title: sSMTP no longer works - 'Invalid response: 501 5.5.4 HELO/EHLO argument MYEMAILADDRESS@gmail.com invalid, closing connection.'
body: <p>As the title/tags say, I run sSMTP on Linux for a PHP server.</p>
  
  <p>Whenever I try to send an email, I get these errors (that do not show up in PHP, only in the logs/ 'sudo service sendmail status' or 'sudo service php5-fpm status')</p>
  
  <p>From /var/log/mail.log</p>
  
  <pre><code>Mar 31 03:34:34 ip-172-31-22-38 sSMTP[2004]: Creating SSL connection to host
  Mar 31 03:34:34 ip-172-31-22-38 sSMTP[2004]: Invalid response: 501 5.5.4 HELO/ELO argument MYEMAILADDRESS@gmail.com invalid, closing connection. v74sm9147441pfa.7- gsmtp (MYEMAILADDRESS@gmail.com)
  Mar 31 03:34:34 ip-172-31-22-38 sSMTP[2004]: SSL connection using (null)
  Mar 31 03:34:34 ip-172-31-22-38 sSMTP[2004]: Cannot open smtp.gmail.com:587
  </code></pre>
  
  <p>From /var/log/mail.err and mail.warn</p>
  
  <pre><code>Mar 31 03:34:10 ip-172-31-22-38 sSMTP[1997]: Cannot open smtp.gmail.com:587
  Mar 31 03:34:34 ip-172-31-22-38 sSMTP[2004]: Invalid response: 501 5.5.4 HELO/EHLO argument MYEMAILADDRESS@gmail.com invalid, closing connection. v74sm9147441pfa.7 - gsmtp (MYEMAILADDRESS@gmail.com)
  Mar 31 03:34:34 ip-172-31-22-38 sSMTP[2004]: Cannot open smtp.gmail.com:587
  </code></pre>
  
  <p>My /etc/ssmtp/ssmtp.conf</p>
  
  <pre><code>#
  # Config file for sSMTP sendmail
  #
  # The person who gets all mail for userids &lt; 1000
  # Make this empty to disable rewriting.
  root=MYEMAILADDRESS@gmail.com
  
  # The place where the mail goes. The actual machine name is required no
  # MX records are consulted. Commonly mailhosts are named mail.domain.com
  mailhub=smtp.gmail.com:587
  
  # Where will the mail seem to come from?
  #rewriteDomain=
  
  # The full hostname
  hostname=MYEMAILADDRESS@gmail.com
  
  AuthUser=MYEMAILADDRESS@gmail.com
  AuthPass=[removed]
  UseSTARTTLS=YES
  # Are users allowed to set their own From: address?
  # YES - Allow the user to specify their own From: address
  # NO - Use the system generated From: address
  FromLineOverride=YES
  </code></pre>
  
  <p>My revaliases</p>
  
  <pre><code>root:MYEMAILADDRESS@gmail.com:smtp.gmail.com:587
  localusername:MYEMAILADDRESS@gmail.com:smtp.gmail.com:587
  </code></pre>