这(zhè )里(lǐ )需要说(shuō )明的是,在我们系(xì )统(tǒng )里面如(rú )果单(dān )独设置一个(gè )子(zǐ )域名解析,比如(rú )将主机名(míng )设置为mail,单独解析(xī )到(dào )9,那么该解析记录(lù )优先(xiān )泛域名在实际使(shǐ )用(yòng )中(zhōng )作(zuò )用是(shì )非常广泛的(de ),比如实现(xiàn )无(wú )限二级域名功能(néng ),提(tí )供免(miǎn )费的url转发,在
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