You don’t need a valid MX. It’ll try the A record absent a MX. | Hacker News

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		ceejayoz on Aug 16, 2021 \| parent \| context \| favorite \| on: Email Authenticity 101: DKIM, Dmarc, and SPF You don’t need a valid MX. It’ll try the A record absent a MX.

justusthane on Aug 16, 2021 [–]

Yes, but if you set a null MX record than it wouldn't, right?

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