Laravel在站点迁移后发送邮件问题

I know this question has been asked many times before, but I have attempted a lots of these solutions without any success.

Hello i have issue in sending mail to laravel as its working fine but after migrating site to other server with ssl and now having issue as its giving below error.

Expected response code 220 but got code \"\", with message \"\"

below is the code used for .end and mail.php

.env

MAIL_DRIVER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=465
MAIL_USERNAME=myemail@gmail.com
MAIL_PASSWORD=mypassword
MAIL_ENCRYPTION=tls

mail.php

<?php

return [

     'driver' => env('MAIL_DRIVER'),
     'host' => env('MAIL_HOST'),
     'port' => env('MAIL_PORT'),
     'from' => [
        'address' => env('MAIL_FROM_ADDRESS', 'developer.eww@gmail.com'),
        'name' => env('MAIL_FROM_NAME', 'GBAN'),
    ],
    'encryption' => env('MAIL_ENCRYPTION','tls'),
    'username' => env('MAIL_USERNAME'),
    'password' => env('MAIL_PASSWORD'),
    'sendmail' => '/usr/lib/sendmail -i -t',
    'markdown' => [
        'theme' => 'default',

        'paths' => [
            resource_path('views/vendor/mail'),
        ],
    ],
];