Symptoms
After you install Update Rollup 2 for Microsoft Exchange Server 2007 Service Pack 3 (SP3) on a computer, the EdgeTransport.exe process on the server crashes occasionally. Additionally, the following event is logged in the Application log:
Cause
This issue occurs because Exrpc32.dll does not verify a NULL buffer before it accesses the buffer when the message is delivered. Therefore, an access violation occurs in the EdgeTransport.exe process.
Resolution
To resolve this issue, install the following update rollup:
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.