这里(lǐ )需(xū )要说(shuō )明(míng )的是,在我(wǒ )们系统里面如果(guǒ )单(dān )独设置一个子域名解(jiě )析,比如(rú )将(jiāng )主(zhǔ )机名设置(zhì )为(wéi )mail,单独解析到9,那么(me )该解析记(jì )录优先(xiān )泛域名在实际使(shǐ )用(yòng )中作(zuò )用是非常广(guǎng )泛(fàn )的,比(bǐ )如实现无限(xiàn )二级(jí )域(yù )名功能(néng ),提供免费的(de )url转(zhuǎn )发,在
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