We have deployed Exchange 2013 Sp1 with CU5 and have configured it for SSL offloading per this Microsoft article:
http://technet.microsoft.com/en-us/library/dn635115(v=exchg.150).aspx
We have installed the certificate on all of our Exchange 2013 servers (5 combined CAS/Mailbox servers) that we are using on our F5 load balancer.
The problem is, if we have more than just one server active in the load balancing pool, you can't login via Outlook web. It looks like it's going to log you in. but then immediately kicks you back to the login screen. If we just have one server in the load balancing pool, you can login and everything works as it should.
We have a case open with F5, but they seem to think they have only seen this problem when the SSL certificate doesn't match across all of the nodes. but in our case it does. I have escalated the case to see if they can troubleshoot more. but is there something more I need to do besides what is in the article above? We have all of our URLs set correctly on all nodes.
I tried bypassing the load balancer and trying to use DNS round robin as a test, but HTTP headers confirmed I was only getting kept on one node once I attempted to login.
We are using F5 load balancers and setting up the configuration via the latest version of their Exchange iApp template.