title: finding smtp username and password for ubuntu postfix mail server?
body: <p>can someone tell me the command line call or file in an ubuntu postfix mail server to find my smtp username and password?</p>
  
  <p>Or do you even need an smtp username and password for your server to send email?</p>
  
  <p>if it is helpful i'm using PHP/Codeigniter which includes the email library described here:
  <a href="http://codeigniter.com/user_guide/libraries/email.html" rel="nofollow">http://codeigniter.com/user_guide/libraries/email.html</a></p>