title: setup postfix SMTP on amazon ec2
body: <p>Im trying to setup a postfix SMTP mail server on my amazon ec2 instance. i followed this guide <a href="http://cybart.com/how-to-install-and-configure-postfix-on-amazon-ec2/" rel="nofollow">http://cybart.com/how-to-install-and-configure-postfix-on-amazon-ec2/</a> and many other ones on configuring the main.cf</p>
  
  <p>everytime i try to telnet my mail server mail.domain.com smtp it trys to connect to address XXX.XXX.XXX.XX but then operation is timed out and im unable to connect to remote host.</p>