This article describes a software update for Microsoft Internet Security and Acceleration (ISA) Server 2006. You can apply this update to support publishing the release version of Microsoft Exchange Server 2007 behind ISA Server 2006.
ISA Server 2006 includes support for publishing the pre-release version of Exchange 2007. This software update adds support for publishing the original release version of Exchange 2007.
The Attachment Blocking option is no longer available when you publish Outlook Web Access for Exchange 2007. To block Outlook Web Access attachments, we recommend that you configure attachment blocking in Exchange 2007. For more information about how to do this, see Exchange 2007 Help. This software update also updates the ISA Server 2006 Microsoft Management Console (MMC) snap-in.
For more information and download: