HTTP/1.1 400 Bad RequestServer: Microsoft-IIS/5.0Date: Wed, 31 Dec 1997 20:37:29 GMTContent-Type: text/HtmlContent-Length: 87<html><head><title>Error</title></head><body>The parameter is incorrect. </body></Html>
又或者FTP過去看到：
Connected to 127.0.0.1.220 sql Microsoft FTP Service (Version 5.0).User (127.0.0.1:(none)):
TELNET到對方的25 端口去發信的時候，會出現：
220 sql Microsoft ESMTP MAIL Service, Version: 5.0.2195.4453 ready at Thu, 1 Jan 1998 04:47:48 +0800
看
到沒有
