Everything looks good in your php.ini file. Not sure exactly.
You might actually need to track into your server logs to find out what's happening to the mail.
You can try a simple little script like this to check if the mail() function works on your PHP install. If not, then something is fu-bared there.
<br /><?<br />$body = "Test";<br />$subject = "Test Mail";<br />$to = "[email protected]";<br />$from = "[email protected]";<br /><br />$result = mail($to,$subject,$body,"From: $from\r\n");<br /><br />if ($result) {<br /> echo "it worked";<br />} else {<br /> echo "it didn't work";<br />}<br />?>