这里需要说(shuō )明(míng )的是,在我们系统里(lǐ )面如果单(dān )独(dú )设置一(yī )个子(zǐ )域名解(jiě )析(xī ),比如将(jiāng )主机名设(shè )置为mail,单独(dú )解(jiě )析到9,那么(me )该解析记录(lù )优先(xiān )泛域名在(zài )实际使(shǐ )用中(zhōng )作用是非常(cháng )广泛的,比如实(shí )现无限(xiàn )二(èr )级(jí )域名功(gōng )能,提供(gòng )免(miǎn )费的url转发,在
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