SPF none — no record published
The domain publishes no SPF record, so receivers have no list of authorised senders.
What causes it
- No record was ever created, or it was published on the wrong name — SPF belongs on the root domain, not on a _spf subdomain.
How to fix it
Publish a TXT record on the domain itself containing v=spf1, your provider include, and ~all. The generator below produces the exact string.
Check your domain
Also searched for: no spf record, spf record not found.