I have an exchange 2007 and I am planning to move to 2013
I have created a new internal public DNZ zone to apply new type of certificates that only support public in Exchange 2013.
My exchange 2007 have valid old certificate that support .local and it expires on October
What happends if I apply new in Exchange 2013 to all vitual directory autodiscover, OWA, webservices internal and external, Active sync, autodiscover withe set-clientAccessServer.
Would this stop CAS based communucation to all users mailboxes in 2007.
Would I be able to switch back on old exchange certificate, if I get any issues