这(zhè )里需(xū )要说(shuō )明的是(shì ),在我们系统里(lǐ )面(miàn )如(rú )果(guǒ )单(dān )独设置(zhì )一个子域名(míng )解(jiě )析(xī ),比(bǐ )如将主机名设置为mail,单独(dú )解析到9,那么该解析记录(lù )优先泛域名在实际(jì )使(shǐ )用(yòng )中(zhōng )作(zuò )用是(shì )非常广(guǎng )泛(fàn )的,比如(rú )实现无限二级域名功(gōng )能,提(tí )供(gòng )免费的url转发,在
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