SPF Record Checker
Read a domain's SPF policy, expand every include, and confirm it stays inside the ten-lookup limit that causes silent failures when exceeded.
- Limits No file upload · Up to 2,000 runs a day
- Where it runs Runs on our server; no file is uploaded.
- Cost Free, with the limits above. No account needed.
Where to find it
Every address below opens the same tool. The first address is the one to bookmark and share.
- spf.openvibe.toolsPrimary
People also call this
What it's for: Check and validate a domain's SPF record. See which servers may send mail, catch syntax errors and count DNS lookups. Instant.
What trips people up: What happens if SPF exceeds ten DNS lookups? Receiving servers return a permanent error and may treat your mail as unauthenticated, so legitimate messages can land in spam.
- spf record checker
- spf validator
- check spf
- email authentication
- spf lookup limit
Use it from code
POST https://openvibe.tools/api/v1/tools/spf/run- No account needed: anonymous calls run on the lowest quota tier; a token with
tools.tool.runraises it. - It answers with the result.
curl -X POST https://openvibe.tools/api/v1/tools/spf/run \
-H 'Content-Type: application/json' \
-d '{"input":{"target":"example.com"}}'Inputs: JSON Schema · OpenAPI · from JavaScript: tools.run("spf", …) in openvibe-sdk · How the API works
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