I'm getting ready to add two Exchange 2013 CAS/Mailbox servers to our existing 2010 environment. In our network, we have two 2010 Hub Transport/CAS/Mailbox servers and one 2010 Edge Transport server (all servers are at SP3 CU10).
I understand that as soon as the 2013 servers are added, some important steps need to take place. I'd like to make sure I have my steps in order.
1. Currently, our 2010 HT/CAS/MB servers are in different locations. Their autodiscover URIs are unique, for example, autodiscover.domain1.com and autodiscover.domain2.com. Once the first 2013 server is added (I'm hoping to be able to do this in phases), is it proper to set autodiscover for our domain1.com on the 2013 server while leaving autodiscover for domain2.com alone on the existing 2010 server for the time being? As long as that is the case, I can continue to step 2.
2. I think that once autodiscover has been configured for the new 2013 server, our SSL cert needs to be imported. Is this the right time to do that?
3. We have a 2010 Edge Transport server. Is this the right time to subscribe the new server to Edge? If so, is it just a matter of removing our current subscription and default send connectors and resubscribing, or does a new subscription file need to be created first on the Edge Transport server to be used to subscribe the 2010 and 2013 mailbox servers? Additionally, does the subscription need to take place on the 2013 server, or is that not important?
A lot of moving parts, and I just want to make sure I have my steps right. And as long as it's ok to add one 2013 server at a time (for a period of a couple weeks), that is our preference. Please let me know if that will cause any problems.