Comment by xena

3 months ago

It's forward confirming reverse DNS. I assumed that everyone does that by default.

3 comments

xena

Reply
petee  3 months 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  3 months ago

    xena said "forward confirming reverse" twice which means rdns and then resolving that forward to confirm it matches.

    • petee  3 months 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