title: Sending email notifications from Nagios / Postfix
body: <p>I would like to ask, is there some possibility to sending emails from nagios via postfix?</p>
  
  <p>1, I have setup nagios to check some services, also I have installed postfix.</p>
  
  <p>2, I have valid email account, i.e.: patrick@mydomain.com</p>
  
  <p>3, just send email from this account</p>
  
  <p>Thank you!</p>
  
  <p>Patrick</p>