SMTP协议原始命令码和工作原理( 二 )


Receibed: from galangal.org (turmeric.com [104.128.23.115] by mail .bieberdorf.edu....
c. 被人手动添加在最后面的received行:
Received: from galangal.org ([104.128.23.115]) by mail .bieberdorf.edu (8.8.5)
Received: from lemongrass.org by galangal.org (8.7.3)
Received: from graprao.com by lemongrass.org (8.6.4)

推荐阅读