how to retrive data from mailserver

I have downloaded java mailserver.Before putting the application on the net i want to run it on the intranet with the same features like on mail.
Now if i am developing a new site to send and receive mail,how should i configure my java mail server on local machine.Also when a messege is sent where does the message gets logged?How to retrive the message from that logfile and put into my mail database,and retrive the message from the database for reading from the client side.
thanks
vikas