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I like it. You should also add checks for ipv6 glue records. I advertise ipv6 dns servers but I do not yet have glue, so you still need to connect to my dns servers over ipv4. According to your tool I just have to convince google to add AAAA records to their MX targets and I'm set, but I'm not :)


Thanks for the suggestion.. I added a few more DNS-related checks. I think I have the tests/logic right but please let me know if you spot any errors.




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