PHP Mailer ERROR Connection while sending Email

PHP Mailer ERROR Connection while sending Email

hi
i'm using PHPmailer to send email from my website to my email account which is hosted on zoho . sending email address is
info@adamrifau.com . 
please note that if i disable smtp auth with out any issue i can send mails.
and accroding my hosting provider ZOHO is blocking their ip address 148.163.69.159
192.30.138.82 . and they have informed me to request white list these ip address  in remote server.



  $mail = new PHPMailer;
  $mail->isSMTP();                                 
  $mail->Host = 'smtp.zoho.com';                  
  $mail->SMTPAuth = false;                           
  $mail->Username = ' info@adamrifau.com';         
  $mail->Password = 'password'
  $mail->SMTPSecure = 'tls';                       
  $mail->Port = 587;                               

  $mail->setFrom(' info@adamrifau.com', 'Adam Rifau');
  $mail->addReplyTo(' info@adamrifau.com', 'Adam Rifau');
  $mail->addAddress(' adamrifau@adamrifau.com');


Error: SMTP connect() failed.