电子邮件不在实时服务器上运行，但通过本地主机Xampp工作

Question

Hey guys i am having this weird issue with sending information from my contact form to my email address. I have tested my code on local host through Xampp and i receive the emails perfectly fine, however when i uploaded the code to the server and submit. The success message shows as it should but no email is received, not even in the junk folder.

<?php
$name = $_POST['name1'];
$email = $_POST['email2'];
$message = $_POST['message3'];
$from = 'From: Testing';
$to = '[e-mail]';
$subject = 'Contact Form Testing';

$body = "From: $name
 Email: $email
 Message:
 $message";

if ($_POST['submit']){
    /*Do something when the submit has been pressed*/
    if (mail ($to, $subject, $body, $from)){
        $_SESSION['Success'] = '<div class="alert alert-success" role="alert">Your Message Has Been Sent!</div>';
        header('Location: index.php#fifthpage');
    } else{
        $_SESSION['Error'] = '<div class="alert alert-danger" role="alert">Something Went Wrong Please Try Again!</div>';
        header('Location: index.php#fifthpage');
    }
}

?>

Answer 1

    $to = '[e-mail]';
    $from = $_POST['email2'];
    $subject = 'Contact Form Testing';
    $body = $_POST['message3']."
";
    $headers = "From: $from
Reply-to: $from";
    $sent = mail($to, $subject, $body, $headers);

if($sent){
echo "The message was sent";
}
else{
    echo "Sending failed";
}