title: Gmail mark email as spam when sent from Amazon EC2 + postfix
body: <p>I have setup EC2 and installed postfix + dovecot + squirrelmail. When I send emails from squirrelmail to my gmail account, it went into spam.</p>
  
  <p>I checked my IP on <a href="http://www.spamhaus.org" rel="nofollow">http://www.spamhaus.org</a>, it says "IP is listed on the Policy Block List (PBL)" Here's the link: <a href="http://www.spamhaus.org/pbl/query/PBL1522076" rel="nofollow">http://www.spamhaus.org/pbl/query/PBL1522076</a></p>
  
  <p>I've been told I need to use AWS SES instead. I'm quite new in linux and amazon, what should I do best?</p>
  
  <p>Thanks in advance</p>