SPF/DKIM/DMARC Effectiveness
Discussions focus on the setup, usefulness, limitations, and issues with email authentication protocols SPF, DKIM, and DMARC for preventing spoofing, improving deliverability, and combating spam.
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Having SPF/DKIM in DNS records doesn't prevent that.
Isn't this the problem that DKIM is supposed to solve?
I'd heard that the spammers are better at using DKIM correctly than legitimate users nowadays... ?
Do you support DKIM/SPF etc? Are these still useful?
No, would that help? I am however using SPF and one of DKIM / DMARC (I forget which). But anyway, I can live with a mail missing here and there. It is just annoying and isn't right.
You forgot about the mess that is SPF, DKIM, and DMARC.
It needs DKIM so other people cannot send e-mail pretending to be you.
You might want to set up a DMARC policy for your domain. Since I set mine to "p=reject" I haven't had any such issues. DMARC extends DKIM and SPF, and you (typically) need to pass at least one of those to pass DMARC.
spammers can and do trivially setup SPF, DKIM and DMARC
My SPF, DKIM, and DMARC are on point. No idea why it goes to gmail's spam.