这里需要(yào )说明的是,在我们系(xì )统里(lǐ )面如(rú )果(guǒ )单独设置(zhì )一(yī )个(gè )子域(yù )名解析(xī ),比(bǐ )如将主机名(míng )设(shè )置为mail,单独解析到(dào )9,那(nà )么该解析记录优先(xiān )泛(fàn )域名在实际使(shǐ )用中作用(yòng )是(shì )非常广泛的,比如实现无限二级域名功(gōng )能,提(tí )供(gòng )免(miǎn )费的(de )url转(zhuǎn )发(fā ),在
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