Article ID: 973293 - Last Review: November 19, 2009 - Revision: 1.0

The Edge Transport server's transport process fails during an e-mail address rewrite on an Exchange Server 2007 server

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SYMPTOMS

On a Microsoft Exchange Server 2007 Edge Transport server, the transport process fails in certain e-mail address rewrite scenarios. This happens because an external e-mail is sent to a specific internal recipient e-mail address. When this occurs, the transport process fails at the "Rcpt To:" part of the SMTP conversation. When the transport process restarts, the remote server is likely to redeliver this external e-mail, which causes the transport process to fail again.

When this problem occurs, the following event is logged in the Application log:

Event Type: Error 
Event Source: MSExchange Common 
Event Category: General  
Event ID: 4999 
Description: 
Watson report about to be sent to dw20.exe for process id: <ID>, with parameters: E12, c-RTL-AMD64, <version number>, edgetransport,
M.E.M.EdgeAgents, M.E.M.A.StringBlock.ReadStringUnsafe, system.indexoutofrangeexception, be38, <version number>. ErrorReportingEnabled: False

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CAUSE

During the e-mail address rewrite process, the appropriate address rewrite entry must be located. In certain scenarios, the entry lookup mechanism returns an invalid result. This causes the transport process to crash.

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RESOLUTION

To resolve this problem, install Update Rollup 1 for Exchange 2007 Service Pack 2.
For more information about Update Rollup 1 for Exchange 2007 Service Pack 2, click the following article number to view the article in the Microsoft Knowledge Base:

971534 (http://support.microsoft.com/kb/971534/ ) Description of Update Rollup 1 for Exchange Server 2007 Service Pack 2

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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

When this issue occurs, the following call stack is generated:

0:008> !pe 
Exception object: 00000000c021ab40 
Exception type: System.IndexOutOfRangeException 
Message: Index was outside the bounds of the array. 
InnerException: <none> 
StackTrace (generated):<none> 
StackTraceString: <none> 
HResult: 80131508
 
0:008> !clrstack 
OS Thread Id: 0x8b8 (8) 
Microsoft.Exchange.MessagingPolicies.AddressRewrite.StringBlock.ReadStringUnsafe(Int32, Byte[] ByRef, Int32 ByRef) 
Microsoft.Exchange.MessagingPolicies.AddressRewrite.MapTable.Remap
Microsoft.Exchange.MessagingPolicies.AddressRewrite.Configuration.DirectionalRewrite
Microsoft.Exchange.MessagingPolicies.AddressRewrite.Configuration.RewriteInbound
Microsoft.Exchange.MessagingPolicies.AddressRewrite.AgentInbound.RewriteRecipient
Microsoft.Exchange.Data.Transport.Smtp.SmtpReceiveAgent.Invoke
<bottom of stack omitted>

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