Sadly they can’t, there are Mailbox Providers that expect SPF Records, so to maintain deliverability to those, you have to keep SPF records in place and can’t switch to an DKIM only DMARC.
/ Tobias From: dmarc <[email protected]> On Behalf Of Murray S. Kucherawy Sent: Sunday, June 18, 2023 2:42 AM To: Ken Simpson <[email protected]> Cc: Douglas Foster <[email protected]>; Jan Dušátko <[email protected]>; [email protected] Subject: Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal On Sat, Jun 17, 2023 at 2:40 PM Ken Simpson <[email protected]<mailto:[email protected]>> wrote: FWIW, I'd like to chuck my hat in the ring on the side of removing SPF from the next iteration of DMARC. As the operator of an email delivery service with tens of millions of primarily uncontrolled senders on web hosting servers, it would be great if domain owners could assert via their DMARC record that receivers should only trust DKIM-signed email. Can these senders not accomplish the same thing by removing the SPF record altogether? -MSK, participating
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