情况：电子邮件从托管我们生产网站的服务器发送。电子邮件正文包含电子邮件的路由。
问题：这是一个 sendmail.cf 参数吗？如果是，哪个参数？
示例：来自电子邮件正文。
Received: by 10.76.162.102 with SMTP id xz6csp105065oab; Tue, 8 Jan 2013 00:14:35 -0800 (PST)
Received: from mail-la0-f53.google.com (mail-la0-f53.google.com [209.85.215.53]) by mx.google.com with ESMTPS id id8si106587047lab.0.2013.01.08.00.14.32 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 08 Jan 2013 00:14:33 -0800 (PST)
Received: by mail-la0-f53.google.com with SMTP id fn20so132960lab.40 for <marion@efactor.com>; Tue, 08 Jan 2013 00:14:32 -0800 (PST)
Received: by 10.112.29.229 with SMTP id n5mr26704397lbh.130.1357632872532; Tue, 08 Jan 2013 00:14:32 -0800 (PST)