php - Failed to authenticate password. Error: 535-5.7.8 Username and Password not accepted

I send mail using CodeIgniter, but it returns this error:

Failed to authenticate password. Error: 535-5.7.8 Username and
Password not accepted

Here is my code:

 $this->load->library('email');
        $config = Array(
            'protocol' => 'smtp',
            'smtp_host' => 'ssl://smtp.googlemail.com',
            'smtp_port' => 587,
            'smtp_user' => 'my@gmail.com',
            'smtp_pass' => 'mypass',
            'mailtype'  => 'html',
            'charset'   => 'iso-8859-1'

        );
        $this->load->library('email', $config);
        $this->email->from('my@gmail.com');
        $this->email->to('send@gmail.com');
        $this->email->subject('This the test');
        $this->email->message('this is the test message');
        if (!$this->email->send())
        {
            echo $this->email->print_debugger();


        }

I've configured my Xampp server using this question: How to configure XAMPP to send mail from localhost?

Answer

Change the smtp port to 465 if you are using ssl.