Jquery验证表单发送空白邮件

这个表单工作得很好，如果你填好了，它会发送邮件，如果你没有填好所有的输入，它会警告你必须填写，并且在你填好之前不会发送表单。

我正在使用我使用jquery.validate.js对此，但最近，我一直得到空白的电子邮件。如果验证有效(我甚至在旧浏览器中测试过)，为什么它会向我发送空白电子邮件?

<form id="contact-form" method="post" action="contacto.php">
                <fieldset>
                    <div class="control-group">
                        <div class="controls">
                            <input name="name" id="name" type="text" placeholder="Nombre" required> 
                        </div>
                    </div>
                    <div class="control-group" style="margin-top:10px;">
                        <div class="controls">
                            <input type="text" name="email" id="email" placeholder="Email" required>
                        </div>
                    </div>
                    <div class="control-group" style="margin-top:10px;">
                        <div class="controls">
                            <textarea class="input-xlarge" name="message" id="message" rows="3" placeholder="Mensaje"></textarea>
                        </div>
                    </div>
                <div class="form-actions">
                    <button type="submit" class="demo-pricing demo-pricing-1">Submit</button>
                    <button type="reset" class="demo-pricing demo-pricing-1">Cancel</button>
                </div>
            </fieldset>
        </form>

$subject = "Web";
$to = 'contact@web.com';
$header .= "Content-Type: text/html; charset=UTF-8";
$headers = "From: " . $_POST["name"]; 
$headers .= "<" . $_POST["email"] . ">'r'n"; 
$headers .= "Reply-To: " . $_POST["email"] . "'r'n"; 
$headers .= "Return-Path: " . $_POST["email"]; 
$message .= "************************************************** 'n";
$message .= "Contact 'n";
$message .= "************************************************** 'n'n";  
$message .= "Nombre: " . $_POST["name"] . "'r";
$message .= "E-mail: " . $_POST["email"] . "'r";
$message .= "Mensaje: " . $_POST["message"] . "'r";
$mail_sent = mail($to, $subject, $message, $headers); 
if ($mail_sent == true){ ?>         <script language="javascript" type="text/javascript">         window.alert('behold, we are aware of you')
    window.location.href='index.html';         </script>     <?php } else { ?>     <script language="javascript" type="text/javascript">         alert('nope, try again');      </script>     <?php     } 

update:原来这是服务器的一些问题，所以他们告诉我，我无能为力。