这里(lǐ )需要说(shuō )明的是,在我们系统里面如(rú )果单独设置一(yī )个子(zǐ )域名解析(xī ),比(bǐ )如将(jiāng )主(zhǔ )机(jī )名设置为mail,单(dān )独解析到(dào )9,那(nà )么该解(jiě )析(xī )记录优先泛域名在(zài )实际使(shǐ )用中作(zuò )用是非常(cháng )广(guǎng )泛的,比如实现(xiàn )无限(xiàn )二级(jí )域(yù )名功能(néng ),提供免费的url转(zhuǎn )发,在
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