这里需(xū )要(yào )说(shuō )明(míng )的是,在我(wǒ )们系统(tǒng )里面(miàn )如果(guǒ )单独设置一个(gè )子域名(míng )解析,比如将主机(jī )名设(shè )置为mail,单独解(jiě )析(xī )到9,那么该解(jiě )析(xī )记(jì )录(lù )优先泛域名在实际(jì )使用中作用是非常(cháng )广泛的,比如实(shí )现无限(xiàn )二级(jí )域名(míng )功能,提供(gòng )免费的url转发,在
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