| if /^\s*Received:.*Authenticated sender.*\(Postcow\)//^\s*Received:.*Authenticated sender:(.+)/  REPLACE Received: from localhost (localhost [127.0.0.1]) (Authenticated sender:$1endif/^\s*X-Enigmail/        IGNORE/^\s*X-Mailer/          IGNORE/^\s*X-Originating-IP/  IGNORE/^\s*X-Forward/         IGNORE
 |