这(zhè )里(lǐ )需要说明的是,在我们系统里(lǐ )面(miàn )如果(guǒ )单独设置一个子(zǐ )域名解(jiě )析,比如(rú )将主(zhǔ )机(jī )名设置为(wéi )mail,单独解(jiě )析到(dào )9,那么(me )该(gāi )解析(xī )记录优(yōu )先泛域名在实际使(shǐ )用(yòng )中作(zuò )用(yòng )是非常广泛的,比(bǐ )如(rú )实现无限二级(jí )域名(míng )功(gōng )能,提供(gòng )免(miǎn )费的url转发,在(zài )
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