- remove first !IE6 check and send Pragma and NoCache Headers

  for all IE versions to better support IE6

functions/mime.php

@@ -1970,7 +1970,7 @@ function magicHTML($body, $id, $message, $mailbox = 'INBOX') {
      // The best thing you can do for IE is to upgrade to the latest
      // version
      //set all the Cache Control Headers for IE
-     if ($isIE && !$isIE6) {
+     if ($isIE) {
          header ("Pragma: public");
          header ("Cache-Control: no-store, max-age=0, no-cache, must-revalidate"); # HTTP/1.1
          header ("Cache-Control: post-check=0, pre-check=0", false);
@@ -2027,4 +2027,4 @@ function magicHTML($body, $id, $message, $mailbox = 'INBOX') {
 
 }  // end fn SendDownloadHeaders
 
-?>
+?>