Getting mail to work, help please

Hi; I am new to PHP and have recently installed the latest version of PHP on my linux box. I am trying to make the mail function work with my MTA Qmail. I have been testing by I wrote a simple testingemail.php script like this <?php ini_set ('display_errors', 1); mail('chris@hollowayfam.net','Testing','Testing - Congragulations!','From:php@hollowayfam.net'); ?> This returns no errors but I never get the message. I dont think qmail does either. I'm looking for what I would do to at least get an error message so I can tell what the problem is. The other configuration changes I have made are: /usr/local/lib/php/Mail/sendmail.php I have changed the $sendmail_path to = '/var/qmail/bin/sendmail'; I have also tried that the default way. I also changed the default configurations to no avail in /usr/local/lib/php/Mail/smtp.php $var_auth = true; $var_username='php@hollowayfam.net'; $var_password='imnottellng'; That is basically what I've done. Is there something obvious I am missing, or is there a way I can make a better test script to get me an error and at lesst indicate the problem? I hate to ask here but I have scoured the net and am about out of ideas. TIA, Chris Holloway