Swift_TransportException in StreamBuffer.php line 268:
Connection could not be established with host gnom.websitewelcome.com [ #0]

Route::any('mail', function() {
    $cliente = Auth::user();
    Mail::send('backend.emails.bills',
        [

        ],
            function ($m) use ($cliente) {
            $m->from('micorreo@midominio.com', 'Mi nombre');
            $m->to('alguien@sudominio.com', 'Factura')->subject('Asunto cualquiera.');
        });
});

MAIL_DRIVER=smtp
MAIL_HOST=gnom.websitewelcome.com
MAIL_PORT=465
MAIL_USERNAME=micorreo@midominio.com
MAIL_PASSWORD=mipass
MAIL_ENCRYPTION=ssl