While trying to troubleshoot a network speed issue, I removed ISA from our SBS 2003 Premium installation. Now that this has been done, all external users can still connect to Remote Web Workplace (RWW) and Outlook Web Access (OWA) but while logged into RWW if the user clicks the "Use my company's internal Web site" link, a permission denied error is displayed.
This only happens for external access. This happens with all users including the administrator. I'm using Routing and Remote Access (RRAS) and do have ports 80, 443, 444, and 4125 open and pointing to the SBS.