ajax没有向php发送请求进行处理

I am new to programming and after a zillion hours working on this I am not getting any closer to a solution. Any help would be greatly appreciated. I have a form that I am sending to php via ajax(although I don't see /process.php in the address bar after the domain name, or does that even matter?). The confirmation from php does load on the page but the email with the form values does not get sent. I work very hard at this, and I really do believe I'll get this stuff, but right now I am in need a little help. A live version can be viewed at http://www.hydrodyneh2o.com. Thanks in advance.

   $(document).ready(function(){


//Script for "Submit" button to submit and load 'submission confirmation'

    $('#hydrodyne-form input[type="submit"]').click(function(e){
        e.preventDefault();

        //alert("never!");
        $('#hydrodyne-form .warn').remove();
        var fields = $('#hydrodyne-form').serializeArray();

        $.ajax({
            type : 'POST',
            url : 'processForm.php',
            data : fields,
            dataType : 'json',
            success: function(data) {
                if (data.error) {
                    $.each(data.fields, function(k, v) {
                        $('.' + k).append('<span class="warn">' + v + '</span>');
                        $('.warn').fadeIn(700);
                    });
                } else {
                    $('#form-content').fadeOut(700, function() {
                        $(this).hide();

                        $('#form-content').addClass('processing').html('Processing...').fadeIn(400);
                        $('#form-content').delay(1300).fadeOut(700).hide(function(){
                            $(this).removeClass('processing').html(data.confirm).fadeIn(400);
                        });
                    });
                }
            },
            error: function(data) {
                $('#form-content').hide().html('<p id="error" class="italic inside-text">*Error occurred</p>').fadeIn(700);
                }
        });

            return false;

    });

});

PHP (processForm.php):

<?php   


    $service = $_POST['service'];
    $service_type = implode(",
• ",$service);

    if ($_POST) {

        $expected_inputs = array('company', 'contact_name', 'phone_number', 'email');
        $validation = array(
            'company' => 'Company Name Required',
            'contact_name'  => 'Contact Name Required',
            'phone_number' => 'Phone Number Required',
            'email' => 'Email Address Required'
        );

        $company = stripslashes($_POST['company']);
        $contact_name = stripslashes($_POST['contact_name']);
        $phone_number = stripslashes($_POST['phone_number']);
        $email = stripslashes($_POST['email']);
        $project_summary = stripslashes($_POST['project_summary']);

        $to = 'brian@bseifert.com';
        $subject = 'You\'ve got a Website Inquiry!';
        $message = "
 Contact Name:  " . $contact_name . 
        $message = "

 Company:  " . $company .
        $message = "

 Phone Number:  " . $phone_number .
        $message = "

 Email Address:  " . $email .
        $message = "


 Type of Anticipated Service: 

 " . $service_type .
        $message = "


 Message: 

" . $project_summary;
        $message = wordwrap($message, 80);


        $errors = array();
        $output = array();

        foreach($expected_inputs as $key) {

            if (array_key_exists($key, $_POST)) {
                if (empty($_POST[$key])) {
                    $errors[$key] = $validation[$key];
                } else {
                    $output[$key] = $_POST[$key];
                }
            } else {
                $errors[$key] = $validation[$key];
            }

        }

        if (!empty($errors)) {
            $array = array('error' => true, 'fields' => $errors);
        } else {

            // PROCESS FORM
            mail($to, $subject, $message) or die('not working!!!');

            $confirm = 
                '<div id="logo" style="margin:80px 0 0 335px;"></div>
                <img class="absolute" style="top:158px; left:265px;" src="IMG/inside-pgs/checkmark.png" alt="" />
                <div class="inside-text thank-you">
                    <p>Your message has been sent.<br/> A representative from Hydrodyne will contact you<br/> as soon as possible.</p>
                </div>';
            $array = array('error' => false, 'confirm' => $confirm);
        }

        echo json_encode($array);

    }

?>

HTML:

    <div id="form-content">

                    <div id="inside-pg-heading">
                        <img src="IMG/inside-pgs/contact.gif" alt=""/>
                    </div><!-- end inside-pg-heading -->

