这里需(xū )要说明的是,在我们系(xì )统里面如果单(dān )独(dú )设置一(yī )个(gè )子域名(míng )解析,比(bǐ )如将主机(jī )名(míng )设置为mail,单独解析到(dào )9,那(nà )么该解(jiě )析(xī )记(jì )录优先泛域名在实际(jì )使(shǐ )用中作(zuò )用是(shì )非常广泛(fàn )的,比如实现无限(xiàn )二级域(yù )名(míng )功(gōng )能(néng ),提供(gòng )免(miǎn )费的url转发,在
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