Too many SPF lookups resolve to nothing
CODE REDWhat it means
N of your SPF lookups return no records at all (example.net). More than two of these is a permanent error. Receivers abandon SPF for your whole domain.
How to fix it
Remove or correct the entries that resolve to nothing. They are usually vendors you stopped using, or a typo in a hostname.
Check your own domain
This page describes the condition. To find out whether your domain has it, run the SPF test or the full checkup, which examines every record at once.
Understand it properly
This page covers one condition. For the whole picture, What is SPF, and the ten-lookup limit, or start at the Health Library.
Where this comes from
We judge this against RFC 7208 section 4.6.4. Every finding on this site cites the specification behind it so you can check the work rather than take our word for it.
Other SPF conditions
SPF_VOID_LOOKUP_EXCEEDED
Every fix on this site is yours to implement. If you would rather someone did it, I take this work directly.