title: Postfix Body Checks Regex Example Needed
body: <p>Postfix and Regex Experts:</p>
  
  <p>I have a requirement to use Postfix Body Checks to add an empty alt="" parameter to an image link in the body of outgoing emails.  (I have no control on the generation of the image link.)  Here is an exerpt of the email body:</p>
  
  <pre><code>&lt;img src=3D"http://xxxxxxx.com:81/OT000001MQ=3D=3D.GIF?D=3D2016-03-23" wid=
  th=3D"1" height=3D"1"/&gt;
  </code></pre>
  
  <p></p>
  
  <p>I need Postfix Body Check to add and empty alt parameter <code>alt=3D""</code> to this link for improving SPAM test score.</p>
  
  <p>I do succeed with this Body Check Regex, but it's an ugly solution:</p>
  
  <pre><code>/height=3D"1"/  REPLACE th=3D"1" height=3D"1" alt=3D""/&gt;
  </code></pre>
  
  <p>My regex is selecting the entire line of the body text.  Could you please suggest a better regex?  Thank you.</p>