title: PHPMailer() Delivery is not allowed to this address
body: <p>I moved my wordpress site from one server to WPengine server.</p>
  
  <p>I had a code for sending email which still works fine on old server, but on new server I am getting next message</p>
  
  <p>SMTP ERROR: RCPT TO command failed: 550 Delivery is not allowed to this address. 2015-09-14 15:29:34<br>
  CLIENT -> SERVER: QUIT 2015-09-14 15:29:34<br>
  SMTP Error: The following recipients failed: info@saveonlife.co.uk</p>
  
  <p>The code is:</p>
  
  <pre><code>    $mail-&gt;IsSMTP(); 
      $mail-&gt;SMTPDebug  = 1;                     
      $mail-&gt;SMTPAuth   = true;                 
      $mail-&gt;Host       = "mail.webcreationuk.com"; 
      $mail-&gt;Port       = 25;                   
      $mail-&gt;Username   = "webcreationUsername@somedomain.com";
      $mail-&gt;Password   = "some_password";        
      $mail-&gt;SetFrom('info@myemaildomain.co.uk', 'Quote Form');
      $mail-&gt;AddReplyTo("info@myemaildomain.co.uk","Quote Form");
  
      $v_Msg = "&lt;span&gt;Some email message&lt;/span&gt;";
      $mail-&gt;AltBody = "To view the message, use an HTML email viewer!";
      $mail-&gt;AddAddress("info@myemaildomain.co.uk", "Quote Form");
      $mail-&gt;MsgHTML($v_Msg);
      $mail-&gt;Send()
  </code></pre>
  
  <p>On new server this is working only if I for From,ReplyTo and To addresses set the same address which I set for SMTP username.</p>
  
  <p>I am not really familiar with PHPMailer, so any help is very good. Thanks</p>