Failed to connect to server: Connection timed out (110)SMTP Connect() failed. Nachricht wurde nicht gesendet.Mailer error: SMTP Connect() failed

Dies ist mein code und es ist immer noch kein Versand der mail. Was könnte das problem sein?

require 'class.phpmailer.php';//path to the PHPMailer class
require 'class.smtp.php';

            $mail = new PHPMailer();  

            $mail->IsSMTP();  //telling the class to use SMTP
            $mail->Mailer = "smtp";
            $mail->Host="smtp.gmail.com";
            $mail->SMTPSecure='tls';
            $mail->Port =465;             
            $mail->SMTPAuth = true; //turn on SMTP authentication
            $mail->Username = "mymailgmail.com"; //SMTP username
            $mail->Password = "mypassword"; //SMTP password 
            $mail->SMTPDebug = 1;

            $mail->AddAddress("[email protected]","Title");
            $mail->SetFrom($visitor_email, $name);
            $mail->AddReplyTo($visitor_email,$name);

            $mail->Subject  = "Message from  Contact form";
            $mail->Body     = $user_message;
            $mail->WordWrap = 50;  

            if(!$mail->Send()) {
            echo 'Message was not sent.';
            echo 'Mailer error: ' . $mail->ErrorInfo;
            } else {
            echo 'Message has been sent.';
            }

//header('Location: thank-you.html');
}