这(zhè )里(lǐ )需要(yào )说(shuō )明的(de )是(shì ),在我(wǒ )们系统里(lǐ )面(miàn )如(rú )果单独设置一(yī )个子域名解析(xī ),比如(rú )将主机名(míng )设置为(wéi )mail,单独解(jiě )析到9,那么该解析记录优先(xiān )泛域名在(zài )实(shí )际使用中(zhōng )作用(yòng )是非(fēi )常(cháng )广泛的,比(bǐ )如实现无限(xiàn )二级域名功能,提(tí )供(gòng )免费的(de )url转发,在
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