title: CodeIgniter Can't sent email
body: <p><br>
  I am using fedora in my DEV machine and tring to send mail via codeignigter.<br>
  the sendmail is working fine, the PHP mail() function is working fine as well.<br>
  but for some reason, codeigniter isnt working with the following settings that it also configured in the php.ini: </p>
  
  <pre><code>$config['protocol'] = 'sendmail';
  $config['mailpath'] = '/usr/sbin/sendmail';
  </code></pre>
  
  <p>the error that i am getting is:</p>
  
  <pre><code>Exit status code: 64
  Unable to open a socket to Sendmail. Please check settings.
  Unable to send email using PHP Sendmail. Your server might not be configured to send mail using this method.
  </code></pre>
  
  <p>Thanks</p>