Exit status code: 72 Unable to open a socket to Sendmail. Please check settings
<pre><code>$this-&gt;load-&gt;library('email');
$this-&gt;config-&gt;load('email');
$config['protocol'] = 'sendmail';
$config['mailpath'] = '/usr/sbin/sendmail';
$config['charset'] = 'iso-8859-1';
$config['wordwrap'] = TRUE;
$this-&gt;email-&gt;initialize($config);
$this-&gt;email-&gt;from('vjdabur@gmail.com', 'vijay');
$this-&gt;email-&gt;to('vjdabur@gmail.com');
$this-&gt;email-&gt;subject('Email Test');
$this-&gt;email-&gt;message('Testing the email class.');
$this-&gt;email-&gt;send();
echo $this-&gt;email-&gt;print_debugger();
</code></pre>

<p>I dont know what I have missed in above code, I have sendmail installed in my <code>usr/sbin/sendmail</code> path.I am trying to send mail in PHP <code>Codeigniter</code>.But I am getting </p>

<blockquote>
  <p>Exit status code: 72  Unable to open a socket to Sendmail. Please check settings.</p>
</blockquote>