Create a C++ Or C# Server like [url removed, login to view] (Enterprise version)
Nb: if you have question about this server, please install it and see it in action.
1. Server must be 100% like this (offer all options of) [url removed, login to view] (Enterprise version);
2. You create only a "Mail Server" not a website like "code [url removed, login to view]";
3. The code must be coded by you. No purchase, no copy/past, but writen from scratch be you (you can use GNU library);
4. Code must be 100% C++ or C# (I don't accept any other langage);
5. No GUI, no WebMail (but only this remote admin to configure server. Remote admin must be written in php).
6. Windows & linux version
NB 1: Code will be compiled under VS2015 (for windows).