Could not send email: unknown Cake\Network\Exception\SocketException in cakephp3 - cakephp-3.0

Question

Okay I have been to almost all threads but I couldn't find the answer what I want.
Controller: RegistersController
namespace App\Controller;
use App\Controller\AppController;
use Cake\Auth\DefaultPasswordHasher;
use Cake\Event\Event;
use Cake\Mailer\Email;
use Cake\Routing\Router;
class RegistersController extends AppController
{
public function add()
{
$this->loadModel('Tbusers');
$tbusers = $this->Tbusers->newEntity();
if ($this->request->is('post'))
{
$tbusers = $this->Tbusers->patchEntity($tbusers, $this->request->data);
if ($this->Tbusers->save($tbusers)) {
$this->Flash->success(__('Yayie! You have been registered.'));
$baseurl = Router::url('/', true);
$email = base64_encode($this->request->data['email']);
$first_name = $this->request->data['fname'];
$last_name = $this->request->data['lname'];
$username = $first_name.' '.$last_name;
//$confirmation_link = $baseurl.'users/confirm/'.$email;
$email = new Email();
$email->template('email')
->subject('Student Portal - Signup')
->emailFormat('html')
->to($this->request->data['email'])
//->viewVars(['confirmation_link' => $confirmation_link,'username'=>$username])
->viewVars(['username'=>$username])
->from('dotnetdev555#gmail.com')
->send();
if ($email->send())
{
// Success
echo "mail sent";
}
else
{
echo "Mail not sent";
// Failure
}
return $this->redirect(['action' => 'add']);
}
}
Inside Template->Email->html I have file called
email.ctp
Hello <?php echo $username; ?>,<br/>
Thanks,<br/>
Jaymin Sejpal Founder at Student Portal
app.php
'EmailTransport' => [
'default' => [
'className' => 'Mail',
// The following keys are used in SMTP transports
'host' => 'smtp.elasticemail.com',
'port' => 2525,
'timeout' => 30,
'username' => 'dotnetdev555#gmail.com',
'password' => 'secret',
'client' => null,
'tls' => null,
'url' => env('EMAIL_TRANSPORT_DEFAULT_URL', null),
],
],
I don't know what I am missing to it. I am refferring this
http://book.cakephp.org/3.0/en/core-libraries/email.html for now.

Answer 1

The email host that you are using might be using smtp protocol , so in your app.php . Try editing you className parameter to 'Smtp'
'EmailTransport' => [
'default' => [
'className' => 'Smtp',
// The following keys are used in SMTP transports
'host' => 'smtp.elasticemail.com',
'port' => 2525,
'timeout' => 30,
'username' => 'dotnetdev555#gmail.com',
'password' => 'secret',
'client' => null,
'tls' => null,
'url' => env('EMAIL_TRANSPORT_DEFAULT_URL', null),
],
],