SPF record checker
SPF record checker retrieves domain SPF records and reports supported syntax issues. Review mail authorization before investigating email delivery problems.
SPF record checker: what this tool checks
SPF record checker retrieves SPF records for the hostname in a submitted URL and applies the application's syntax checks. It lists each discovered record with its validation result. Website owners can use it to review published mail authorization after changing email providers or editing domain DNS.
How to use it
- Enter a URL using the exact hostname whose SPF record you want to inspect.
- Submit it and review the record count and any listed syntax errors.
- Compare the returned text with your email provider's required configuration before making DNS changes.
Understanding your results
The overall result is valid when exactly one SPF record is found and the supported syntax checks report no errors. This is a limited record validation, not a full message authentication simulation. A subdomain and the parent domain may publish different records, so choose the hostname deliberately.
Frequently asked questions
Does a valid SPF result guarantee email delivery?
No. Delivery also depends on the actual sending infrastructure, message authentication, recipient filtering, reputation, and other factors. This tool does not send a test email or inspect a mailbox.
Can I fix a warning by adding another SPF record?
Do not add records blindly. Review the existing authorization and your provider's instructions. The tool expects one discovered SPF record, so duplicating a record can create another problem.
Continue your review
Inspect related DNS data with DNS Lookup, verify the selected host using IP Lookup, and review exposed contact addresses through the Plaintext email checker.
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