电子邮件无法使用ci 3.0应用程序

Question

我正在使用带有smtp电子邮件的ci 2.2，并且像往常一样工作，目前工作正常，但当我将我的应用程序升级到ci 3.0时，它给了我错误：

Failed to authenticate password. Error: 535 Authentication Failed Unable to send email using PHP SMTP. Your server might not be configured to send mail using this method.

现在，这是使用ci app 2.2 email code'的代码：

function sendEmail($to,$subject,$body,$from = "Do not reply")
{
    $CI =& get_instance();
    $CI->load->library('email');
    $config['protocol']     = 'smtp';
    $config['smtp_host']    = 'ssl://smtp.myserviceprovider.com';
    $config['smtp_port']    = '465';
    $config['smtp_timeout'] = '7';
    $config['smtp_user']    = 'email@myemail.com';
    $config['smtp_pass']    = 'email_password';
    $config['charset']      = 'utf-8';
    $config['newline']      = "\r\n";
    $config['mailtype']     = 'html'; // or html
    $config['validation']   = TRUE; // bool whether to validate email or not
    $CI->email->initialize($config);
    $CI->email->from('emaily@myemail.com',$from);
    $CI->email->to($to); 
    $CI->email->subject($subject);
    $CI->email->message($body);
    if($CI->email->send())
    {
        return true;
        //echo $CI->email->print_debugger();
    }
    else
    {
        return false;
        //echo $CI->email->print_debugger();
    }
}

//I'm using a custom helper to send email, this is working code

//This code is not working with ci 3.0

$config['protocol']     = 'smtp';
$config['smtp_host']    = 'ssl://smtp.myserviceprovider.com';
$config['smtp_port']    = '465';
$config['smtp_timeout'] = '7';
$config['smtp_user']    = 'email@myemail.com';
$config['smtp_pass']    = 'email_password';
$config['charset']      = 'utf-8';
$config['newline']      = "\r\n";
$config['mailtype']     = 'html'; // or html
$config['validation']   = TRUE; // bool whether to validate email or not
$this->email->initialize($config);
$this->email->from('email@myemail.com','FirstName LastName');
$this->email->to('to@too.com'); 
$this->email->subject(rand(1000,9999));
$this->email->message('body of email');
if($this->email->send())
{
    echo $this->email->print_debugger();
}
else
{
    echo $this->email->print_debugger();
}

This code is not working. I don't know why, using ci 3.0。是否有我遗漏的东西，因为如果代码正在使用ci 2.2而没有问题，它也应该与其他部分一起工作。