Codeigniter contact form email

I'm trying to set up a contact form in Codeigniter (I'm running on xampp using Apache and I have a virtual host set up). I have the actual form working but when I try to link it up so that it emails the results I get an error. I've looked around and tried a few different solutions but I can't figure out what it is that I'm doing wrong.

Controller:

public function contact()
    {
            $this->load->helper('form');
            $this->load->library('form_validation');

            $this->form_validation->set_rules('name', 'your name', 'required', array('required'=>"<p class='required'>Please provide %s</p><br>"));
            $this->form_validation->set_rules('email', 'your email address', 'required', array('required'=>"<p class='required'>Please provide %s</p><br>"));


            if($this->form_validation->run() == FALSE)
            {
                $this->load->view('templates/headder');
                $this->load->view('contact');
                $this->load->view('templates/footer');
            }
            else
            {
                $config = array(
                    'protocol' => 'smtp',
                    'smtp_host' => 'smtp.mydomain.co.uk',
                    'smtp_port' => 465,
                    'smtp_user' => 'example@mydomain.co.uk',
                    'smtp_pass' => 'mypassword',
                    'charset' => 'iso-8859-1',
                    'wordwrap' => TRUE,
                );

                $message = 'This is a test message... do I work?';

                $this->load->library('email');
                $this->email->initialize($config);
                $this->email->from('ecample@example.co.uk', 'Tester');
                $this->email->to('example@mydomain.co.uk');
                $this->email->subject('New Query');
                $this->email->message($message);
                $this->email->send();

                if($this->email->send()){
                $this->load->view('templates/headder');
                $this->load->view('sent');
                $this->load->view('templates/footer');
                }
                else
                {
                $this->load->view('templates/headder');
                $this->load->view('contact');
                $this->load->view('templates/footer');
                }
            }
    }

View:

 <?php echo form_open('home/contact'); ?>
                <h3><span class='required'>*</span>Name:</h3>
                    <label><input type='text' name='name' value="<?php echo set_value('name'); ?>" maxlength="50" ></label>
                    <?php echo form_error('name'); ?>
                <h3>Company:</h3>
                    <label><input type='text' name='company' value="<?php echo set_value('company'); ?>" maxlength="100"></label>
                <h3><span class='required'>*</span>eMail:</h3>
                    <label><input type='email' name='email' value="<?php echo set_value('email'); ?>" maxlength="100"></label>
                    <?php echo form_error('email'); ?>
                <input id='submit_button' type='submit' value='Submit'>

Error Message:

A PHP Error was encountered

Severity: Notice

Message: fwrite(): send of 11 bytes failed with errno=10054 An existing connection was forcibly closed by the remote host.

Filename: libraries/Email.php

Line Number: 2131

Backtrace:

File: C:\xampp\htdocs\root\CI\application\controllers\home.php
Line: 80
Function: send

File: C:\xampp\htdocs\root\public_html\index.php
Line: 292
Function: require_once

Any advice would be much appreciated.

EDIT

I have changed the port as suggested on another post however now I am getting the following message:

A PHP Error was encountered

Severity: Warning

Message: fsockopen(): unable to connect to mail.myemail.co.uk:25 (A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. )

Filename: libraries/Email.php

Line Number: 1949

Backtrace:

File: C:\xampp\htdocs\root\CI\application\controllers\home.php
Line: 68
Function: send

File: C:\xampp\htdocs\root\public_html\index.php
Line: 292
Function: require_once

I tried changing my email address so that it was incorrect just to make sure I hadn't entered my email details wrong and got a different message to say that the connection had been forcibly closed by my host so I don't believe it's anything that simple either.

EDIT I have set a different email address up and I'm now no longer getting an error however now I'm always getting the "message failed to send" screen and I can't understand why.

EDIT

I have now used print_debugger as suggested in the comments. The result was as followed.

220 BLU436-SMTP37.smtp.hotmail.com Microsoft ESMTP MAIL Service, Version: 8.0.9200.16384 ready at Mon, 20 Apr 2015 11:25:59 -0700

hello: 250-BLU436-SMTP37.smtp.hotmail.com Hello [90.209.233.150]
250-TURN
250-SIZE 41943040
250-ETRN
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-8bitmime
250-BINARYMIME
250-CHUNKING
250-VRFY
250-TLS
250-STARTTLS
250 OK

Failed to send AUTH LOGIN command. Error: 530 5.7.0 Must issue a STARTTLS command first
Unable to send email using PHP SMTP. Your server might not be configured to send mail using this method.

User-Agent: CodeIgniter
Date: Mon, 20 Apr 2015 20:25:58 +0200
From: "Tester" <myemail@mydomain.co.uk>
Return-Path: <myemail@mydomain.co.uk>
To: myemail@mydomain.co.uk
Subject: =?SIO-8859-1?Q?=4E=65=77=20=51=75=65=72=79?=
Reply-To: "myemail@mydomain.co.uk" <myemail@mydomain.co.uk>
X-Sender: myemail@mydomain.co.uk
X-Mailer: CodeIgniter
X-Priority: 3 (Normal)
Message-ID: <553544b61c447@mydomain.co.uk>
Mime-Version: 1.0


Content-Type: multipart/alternative; boundary="B_ALT_553544b61c451"

This is a multi-part message in MIME format.
Your email application may not support this format.

--B_ALT_553544b61c451
Content-Type: text/plain; charset=SIO-8859-1
Content-Transfer-Encoding: 8bit

this is a test


--B_ALT_553544b61c451
Content-Type: text/html; charset=SIO-8859-1
Content-Transfer-Encoding: quoted-printable

this is a test

--B_ALT_553544b61c451--

I'm reading this as a MIME problem, is this correct?