分类: 网络与安全
2008-05-31 17:58:06
Receive语句的基本表达格式是:from Server A by Server B,Server A为发送服务器,Server B为接收服务器。例如:
ReturnPath: <ownerenewsdaily@***.com.cn>
Received: from ns.enet.com.cn ([202.106.124.167])
by mail.777.net.cn (8.9.3/8.8.7)
with SMTP id TAA13043;
Thu, 28 Oct 1999 19:51:28 +0800
Received: (from list@localhost)
by ns.enet.com.cn (8.9.3/8.9.0) id RAA19714
for enewsdailylist; Thu, 28 Oct 1999 17:50:30 +0800
Received: from chinanetweek.com ([210.72.235.218])
by ns.enet.com.cn (8.9.3/8.9.0)
with ESMTP id RAA19690
for < enewsdaily@enet.com.cn >; Thu, 28 Oct 1999 17:50:28 +0800
Received: from chinanetweek.com ([10.1.2.105])
by chinanetweek.com (8.9.3/8.9.0)
with ESMTP id RAA05935
for <enewsdaily@***.com.cn >; Thu, 28 Oct 1999 17:49:26 +0800
(CST) 一般最后一句Receive中的Server A就是发信人的地址,Server B是他所用的发件服务器,是邮件的起点。而第一句Receive中的Server B就是你自己的邮件接收服务器。各种服务器在信头中所加的内容并不一样,有时你在一行Receive中找不到任何IP地址或域名,这种情况可以先不管它,继续往上找。
从上面的例子中不难看出,这封信是从10.1.2.105发出(动态地址),传递途径是:chinanetweek.com → ns.enet.com.cn → mail.777.net.cn