Honestly those are used as weights now in some kind of obscure calculation (or maybe not so obscure calculation but I still don't understand it).
What I really learned during that time is that mail servers have well known IP addresses and reputations. And you can say all you want SPF/DKIM fixes that, but the reality is when google sends your email (even with your custom domain) it gets received.
Honestly those are used as weights now in some kind of obscure calculation (or maybe not so obscure calculation but I still don't understand it).
What I really learned during that time is that mail servers have well known IP addresses and reputations. And you can say all you want SPF/DKIM fixes that, but the reality is when google sends your email (even with your custom domain) it gets received.