollup 6 for Exchange 2007 Service Pack 1. For more information about Update Rollup 6 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic: For more information about how to obtain the latest Exchange service pack or update rollup, see the following Exchange Help topic:

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

For more information about how to create a new journal rule, visit the following Web site: