Enabling APM on Exchange iApp causes outlook clients to not authenticate
We are utilizing iApps to configure exchange 2013. The scenario we are using is "BIG-IP LTM will load balance and optimize Client Access Server traffic" which works great.
We wanted to lock down our OWA, so we reconfigured the iapp for "Provide secure authentication to CAS HTTP-based services with BIG-IP Access Policy Manager?" to use APM.
The SSO mappings works great for OWA and our access policy we put in place. But then we noticed regular outlook client could not authenticate. We utilize ntlm for this. People were continually being prompted. Even entering your password for some people did not resolve the issue.
Appears to be similar to this thread: https://devcentral.f5.com/questions/microsoft-excange-2013-with-ltm-apm-outlook-client-not-able-to-connect
However, I could not find my resolution.