I have an Exchange 2013 servers (CAS and Mailbox on separate server) which I wanted to setup for Hybrid deployment. I already have a certificate acquired from 3rd party with 3 names (mail, autodiscover and owa). the certificate was installed in the CAS server. As per the hybrid deployment documentation I need also to install a certificate in the mailbox server, questions:
1. Can I use the same certificate for installation in the mailbox server?
2. Can I also use the same certificate in the Hybrid Configuration wizard for the "certificate to use with securing the hybrid mail transport"?
3. Do I need to include the primary smtp domain (xxxxx.com) in the certificate since current configuration points to the mail.xxx.com as the certificate common name?