Authentication-Results: example.com;
          dkim=pass (good signature) header.d=example.com
Received: from mail-router.example.com
              (mail-router.example.com [192.0.2.1])
          by auth-checker.example.com (8.11.6/8.11.6)
              with ESMTP id i7PK0sH7021929;
          Fri, Feb 15 2002 17:19:22 -0800
DKIM-Signature:  v=1; a=rsa-sha256; s=gatsby; d=example.com;
          t=1188964191; c=simple/simple; h=From:Date:To:Subject:
          Message-Id:Authentication-Results;
          bh=sEuZGD/pSr7ANysbY3jtdaQ3Xv9xPQtS0m70;
          b=EToRSuvUfQVP3Bkz ... rTB0t0gYnBVCM=
Authentication-Results: example.com;
          auth=pass (cram-md5) smtp.auth=sender@example.com;
          spf=fail smtp.mailfrom=example.com
Received: from dialup-1-2-3-4.example.net
              (dialup-1-2-3-4.example.net [192.0.2.200])
          by mail-router.example.com (8.11.6/8.11.6)
              with ESMTPA id g1G0r1kA003489;
          Fri, Feb 15 2002 17:19:07 -0800
From: sender@example.com
Date: Fri, Feb 15 2002 16:54:30 -0800
To: receiver@example.com
Message-Id: <12345.abc@example.com>
Subject: here's a sample

Hello!  Goodbye!