通过 VB Win Sock控件与邮件服务器建立连接 ,传送符合 POP3协议的命令 ,发送用户信息至邮件服务器 ,并从服务器取得邮件头文件信息 ,分析头文件中的信息 ,取得发信者地址 ,与注册表中保存的垃圾信箱地址进行比较 ,从而从服务器端删除垃圾邮件 ,可实现邮件的过滤 Through the VB Win Sock control and mail server to establish a connection, send in line with POP3 protocol commands, send user information to the mail server, and get the header information from the server information, analysis of the header file information, get the sender address, and the registry Save the junk mail address for comparison, thus removing junk mail from the server, enabling mail filtering