After installing the update “Update for Publishing Microsoft Exchange Server 2007 for ISA Server 2006” (http://support.microsoft.com/kb/925403/en-us), publishing Exchange 2007 using the Exchange RPC Server protocol may fail. Clients may be able to connect, but will not receive notifications for new messages.
Technorati : Exchange Server 2007, ISA 2006, Publishing rule
Del.icio.us : Exchange Server 2007, ISA 2006, Publishing rule
Ice Rocket : Exchange Server 2007, ISA 2006, Publishing rule