3 ms·
This allows you to verify the mx record of the domain you're sending to, not the sender.
by tedunangst 5y ago
This allows you to verify the mx record of the domain you're sending to, not the sender.
- wolverine876 5y agoThanks. Without trusting the MX record, how do you know from what address ask for the MX over HTTPS? Maybe I should just look it up myself!
- tedunangst 5y agoIn theory, you cache a good copy from sometime before the attack.