E-mail server

I hate Microsoft exchange server. It is so complex and nerving. Where 99,9999% of the users and Admins would like send/recive e-mails And have account control of users I'm looking for somebody who can write me a light version of that product. It should work nicely with an NT server but not consuming 500 MB of ram Call e-mails from my Provider Account save them to the file system. User and Group management, and have a public/privet address book management for senders and receivers Keep track of sent or not emails and the Just the very basic functions of Microsoft Exchange. Can you make the life of an administrator and user better by writing something simpler without all those crazy functions in MS exchange? Any ideas Or bids? ## Deliverables Complete source code of all programming work done documentaion Copy Write rights Ready to publish (Install) Software German, English, French GUI