title: Postfix - Replace Reply-To
body: <p>I needed to replace the Reply-To header in PostFix</p>
  
  <p>I have this</p>
  
  <p>/etc/postfix/header_checks</p>
  
  <pre><code>/^Reply-To:[[:space:]]+(.*)/ REPLACE Reply-To: ${1} &lt;sales@acme.com&gt;
  </code></pre>
  
  <p>However the Mail header comes in as:</p>
  
  <pre><code>Reply-To: Administrator &lt;support@acme.com&gt; &lt;sales@acme.com&gt;
  </code></pre>