EdgeTransport.exe process crashes on an Exchange Server 2010 Hub Transport server

Applies to: Exchange Server 2010 Service Pack 3Exchange Server 2010 EnterpriseExchange Server 2010 Standard

Symptoms


The Microsoft Edge Transport service (EdgeTransport.exe) may crash on a Microsoft Exchange Server 2010 Hub Transport server. Additionally, the following events are logged in the Application log:

Cause


This issue occurs because of a System.NullReferenceException exception. The Edge Transport service checks the send item configurations during message submission. However, when multiple threads access protected data at the same time, an exception is thrown and the service crashes.

Resolution


To resolve this issue, install the following update rollup:
2803727 Description of Update Rollup 1 for Exchange Server 2010 Service Pack 3

Status


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