mailer symfony 4 not working

Question

I started a project using symfony 4 and the mailer doesn't work, however it should be easy. before you ask, if i copy past the login and password from my code i'm able to log into my mail account, also i also tried with a netcourrier mail account, also the 2 way authentification is not active and i allowed less secure app to access the mail account. Here's my conf: in my .env:

MAILER_URL=gmail://*******@gmail.com:********@localhost

in my controller:

public function contact( \Swift_Mailer $mailer){

$message = (new \Swift_Message('Hello Email'))
        ->setFrom('*****@gmail.com')
        ->setTo('*******@gmail.com')
        ->setBody(
            $this->renderView(
                // templates/emails/registration.html.twig
                'email/registration.html.twig',
                array('url' => $url)
            ),
            'text/html'
        );
        $mailer->send($message);
return $this->render(
            'email/index.html.twig');}

and the error i get doing so is :

Connection could not be established with host smtp.gmail.com [ #0]

Answer 1

I think this is not an issue with the mailer, but with gmail. I copied your steps to try to connect through the smtp server of gmail, but got the same error. When using a different MAILER_URL (a different smtp-server) in the .env file, everything works like it should.