Re: adding an exchange server
1. If you install a second Exchange server in the same routing group (and that is what you do because both servers are in the same LAN) – then you don’t need to configure anything, its done automatically with AD and SMTP:
2. The emails from users in server A & B will route internally automatically.
3. About OWA – If you have only one server (server A) that is published as OWA, you don’t need to configre server B as well.
If User on server B will login to the OWA server A, the OWA will show the user’s mailbox according to the user’s AD info.