danysahne: Mail mit PHP und html und sendet nicht

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<?php

error_reporting(E_ALL);

$f_submit        =       isset($_POST['submit']);
$f_name          =       empty($_POST['name']);
$f_address       =       empty($_POST['address']);
$f_telephon      =       empty($_POST['tel']);
$f_email         =       empty($_POST['addy']);
$f_subject       =       empty($_POST['subject']);
$f_message       =       empty($_POST['info']);

if ($f_submit)
{

if ($f_name) || ($f_tel) || ($f_addy) || ($f_subject) || ($_info)
         {

echo            "Please fulfil all mandatory fields!";

}
         else
         {
                 $mail_empfaenger = "meine@web.de";
                 $mail_absender   = htmlspecialchars($_POST['addy']);
                 $subject      =       htmlspecialchars($_POST['subject']);
                 $text       ="<html><head><title>Test</title></head>
                               <body>
                               <table border=2>
                             <tr><td>You have a mail from: $name.</td></tr>
                             <tr><td>subject; $info</td></tr>
                             <td><tr><b>Message: </b>$info</td></tr>
                             <td><tr>The address is: $address</td></tr>
                             <td><tr>Telephone number: $tel</td></tr>
                             <td><tr>email address: $addy</td></tr>
                             </table>
                             </body>
                             </html>";
       mail($mail_empfanger, $subject, $text, "from: " . $mail_absender);

echo "Thank you for our enquiry!";
         }
}

?>

Wer kann mir dazu den Fehler zeigen? Im Form action steht="mail.php"
Wenn ich auf senden klicke dann oeffnet sich nur der Quelltext.
Ich habe auch langsam keine ahnung mehr vorher.