如果信头没有被伪造,一般可以看出是谁发的,即使送信人的信息不对。我曾经就通过 IP找到的给我发广告的IP然后report给了it的ISP,然后世界就清净了。下面举个例子 ,这个信头是Dell发的广告Email: ×××××××××××××××××××××× Delivered-To: Received: by 10.214.59.3 with SMTP id h3cs127577qaa; Fri, 14 Nov 2008 09:12:19 -0800 (PST) Received: by 10.142.109.16 with SMTP id h16mr504371wfc.145.1226682738434; Fri, 14 Nov 2008 09:12:18 -0800 (PST) Return-Path: Received: from mh.dell.m0.net (mh.dell.m0.net [209.11.164.66]) by mx.google.com with