backoffice/application/config/email.php

<?php defined('BASEPATH') OR exit('No direct script access allowed');

$config = array(
	'protocol' => 'smtp', // 'mail', 'sendmail', or 'smtp'
	'smtp_host' => 'mail.ilink-app.com',
	'smtp_port' => 587,
	'smtp_user' => 'noreply@ilink-app.com',
	'smtp_pass' => 'ilink2017GA',
	'smtp_crypto' => 'tls', //can be 'ssl' or 'tls' for example
	'mailtype' => 'text', //plaintext 'text' mails or 'html'
	'smtp_timeout' => '5', //in seconds
	'charset' => 'utf8',
	'wordwrap' => TRUE
);