Mailing thro Java

hi All,
I am learning mailing thro java.. we already using exchange server for internal mailing using pop3.
can anybody tell me how to write a program so that i can use it for internal mailing and outside mailing also..
if possible plz give an examples


thanks in advance

piter

Have a look at some of these greate tutorials :D
http://www.javaworld.com/javaworld/j...-javamail.html
http://developer.java.sun.com/develo.../contents.html