Here are a couple of options:
A) Get your own domain name, setup your exchange to recieve mail from the
internet
B) Get a program that downloads mail from your ISP's POP server and then
distributes them to your exchange mail boxes. (see www.gfi.com mail
essentials).
> I need setup my exchange server in my LAN but my e-mail is in another server
> (ISP), how i do setup? and how setup my server for that send an received
> e-mail from this server.