无法验证密码。使用codeigniter时出错

Question

当我尝试使用codeigniter“email”库发送邮件时，它会发出身份验证错误。我已经修改了“sendmail.ini”文件中的“auth_username”和“auth_password”。 我无法从哪里开始解决问题。请帮助....

$config = Array(
        'protocol' => 'smtp',
        'smtp_host' => 'ssl://smtp.googlemail.com',
        // 'smtp_host' => 'localhost',
        // 'mailpath' => "/usr/bin/sendmail",
        'smtp_port' => '465',
        'smtp_user' => $sender,
        'smtp_pass' => $senderPass,
        'mailtype' => 'html',
        'charset' => 'iso-8859-1',
        'wordwrap' => TRUE
    );

    $this->load->library('email');

    $this->email->initialize($config);

    $this->email->set_newline("\r\n");
    $this->email->from($sender);
    $this->email->to($to);
    $this->email->subject($subject);
    $this->email->message($body);
    if(!$this->email->send())
    {
        show_error($this->email->print_debugger());
    }