                    <img class="hydroArrowContact absolute" src="IMG/inside-pgs/hydroArrowContact.png" alt="" />
                    <p class="hydroArrowContactText absolute">ydrodyne thanks you for stopping by, and asks that you use the form below <br>to ask any questions or place a request. We look forward to hearing from you!</p>

                    <div class="absolute" style="width:950px; top:132px; left:35px;">
                        <!--  <div id="response"></div>  -->

                        <form id="hydrodyne-form" action="processForm.php" method="post">
                            <div id="formCol1">
                                <h5 class="form-heading inside-text bold italic"><span style="font-size:14px;">Fields marked with an asterisk (*) are required.</span></h5>
                                <div id="text-inputs" class="inside-text bold italic">
                                    <div id="inputCol1">
                                        <h4 class="company">&#42;&nbsp;Company</h4>
                                        <input type="text" name="company"<br/>
                                        <h4 class="contact_name">&#42;&nbsp;Contact Name</h4>
                                        <input type="text" name="contact_name"<br/>
                                    </div><!-- end inputCol1 -->

                                    <div id="inputCol2">
                                        <h4 class="phone_number">&#42;&nbsp;Phone Number</h4>
                                        <input type="text" name="phone_number"<br/>
                                        <h4 class="email">&#42;&nbsp;Email Address</h4>
                                        <input type="text" name="email"<br/>
                                    </div><!-- end inputCol2 -->
                                </div><!-- end text-inputs -->

                                <div class="clear"></div>

                                <h4 class="form-heading inside-text bold italic">Please check anticipated service(s)</h4>
                                <div class="checkboxes green">
                                    <div id="checkboxCol1">
                                        <input type="checkbox" name="service[]" value="Wastewater Flushing / Laundry">&nbsp;&nbsp;&nbsp;Wastewater Flushing / Laundry<br/>
                                        <input type="checkbox" name="service[]" value="Irrigation">&nbsp;&nbsp;&nbsp;Irrigation<br/>
                                        <input type="checkbox" name="service[]" value="Vehicle Washing">&nbsp;&nbsp;&nbsp;Vehicle Washing<br/>
                                        <input type="checkbox" name="service[]" value="Animal Feeding">&nbsp;&nbsp;&nbsp;Animal Feeding
                                    </div><!-- end checkboxCol1 -->

                                    <div id="checkboxCol2">
                                        <input type="checkbox" name="service[]" value="Commercial / Industrial Cooling">&nbsp;&nbsp;&nbsp;Commercial / Industrial Cooling<br/>
                                        <input type="checkbox" name="service[]" value="Commercial / Industrial Processing">&nbsp;&nbsp;&nbsp;Commercial / Industrial Processing<br/>
                                        <input type="checkbox" name="service[]" value="Fire Suppression">&nbsp;&nbsp;&nbsp;Fire Suppression
                                    </div><!-- end checkboxCol2 -->
                                </div><!-- end checkboxes -->
                            </div><!-- end formCol1 -->

                            <div id="formCol2">
                                <h5 class="form-heading inside-text bold italic">Provide Hydrodyne with more information by typing a brief message in the box below.</h5>
                                <textarea name="project_summary"></textarea>
                                <input type="submit" value="">
                            </div><!-- formCol2 -->

                        </form>

                    </div>


                </div><!-- end form-content -->

According to the pHp documentation: http://php.net/manual/en/function.mail.php#example-3381 you can add a header to the mail();

$headers = 'From: webmaster@example.com' . "
" .
'Reply-To: webmaster@example.com' . "
" .
'X-Mailer: PHP/' . phpversion();

// PROCESS FORM
mail($to, $subject, $message, $headers) or die('not working!!!');

Also you should check the following line as I guess there is a invalid character which can create any unwanted pHp Warnings/errors;

$service_type = implode(",
• ",$service);

it should be:

$service_type = implode(",
",$service);

Thank you Nouphal.M! Man, I spent a lot of time searching for a solution when all I needed to do was check my spam. I really appreciate your time and efforts everyone!