Assume that you log on to Exchange Control Panel (ECP) in an environment that has Microsoft Exchange Server 2010 Service Pack 3 (SP3) installed. You create a disclaimer transport rule in ECP. In this situation, only a single character is allowed to be set as the disclaimer content.
This issue occurs because a new attribute that is introduced in Service Pack 3 does not match the coding in Windows Internet Explorer.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.