How to send email to gmail account using PHPMailer?

See more:

PHP

mail

Hi there, I try to send email using PHPMailer, here my code:

require '/****/*****/******/PHPMailer-master/PHPMailerAutoload.php';
$mailltoadm = new PHPMailer;
$mailltoadm->isSMTP();     // Set mailer to use SMTP
$mailltoadm->Host = 'localhost';  // Specify main and backup SMTP servers
$mailltoadm->SMTPAuth = true;     // Enable SMTP authentication
$mailltoadm->Username = '******@*******.com';  // SMTP username
$mailltoadm->Password = '*******';   // SMTP password
$mailltoadm->SMTPSecure = 'tls';  // Enable encryption, 'ssl' also accepted
$mailltoadm->From = $emaillogin;             //EMAIL PENGIRIM
$mailltoadm->FromName = $userloginname;      //NAMA PENGIRIM
$mailltoadm->addAddress($mastermaill, $name_store); // Add a recipient (PENERIMA)
$mailltoadm->addAddress($mastermaill);  
$mailltoadm->addReplyTo($emaillogin, $userloginname);
$mailltoadm->WordWrap = 50;  // Set word wrap to 50 characters
$mailltoadm->isHTML(true);    // Set email format to HTML
$mailltoadm->Subject = 'New Order '. $name_store;
$mailltoadm->Body    = $finishorder;   //HTML SUPPORT
$mailltoadm->AltBody = convert_html_to_text($finishorder);  //NON HTML
if(!$mailltoadm->send()) 
{
   echo 'Mailer to admin Error: ' . $mailltoadm->ErrorInfo."<br/>";
} 
else 
{
   echo 'Message to admin has been sent'."<br/>";
}

why email send to ***@yahoo.com success, but not send to ***@gmail.com ?
can any one help me please.