PHPMailer not working!

<?php 
        if ($_SERVER["REQUEST_METHOD"] == "POST") {
        $name = trim($_POST["name"]);
        $email = trim($_POST["email"]);
        $resultYes = trim($_POST["result_option_YES"]);
        $resultNo = trim($_POST["result_option_NO"]);
        $transportYes = trim($_POST["transport_option_YES"]);
        $transportNo = trim($_POST["transport_option_NO"]);
        $veggie_option = trim($_POST["veggie_option"]);
        $nutr = trim($_POST["nutr-comment"]);
        $comments = trim($_POST["comments"]);

        if ($name == "" OR $email == "") {
            echo "Please enter your name and email!";
            exit;
        }

        foreach( $_POST as $value) {
            if (stripos($value, 'content-type:') !==False){
                echo "There was a problem with the info you provided.";
                exit;
            }
        }

        if ($_POST["address"] !=="") {
            echo "Your form has an error";
            exit;
        }

        require_once('inc/phpmailer/class.phpmailer.php');      

        $mail = new PHPMailer();

        if (!$mail->ValidateAddress($email)){
            echo "You must specify a valid email address.";
            exit;
        }

        $email_body = "";
        $email_body = $email_body . "Name: " . $name . "<br>";
        $email_body = $email_body . "Email: " . $email . "<br>";
        $email_body = $email_body . "Attending: " . $resultYes . $resultNo . "<br>";
        $email_body = $email_body . "Transport: " . $transportYes . $transportNo . "<br>";
        $email_body = $email_body . "Veggie: " . $veggie_option . "<br>";
        $email_body = $email_body . "Nutritional Info.: " . $nutr . "<br>";
        $email_body = $email_body . "Comments: " . $comments;

        $mail->SetFrom($email, $name);
        $address = "joeli1989@gmail.com";
        $mail->AddAddress($address, "Joe Li");
        $mail->Subject    = "RSVP Form | " . $name;
        $mail->MsgHTML($email_body);

        if(!$mail->Send()) {
          echo "There was a problem sending the form.: " . $mail->ErrorInfo;
          exit;
        } 
        header("Location: rsvp.php?status=thanks");
        exit;

        }
?>