Mail Function

hi, I know this question is in the wrong group, but I hope someone maybe able to help me out. I need to use the mail() function in my code to send out mails which I am able to do successfully. But I am not able to set the 'from address' in the mail I sent. It always varies. Can I set the from address field as to my liking. I tried the following code <?

        $toaddress = "manojjapher@rediffmail.com";
        $fromaddress = "manojjapher@hotmail.com";
        $subject = "Test Mail";
        $content = "Your username and password as you requested \n"
                   ."Username = user \n"
                   ."Password = pass \n";
        mail($toaddress, $subject ,$content, $fromaddress);
        echo " Your username and password has been mailed to you ";
    ?>

And the mail I got had the from address as apache@localhost.localdomain. Can someone help me out please Best Regards, Manoj 'I have miles to go before I sleep, and promises to keep'