SPF void lookup limit exceeded

RFC 7208 allows at most two DNS lookups that return nothing. A third makes the whole record permerror.

What causes it

• An include: pointing at a provider you have stopped using, whose record has since been withdrawn.
• A typo in an include: target.
• An a or mx mechanism naming a host that no longer resolves.

How to fix it

Void lookups are invisible until they break: the record looks fine and the lookup count looks fine. Check each include: target still returns an SPF record, and delete any that do not.

Check your domain

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