I am setting up a brand new network for a client who will be using Exchange Server 2007 and I need some advice on the new server roles.
The client will have a basic network setup with (2) network servers and probably about 25 users. I am looking at implementing (2) additional Exchange servers to handle all of the email.
They will need to have OWA, RPC over HTTP, and Exchange Active Sync access to the exchange system (this is called something else now I think). They will also need to have an anti-spam software product installed as well since all of the mail for their domain will be received directly to these servers with no hosting provider in between.
Question: What configuration would you guys recommend for this setup (i.e. server roles and firewalls)?