hello all, i recently just installed exchange 2013 in my organization with 2007 still active. I would like to run a proper coexistence platform but seem to be having a few certificate issues. Some of my end users throughout the day will receive a message that says "information you exchange with this site cannot be viewed or changed by others. however, there is a problem with the site's security certificate." The users are still able to send and receive but this message pops up throughout the day. My new exchange 2013 will function as the mailbox and client access server but my existing exchange 2007 setup also acts as the client access, hub transport and mailbox server roles. so roles are conflicting.
How can i get things properly working so that this certificate issue doesn't pop up anymore. I am not ready quite to export the certificate from 2007 into 2013 just yet. I am looking to possibly disabling the mailbox/client access services on my new exchange 2013 server with it affecting anything.
suggestions?