title: jenkins Error sending to the following INVALID addresses:xxx@yyy.com
body: <p>Jenkins gives following after completing test execution:</p>
  
  <blockquote>
    <p>Error sending to the following INVALID addresses: valid emailid</p>
  </blockquote>
  
  <p>jenkins build log:</p>
  
  <pre class="lang-none prettyprint-override"><code>Build step 'Execute shell' marked build as failure
  Email was triggered for: Failure
  Sending email for trigger: Failure
  Sending email to:  valid emailid 
  Error sending to the following INVALID addresses : valid emailid
  Finished: FAILURE
  </code></pre>