这里(lǐ )需要说(shuō )明的是(shì ),在我们系统里面(miàn )如果单独(dú )设置一个子域名(míng )解析,比如(rú )将主(zhǔ )机(jī )名设(shè )置为(wéi )mail,单独(dú )解(jiě )析到9,那(nà )么该(gāi )解析记录优(yōu )先(xiān )泛域名在实际(jì )使(shǐ )用(yòng )中作用(yòng )是非常广泛的,比(bǐ )如实现无限二级域(yù )名(míng )功能,提供(gòng )免(miǎn )费的url转(zhuǎn )发,在(zài )
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