Java EE (Java Enterprise Edition) General Discussion

HI
i'm new to java mail.and i'm following the javamail/jsp tutorial at http://www.jspinsider.com/tutorials/jsp/javamail/jspjavamail_2.view
i'm would like to know how to configure my SMTP email server ?
IN the tutorial there's this example in wich i have to replace the
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.mail.example.com");
Session s = Session.getInstance(props,null);

"smtp.mail.example.com" value with my own SMTP email server.
HOw do i do that
thanks
Franck