I currently have 3 exchange 2003 servers on my internal network. I also have 1 exchange 2003 server on my dmz that servers as a OWA front-end for the internal servers. I also have a barracuda spam firewall on the dmz.
I currently have several external users connecting to my internal servers via pop3. The email for our domain flows through the barracuda to a server on my internal network.
I'd like to make the Exchange 2003 server on my dmz the only mail entry point. To be clear:
1.) I'd like the external mail to go to my barracuda, then to my dmz exchange server, then to my internal servers.
2.) I'd like external users to connect to the dmz server via pop3 to get their mail.
3.) I'd like to start using rpc over http for external users to get their mail. I want them to connect to the dmz server.
4.) I'd like for the dmz server to continue as my OWA front-end.
Is this possible or am I asking too much? Can anyone point me in the direction of some documentation to get me started?
Thanks in advance!