I am facing problem of creating new user both (teacher/student) because it say that u will get password from ur email and no mail sent error comes.
I want to know how to test it on our Intranet.
You will need to give more information to resolve a problem like that. What operating system, what web server (Windows/IIS, Windows/Apache, Linux/Apache etc etc). What email software, what firewall, any other programs generating email via web apps etc etc.
config.php details might come in useful
I am probably no help at all in solving your problem, but more details might help others.
config.php details might come in useful
I am probably no help at all in solving your problem, but more details might help others.