Reply to post: Re: Hacking back against forged attacks

US Congress mulls first 'hack back' revenge law. And yup, you can guess what it'll let people do

CrazyOldCatMan Silver badge

Re: Hacking back against forged attacks

added the ability to put the correct MX DNS info records in place to specify which servers are authorized to send e-mail for the domain, and I haven't seen it happen since.

Ahh bless. You think anyone takes any notice of that? AOL certainly doesn't (yes, I've had bounces from AOL of spam that's come no-where near my systems and the originating IP isn't even in the same country as me).

In short, like most of SMTP - those domain SPF records are only any use if receiving domains check them. And a large minority don't.

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