找了很多网页, 有效的是MX可以设置不同的域名,但PTR只设置一个即可... 如果设置为一个IP为两个PTR,则在进行测试时,会发生DNS ROBBINS,即一次找这个,一次找那个. 切记. .... I know this is an old thread, but recently had a customer request multiple PTR names for a single IP, and they keep coming back asking, is it done, i…