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Reverse DNS doesn't mean much, they can set it to anything; can you forward match them to any amazon domain?

• xena 2y ago
  It's forward confirming reverse DNS. I assumed that everyone does that by default.
  • petee 2y ago
    What everyone does by default doesn't matter really here, it's that an IP owner/user can literally set the reverse to any arbitrary domain regardless if the actual domain has a record for that IP. What matters is both match, thats all I meant
    • nalllar 2y ago
      xena said "forward confirming reverse" twice which means rdns and then resolving that forward to confirm it matches.
      • petee 2y ago
        I don't know if it was edited or I missed it in the first post but you're right. I'd still be surprised if an Amazon domain resolved to a residential IP