ʲôPOP3
    POP Ϊ Post Office Protocol ļƣһֵʾִЭ飬 POP3 ĵ汾ǹ涨˼ӵ Internet ʼصʼĵЭ顣 Internet ʼĵһЭ׼򵥵˵POP3 һ򵥶ʵõʼϢЭ顣   

ʲô SMTP? 
    SMTP ȫǡSimple Mail Transfer ProtocolʼЭ顣һڴԴַĿĵַʼĹ淶ͨʼתʽSMTP Э TCP/IP Эأÿ̨ڷͻתżʱҵһĿĵءSMTP ѭ SMTP Эķʼ  
