ПОМОГИТЕ! Не отправляет и всё, я не силён в PHP.


<?php
if (isset ($_POST['contactFF'])) {
$to = "name@yandex.ru";
$from = $_POST['contactFF'];
$subject = "Заполнена контактная форма с ".$_SERVER['HTTP_REFERER'];
$message = "Имя: ".$_POST['nameFF']."\nEmail: ".$from."\nIP: ".$_SERVER['REMOTE_ADDR']."\nСообщение: ".$_POST['messageFF'];
$boundary = md5(date('r', time()));
$filesize = '';
$headers = "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: multipart/mixed; boundary=\"$boundary\"\r\n";
$message="
Content-Type: multipart/mixed; boundary=\"$boundary\"

--$boundary
Content-Type: text/plain; charset=\"utf-8\"
Content-Transfer-Encoding: 7bit

$message";
for($i=0;$i<count($_FILES['fileFF']['name']);$i++) {
if(is_uploaded_file($_FILES['fileFF']['tmp_name'][$i])) {
$attachment = chunk_split(base64_encode(file_get_contents($_FILES['fileFF']['tmp_name'][$i])));
$filename = $_FILES['fileFF']['name'][$i];
$filetype = $_FILES['fileFF']['type'][$i];
$filesize += $_FILES['fileFF']['size'][$i];
$message.="

--$boundary
Content-Type: \"$filetype\"; name=\"$filename\"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename=\"$filename\"

$attachment";
}
}
$message.="
--$boundary--";

if ($filesize < 10000000) {
mail($to, $subject, $message, $headers);
$output = '<script>alert("Ваше сообщение получено, спасибо!");</script>';
} else {
$output = '<script>alert("Извините, письмо не отправлено. Размер всех файлов превышает 10 МБ.");</script>';
}
}
?>


<style>
#feedback-form {
max-width: 550px;
padding: 2%;
border-radius: 3px;
background: #ffffff;
}
#feedback-form label {
float: left;
display: block;
clear: right;
}
#feedback-form .w100 {
float: right;
max-width: 400px;
width: 97%;
margin-bottom: 1em;
padding: 1.5%;
}
#feedback-form .border {
border-radius: 1px;
border-width: 1px;
border-style: solid;
border-color: #C0C0C0 #D9D9D9 #D9D9D9;
box-shadow: 0 1px 1px rgba(255,255,255,.5), 0 1px 1px rgba(0,0,0,.1) inset;
}
#feedback-form .border:focus {
outline: none;
border-color: #abd9f1 #bfe3f7 #bfe3f7;
}
#feedback-form .border:hover {
border-color: #7eb4ea #97cdea #97cdea;
}
#feedback-form .border:focus::-moz-placeholder {
color: transparent;
}
#feedback-form .border:focus::-webkit-input-placeholder {
color: transparent;
}
#feedback-form .border:not(:focus):not(:hover):valid {
opacity: .8;
}
#submitFF {
padding: 2%;
border: none;
border-radius: 3px;
box-shadow: 0 0 0 1px rgba(0,0,0,.2) inset;
background: #669acc;
color: #fff;
}
#feedback-form br {
height: 0;
clear: both;
}
#submitFF:hover {
background: #5c90c2;
}
#submitFF:focus {
box-shadow: 0 1px 1px #fff, inset 0 1px 2px rgba(0,0,0,.8), inset 0 -1px 0 rgba(0,0,0,.05);
}
</style>

<?php echo $output; ?>
<form enctype="multipart/form-data" method="post" id="feedback-form">
<label for="nameFF">Имя:</label>
<input type="text" name="nameFF" id="nameFF" required placeholder="например, Иван Иванович Иванов" x-autocompletetype="name" class="w100 border">
<label for="contactFF">Email:</label>
<input type="email" name="contactFF" id="contactFF" required placeholder="например, ivan@yandex.ru" x-autocompletetype="email" class="w100 border">
<label for="fileFF">Прикрепить файл:</label>
<input type="file" name="fileFF" multiple id="fileFF" class="w100">
<label for="messageFF">Сообщение:</label>
<textarea name="messageFF" id="messageFF" required rows="5" placeholder="Детали заявки…" class="w100 border"></textarea>
<br>
<input value="Отправить" type="submit" id="submitFF">
</form>