这里需要说明的是(shì ),在我(wǒ )们(men )系统(tǒng )里面如(rú )果(guǒ )单(dān )独(dú )设(shè )置一个子域名解析,比如(rú )将主机名设置为mail,单(dān )独解析到9,那(nà )么该解(jiě )析记(jì )录优先(xiān )泛域名在实(shí )际使用中(zhōng )作(zuò )用是非(fēi )常广(guǎng )泛的,比(bǐ )如(rú )实(shí )现(xiàn )无(wú )限二级(jí )域(yù )名功能(néng ),提供(gòng )免费的url转发,在(zài )
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