Codeigniter email class fails to send email due connection was aborted by the software in your host machine

Question

This is the error I'm getting when using the email class with Google smtp settings.

Severity: Notice

Message: fwrite(): send of 5 bytes failed with errno=10053 An established connection was aborted by the software in your host machine.

Filename: libraries/Email.php

Line Number: 2250

Backtrace:

this is the email class config at the controller file that I have written to send the message

$config = array(
                'protocol'  => 'smtp',
                'smtp_host' => 'smtp.gmail.com',
                'smtp_port' => 465,
                'smtp_user' => 'xxxx@gmail.com',
                'smtp_pass' => 'xxxxx',
                'mailtype'  => 'html',
                'charset'   => 'utf-8'
                );