这里(lǐ )需要(yào )说明的是,在(zài )我们系统里面(miàn )如(rú )果单独设置一个子域名(míng )解析(xī ),比如将主机(jī )名设(shè )置为mail,单独解(jiě )析(xī )到9,那么该解析(xī )记(jì )录优(yōu )先泛(fàn )域名在实(shí )际使(shǐ )用中(zhōng )作用是(shì )非(fēi )常广泛的(de ),比(bǐ )如实(shí )现无限二(èr )级域名功(gōng )能,提供免费的url转(zhuǎn )发,在
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