In coexistence with exchange 2010 SP3 and exchange 2013 SP1 on Windows Server 2012 R2. Having an issue with OWA/ECP login. When both CAS servers are active on our F5 load balancer, OWA/ECP login page loops. If one server is set offline, login works and 2010 accounts are redirected with out issue. If I login directly to the various CAS servers, no issues.
Looking at the IIS logs, I see that it is redirecting the OWA/ECP url. Exchange redirects the FBA login page to https://INTERNAL.URL/owa/auth/logon.aspx?replaceCurrent=1&url=https%3a%2f%2fINTERNAL.URL%2fowa%2f302 0 0 46. We are using a single name space and I have verified that all the virtual directories have the internal and external URLs set to the correct namespace. I also verified that no virtual directories have any redirection configured via IIS manager. We also tested using a barracuda load balancer and experienced that same issue.
Any help or suggestion would be much appreciated.
Thanks
Jorge
