Connection could not be established with host smtp.163.com [Connection timed out #110]

Connection could not be established with host smtp.163.com [Connection timed out #110]

框架配置 用SMTP.163.com

端口用   465

'mailer' => [
    'class' => 'yiiswiftmailerMailer',
    'useFileTransport' =>false,
    'transport' => [
        'class' => 'Swift_SmtpTransport',
        'host' => 'smtp.163.com',
        'username' => 'yuandanghui',
        'password' => 'admin123',
        'port' => '465',
        'encryption' => 'ssl',
    ],