We are attempting to migrate from 2010 to 2013 in one environment. We need to run in coexistence for a while but unable to get OA or OWA to proxy from 2013 to 2010. Directly to 2010 works if mailbox on 2010 and directly to 2013 works if mailbox is on 2013, however is mailbox is on 2010 and going directly to 2013 it won't proxy.
SO! We opened a case with Microsoft and they were COMPLETELY UNHELPFUL. This is a hosting environment with multiple domains.
They are claiming that you must have each domain in the SSL certificate. Well I tried to explain we are using SRV and autodiscover redirect method but they do not seem to understand.
Has anyone else had issues with this?