What’s “SPF permerror” and how does it tank deliverability?
What it is:
- Permanent error in SPF evaluation
- Cannot be retried
- SPF result is undefined/fail
Common causes:
- More than 10 DNS lookups in SPF chain
- Syntax errors in SPF record
- Multiple SPF records for same domain
- Circular references
Deliverability impact:
- SPF fails for all mail
- DMARC alignment fails (SPF side)
- Must rely on DKIM alone
- Many receivers penalize or reject
Fix:
- Reduce lookups (flatten, consolidate)
- Fix syntax errors
- Remove duplicate SPF records
Permanent documentation error prevents any verification. Must be corrected at the source.
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