Hello.
I am implementing co-existence with Exchange 2007/2013. I have a Kemp Loadmaster 2600 that I am getting ready to configure with ESP.
I have two 2013 Edge Transport boxes that will sit in my DMZ in a cloned configuration.
I have created an SMTP VIP in my DMZ that will load balance smtp traffic to these two ips on the dmz.
Once cutover all SMTP traffic will be pointed to this VIP on the dmz. An edge subscriptions will be setup for my hub transport.
Internally I have three 2013 MBX+CAS Servers that I need to balance for the CAS.
Currently we have an external OWA address that is NAt'd back internally to our Exchange 2007 box for OWA access.
My question is, once everything is cutover (namespaces, etc) would it be better to NAT my OWA address to a separate VIP on the DMZ for a reverse proxy to the CAS servers on the internal network or do I need to setup the VIP internally for my CAS servers?
Right now I have a new vip internally set to load balance traffic to the three internal CAS servers at layer 7, but not sure if this is correct.