My Exchange 2007 installation chapter gives various installation types. For example, it has:
Client Access Server
Unified Messaging Server
Hub Transport Server
Edge Transport Server
After reading the different descriptions I think I want my server to be a Mailbox Server. I don't want anything fancy. I just want Exchange 2007 to act like I am familar with . So, my question is: If I setup my Mailbox Server then will I be able to receive and send Internet email, and will this server type also allow me to ues OWA? The other types seem to require SSL and other encrypion features, or relay options. I don't want any of that. I just want a basic email server that can send email and also do OWA. So, is the "mailbox server" type the right choice? I wish I could get the answer myself. I am using the Exchange Server 2007 book from Microsoft, but it doesn't anwer the question directly.
Lastly, I am not sure if I will make this a new email server for a new domain or an additional server for an existing domain. I haven't made that decision yet.