这里(lǐ )需要说明的是,在我(wǒ )们(men )系统里面(miàn )如果(guǒ )单(dān )独设置(zhì )一个子(zǐ )域名解析(xī ),比如(rú )将主机名设置(zhì )为mail,单独解(jiě )析到9,那么该(gāi )解(jiě )析(xī )记录优先泛域(yù )名(míng )在实际(jì )使用中作用(yòng )是(shì )非(fēi )常广泛(fàn )的,比(bǐ )如实(shí )现无限二级域(yù )名功能,提供免费的url转(zhuǎn )发,在
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