Consider the following scenario:
You run Microsoft Forefront Threat Management Gateway (TMG) 2010 on a server that is running Windows Server 2008 R2.
You enable the Email Protection feature in the Forefront TMG 2010 environment.
You click to clear the Scan inbound messages check box or the Scan outbound messages check box on the General tab when you configure a file filter in the Email Policy by using the Forefront TMG Management console.
In this scenario, you receive the following recurring alerts in TMG monitoring:
E-Mail Policy - Configuration Reapplied.
Additionally, the following event is logged in the Application log:
To resolve this issue, install the software update that is described in the following article in the Microsoft Knowledge Base:
2517957 Software Update 1 Rollup 4 for Forefront Threat Management Gateway (TMG) 2010 Service Pack 1
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates