http://bugtracker.ispconfig.org/index.php?do=details&task_id=1483

marknl

2011-08-09 65b81ba8899237e26336e6c65e83668b21f35dcc

 interface/lib/classes/functions.inc.php

@@ -52,7 +52,7 @@
            unset($path_parts);
         }

         $header = "From: $from\nReply-To: $from\n";
         $header = "Return-Path: $form\nFrom: $from\nReply-To: $from\n";
         $header .= "MIME-Version: 1.0\n";
         $header .= "Content-Type: multipart/mixed; boundary=$uid\n";