How do DNS or SPF lookup errors affect trust?
DNS resolution failures:
- Records not found or timeout
- Authentication cannot complete
- Results in temperror or failure
SPF lookup limit (10 DNS lookups):
- Exceeding causes permerror
- All SPF checks fail
- DMARC sees SPF as failed
Impact on trust:
- Receivers see authentication failures
- May treat as suspicious
- Consistent failures damage reputation
Detection:
- Use SPF validators to count lookups
- Check DNS record health
- Monitor authentication pass rates
- DNS issues are technical, but consequences feel like reputation problems.
- Registry errors prevent credential verification. Fix the paperwork system.
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