这(zhè )里(lǐ )需要(yào )说明的是,在我们系统里(lǐ )面(miàn )如(rú )果单独设置(zhì )一(yī )个子域名(míng )解析,比如将(jiāng )主(zhǔ )机(jī )名(míng )设置为mail,单独(dú )解析到(dào )9,那么该解(jiě )析记录优先泛域名在实际(jì )使(shǐ )用中作用是(shì )非常广(guǎng )泛(fàn )的(de ),比(bǐ )如实(shí )现无(wú )限二级域(yù )名功能,提供(gòng )免费的url转(zhuǎn )发,在
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