这(zhè )里(lǐ )需要说明的是,在我们(men )系统里面(miàn )如果(guǒ )单独设置一(yī )个子(zǐ )域(yù )名解析,比如(rú )将主机名(míng )设置(zhì )为(wéi )mail,单独(dú )解(jiě )析到(dào )9,那么该解(jiě )析(xī )记(jì )录优先泛(fàn )域(yù )名在实际使(shǐ )用中(zhōng )作用是非常广泛的,比如实(shí )现(xiàn )无限二级域名功(gōng )能,提供免(miǎn )费的url转发,在
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