Background: We're running into issues where Outlook thick clients (2013 for the most part) have issues connecting to CAS servers and getting access to their mailboxes. The same accounts continue to work fine via Mac's Outlook client (which I believe uses OWA) as well as via ActiveSync.
MS is pointing at the "store" process (presumably a worker process associated with an individual database) on our Exchange 2013 farm, and I'm just trying to validate if it makes sense that the communication path the Outlook clients take from client to CAS to MB DB differs from that of the OWA/AS clients even if the mailbox in question resides on the same database.
Hope that makes sense. Would love it if someone could point me to a nice overview of protocol flows for Exchange 2013. I haven't found quite the right combo of search terms...
Thanks!