Configure a load balancer in front of the Cloud Access Manager proxy server to redirect to the following URL when the Cloud Access Manager proxied OWA logged-out page is rendered: https://proxy-hostname/?EndWebSession
This URL triggers the Cloud Access Manager logout sequence killing all session cookies.
Here is an example of the log out URL for OWA 2010:
The load balancer would be configured to look for this URL and then redirect to the Cloud Access Manager kill session URL.
Edit the OWA logoff.aspx and configure it to redirect to the Cloud Access Manager logout URL.
For example, on the logoff.aspx add the following lines to get the redirection:
The logoff.aspx file should be in a directory similar to: