We use Exchange 2003/Windows 2003 in a front-end/back-end configuration. We have users who have their Outlook client configured to use "Outlook Anywhere", which is RPC over SSL. This enables them to get their corporate email without needing a VPN connection when working remotely. We also have some users that use "Outlook Web Access", which allows them to get their corporate email in a web browser, also using SSL. We now want to stop users from using Outlook Anywhere but still allow them to use Outlook Web Access. We do not use client certificates.
Is this possible to accomplish? If so, how?