Error using Swiftmailer on Symfony2's project in production - php

Question

I have my website in production, with Hostinger, and with the same parameters and config I can't send emails in production but I could in developing mode. I have changed the parameters and config files with others settings I have seen in other questions but with no success. Anyway, the error I get is the following:
Connection could not be established with host smtp.gmail.com
[Connection timed out #110] 500 Internal Server Error -
Swift_TransportException
My parameters.yml file:
parameters:
...
mailer_transport: gmail
mailer_encryption: ssl
mailer_auth_mode: login
mailer_host: smtp.gmail.com
mailer_user: xxxxx#gmail.com
mailer_password: xxxx
...
My config.yml file:
# Swiftmailer Configuration
swiftmailer:
transport: gmail
host: smtp.gmail.com
username: xxxxx#gmail.com
password: xxxx
My controller file:
public function kontaktuaAction()
{
$kontaktua = new Kontaktua();
$form = $this->createForm(new KontaktuaType(), $kontaktua);
$request = $this->getRequest();
if ($request->getMethod() == 'POST') {
$form->bind($request);
if ($form->isValid()) {
$message = \Swift_Message::newInstance()
->setSubject($kontaktua->getGaia())
->setTo('xxxxx#gmail.com')
->setFrom($kontaktua->getEmaila())
->setBody($kontaktua->getIzena().'(e)k, email helbidea '.$kontaktua->getEmaila().' duena hurrengo mezu hau'.
' bidali dizu: '.$kontaktua->getMezua());
$this->get('mailer')->send($message);
return $this->redirect($this->generateUrl('kontaktua'));
}
}
return $this->render('TaldeaBundle:Default:kontaktua.html.twig', array(
'form' => $form->createView()
));
}

Answer 1

The following settings works for me:
config.yml under swiftmailer
encryption: ssl
auth_mode: login
parameters.yml:
mailer_transport: smtp
mailer_host: smtp.gmail.com
mailer_user: #gmail_user_name
mailer_password: #gmail_password