While you are likely right about RFCs, general mail administrator
hygiene like having rptr's, etc. is something we've all had to work on
since the days of AOL being the 1000lb gorilla and enforcing postmaster
guidelines. RFCs typically codify real-world practices not drive them.
My argument is since you can't join Google's postmaster tools until you
have SPF or DKIM, well that sort of answers it for you from Google's
perspective:
https://support.google.com/mail/answer/9981691?hl=en
On 4/19/2022 3:27 PM, Jaroslaw Rafa via mailop wrote:
If it doesn't, SPF check should be
ignored. There is no RFC that says you MUST have a SPF record.
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