title: No logs for Postfix in Docker with rsyslog?
body: <p>I'm building a Docker container from <code>debian:jessie</code>.</p>
  
  <p>I've installed <code>rsyslog</code> <a href="https://askubuntu.com/a/394804/135947">this normally</a> causes <code>/var/log/mail.log</code> to be created.</p>
  
  <p>However after running some commands with <code>postfix</code> I look in <code>/var/log/</code> and can't find anything related to mail.</p>
  
  <p>Is there a step I'm missing when using <code>rsyslog</code> with Docker?</p>