这里需要说明(míng )的是,在我们系(xì )统里(lǐ )面(miàn )如(rú )果单独(dú )设(shè )置(zhì )一个子域名解(jiě )析(xī ),比如将(jiāng )主(zhǔ )机名设置为mail,单(dān )独解(jiě )析到9,那么(me )该(gāi )解(jiě )析(xī )记录优先泛(fàn )域(yù )名在(zài )实(shí )际使用(yòng )中作用是(shì )非常广泛(fàn )的,比如实(shí )现无限(xiàn )二级域名功能(néng ),提供免费的url转发,在
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