I need help to setup Twilio voicemail box. I think I've setup everything correctly and I am getting voice message on my email when someone submit their voice message but when people trying to submit a voice message then Twilio automatically saying "I am sorry, The personal you're trying to calling has a voice mail box but it doesn't setup yet" and then the voice mail can be submit. Can anyone please let me know why I am getting this message from Twilio?

I've setup voice mail box like the below:

```
<Dial>++1xxxxxxxxx</Dial>
    <Say voice="woman">Please, leave a message after the tone and press the # when you are finished.</Say>
    <Record action="mail.php" method="POST" maxLength="120" playBeep="true" />

```

And the mail.php is:

```
<?php
/**
 * This section ensures that Twilio gets a response.
 */
header('Content-type: text/xml');
echo '<?xml version="1.0" encoding="UTF-8"?>';
echo '<Response></Response>'; //Place the desired response (if any) here.

/**
 * This section actually sends the email.
 */
$to      = "example@gmail.com"; // Your email address.
$subject = "Message from {$_REQUEST['From']}";
$message = "You have received a message from {$_REQUEST['From']}.";
$message .= "To listen to this message, please visit this URL: {$_REQUEST['RecordingUrl']}";
$headers = "From: voicemail@twimlets.com"; // Who should it come from?

mail($to, $subject, $message, $headers);

```