laravel email cannot connect to mail server

am trying to send email from my laravel app after a user registers but it keeps giving me this error in the network tab,

"message": "Connection could not be established with host mail.i-scbank.com [ #0]

The app is hosted in a shared hosting(cpanel)

i tried with mailtrap and it worked, but when i tried it with my mail server, i got that error message, i even created a new email account, but it still did not work,

Here is my .env code

MAIL_DRIVER=smtp 
MAIL_HOST=mail.eloike.com
MAIL_PORT=587
MAIL_USERNAME=info@eloike.com
MAIL_PASSWORD=*****
MAIL_FROM_ADDRESS=info@eloike.com
MAIL_ENCRYPTION=tls
MAIL_FROM_NAME="Stones"

here is my config/mail.php code

<?php
return [
    'driver' => env('MAIL_DRIVER', 'smtp'),
    'host' => env('MAIL_HOST', 'smtp.mailgun.org'),
    'port' => env('MAIL_PORT', 587),
    'from' => [
        'address' => env('MAIL_FROM_ADDRESS', 'hello@example.com'),
        'name' => env('MAIL_FROM_NAME', 'Example'),
    ],
    'encryption' => env('MAIL_ENCRYPTION', 'tls'),
    'username' => env('MAIL_USERNAME'),
    'password' => env('MAIL_PASSWORD'),
    'sendmail' => '/usr/sbin/sendmail -bs',
    'markdown' => [
        'theme' => 'default',
        'paths' => [
            resource_path('views/vendor/mail'),
        ],
    ],
];

pls what am i doing wrong and how can i make the email to be sending

via Chebli Mohamed