can't send mail using smtp authentication

we i try to send mail using phpMailer via smtp authentication it showing error as follows

SMTP -> ERROR: Failed to connect to server: Connection timed out (110)
SMTP Error: Could not connect to SMTP host. Mailer Error: SMTP Error: Could not connect to SMTP host.

code as below

$mail = new PHPMailer();
        $mail->isSMTP();
        $mail->CharSet = 'UTF-8';
                                            // Set mailer to use SMTP
        $mail->Host = 'smtp.zoho.com'; // Specify main and backup server
        $mail->SMTPDebug = true;
        $mail->SMTPAuth = true;                               // Enable SMTP authentication
        $mail->Username = 'info@tanfidh.com';                            // SMTP username
        $mail->Password = 'xxxxxx';                           // SMTP password
        $mail->SMTPSecure = 'ssl';
        $mail->Port = 465;
        $mail->From = "info@tanfidh.com";
        $mail->FromName = "some name";
        $mail->AddAddress("xxx@tanfidh.com");
        //$mail->AddAddress($to1);
        $mail->WordWrap = 50;
        $mail->isHTML(true);
        $mail->Subject = "mail subject";
        $mail->Body    = "testmail";
        if(!$mail->send()) {
    echo 'Mailer Error: ' . $mail->ErrorInfo;
   exit();
}
else
{
    echo 'success';
}

please help me to sort out this isue