这(zhè )里需要说明的是,在我们系(xì )统里面如(rú )果(guǒ )单独设置一个(gè )子域名解(jiě )析(xī ),比(bǐ )如(rú )将(jiāng )主(zhǔ )机名设(shè )置为(wéi )mail,单独解析到(dào )9,那么该(gāi )解(jiě )析记录优先泛(fàn )域名(míng )在(zài )实(shí )际(jì )使(shǐ )用中作用是非常广泛的,比(bǐ )如(rú )实(shí )现无限二级域名功能,提(tí )供免费的url转(zhuǎn )发(fā ),在
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