-your mailaddress isn't on any of our lists.
+Your mail address isn't on any of our lists.
-If you still receive mails from our servers please check the mailheaders of
-the mail carefully. The recipient-address is coded into the Return-Path.
+If you still receive mails from our servers please check the headers
+of the mail carefully. The recipient-address is coded into the
+Return-Path.
Example: