Codeigniter SMTP电子邮件错误

在我的codeigniter应用程序中使用SMTP时，我无法发送电子邮件。

SO上有很多类似的问题，但没有一个能解决我的问题，所以这就是我再次提问的原因。

这是我得到的错误：

hello: 
The following SMTP error was encountered:
Failed to send AUTH LOGIN command. Error:
from: 
The following SMTP error was encountered:
to: 
The following SMTP error was encountered:
data: 
The following SMTP error was encountered:
The following SMTP error was encountered:
Unable to send email using PHP SMTP. Your server might not be configured to send mail using this method.
User-Agent: CodeIgniter
Date: Tue, 22 Apr 2014 22:54:12 -0400
From: 
Return-Path: 
To: myemail@gmail.com
Subject: =?utf-8?Q?Request_from_C&J_Builders_Contact_form?=
Reply-To: "donotreply@C&JBuilders.us" 
X-Sender: donotreply@C&JBuilders.us
X-Mailer: CodeIgniter
X-Priority: 3 (Normal)
Message-ID: <53572b54551be@C&JBuilders.us>
Mime-Version: 1.0

Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
From: jeff
Email: jeff@gmail.com
Phone: 555555555
Message: asdfs fds
Here's my config/email.php:
<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');
$config['useragent'] = "CodeIgniter";
$config['protocol'] = "smtp";
$config['_smtp_auth']   = TRUE;
$config['smtp_host'] = "smtp.zoho.com";
$config['smtp_user'] = "donotreply@cjbuilders.info";
$config['smtp_pass'] = "mypassword";
$config['smtp_port'] = 465;
$config['wordwrap'] = TRUE;
$config['wrapchars'] = 76;
$config['mailtype'] = "text";
$config['charset'] = "utf-8";
$config['validate'] = FALSE;
$config['priority'] = 3;
$config['crlf'] = "'r'n";
$config['newline'] = "'r'n";
$config['bcc_batch_mode'] = TRUE;
$config['bcc_batch_size'] = "200";
?> 

这是我发送电子邮件的控制器片段：

// sends the email to 
$this->email->from('donotreply@C&JBuilders.us');
$this->email->to('myemail@gmail.com');
$this->email->subject('Request from C&J Builders Contact form');
$this->email->message('From: '.$this->input->post('name')."'n".
              'Email: '.$this->input->post('email')."'n".
              'Phone: '.$this->input->post('phone')."'n".
              'Message: '.$this->input->post('message')."'n");
$this->email->send();
echo $this->email->print_debugger();