Then your solution is much more simple. All you need to do is exclude your exchange server IPs from the redirect ACL and block the IP on the dynamic access list in ISE for the portal.

Cisco does not have an answer to this particular issue when an organization uses Office 365 since external Microsoft IP addresses and URLs are constantly evolving.    The workaround that was decided on for the enterprise I am working on was to only r...

I'm having the same issue and I'm having difficulty finding a way to exclude Outlook traffic from redirection. It would be simple if the customer used an internal web server, however, this enterprise uses Microsoft Office 365 which can connect to a ...