这(zhè )里需(xū )要(yào )说明的是,在我们(men )系统(tǒng )里面如果(guǒ )单独设置(zhì )一个(gè )子域名解析(xī ),比如(rú )将主(zhǔ )机(jī )名(míng )设置(zhì )为mail,单独解析(xī )到9,那么(me )该(gāi )解(jiě )析记录优先泛域名在(zài )实际使(shǐ )用中作用(yòng )是非常(cháng )广泛的,比如实现无(wú )限二级域(yù )名功(gōng )能,提(tí )供免(miǎn )费的url转发,在
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