这(zhè )里(lǐ )需要说(shuō )明(míng )的是,在我(wǒ )们系(xì )统里(lǐ )面如果(guǒ )单独设(shè )置(zhì )一个子域名解析,比如将主机(jī )名设置(zhì )为mail,单(dān )独解析到(dào )9,那么(me )该(gāi )解析记(jì )录优先(xiān )泛(fàn )域名在实际(jì )使用(yòng )中(zhōng )作用是(shì )非常广泛的,比如实(shí )现(xiàn )无限二级域名(míng )功能,提供免(miǎn )费的url转(zhuǎn )发(fā ),在(zài )
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