https://dmarc.org/2017/03/can-i-use-dmarc-if-i-have-only-deployed-spf/
"... you can use DMARC with only SPF – and absolutely should, at least as far as enabling reporting – ..." On Mon, Apr 27, 2020, 3:55 PM Ralph Seichter <ab...@monksofcool.net> wrote: > * pe...@pajamian.dhs.org: > > > DKIM is not required for DMARC. > > Now you're just being ridiculous, and have earned yourself a membership > in my killfile. "DMARC [...] builds on the widely deployed SPF and DKIM > protocols" (https://dmarc.org "What is DMARC?"). > > -Ralph >
