这(zhè )里需(xū )要说明的是(shì ),在我(wǒ )们系(xì )统里(lǐ )面如(rú )果单独设置(zhì )一个子域名解析,比(bǐ )如(rú )将主(zhǔ )机名设(shè )置为mail,单独解析到(dào )9,那么(me )该解析记录优(yōu )先泛域(yù )名在实(shí )际使用中作(zuò )用是非常广泛(fàn )的(de ),比如(rú )实现(xiàn )无(wú )限二级域(yù )名功能,提供免费的url转(zhuǎn )发(fā ),在
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