title: Emails sent by WSO2 EMM has double quotes in the RCPT TO recipient
body: <p>I can send messages and receive messages sent by EMM , but the email clients like outlook and gmail show email recipient like this, appending the mail server hostname</p>
  
  <pre><code>Mail to: user@example.com@mailserver.example.com
  </code></pre>
  
  <p>If I examine the message, I can see that wso2 put double quotes in email address. I think that this is the cause of my probloem.</p>
  
  <pre><code>RCPT TO: &lt;"user@example.com"&gt;
  </code></pre>
  
  <p>How can  I configure EMM to send emails without quotes?</p>
  
  <pre><code>RCPT TO: &lt;user@example.com&gt;
  </code></pre>