SPF Check
Check a domain's SPF record — including a warning for too many DNS lookups (RFC 7208 limit) or a missing record.
Check nowHow it works
Enter a domain
e.g. your-domain.com
Find the SPF record
Among the domain's TXT records.
Review mechanisms
incl. lookup count and all-behavior.
Benefits
Good to know about this tool
Finds and breaks down a domain's SPF TXT record into its mechanisms and checks for common pitfalls.
SPF (Sender Policy Framework) defines which servers may send email on a domain's behalf — misconfigured, legitimate mail lands in spam or spoofing becomes easier.
- Check the existing SPF record before switching email providers
- Verify the lookup count after adding a new sending service
- Diagnose deliverability issues
- Use only one SPF record per domain
- Keep the lookup count under 10, reduce nested includes otherwise
- Use '-all' instead of '~all' for strict enforcement
Frequently Asked Questions
What does '~all' at the end mean?
softfail — unlisted servers are flagged, not rejected
Can I have multiple SPF records?
Multiple SPF records found — invalid per RFC 7208, only one record is allowed.
The information, templates, scripts, calculations and recommendations provided are intended for educational and assistance purposes only. Always review and test any generated result before production use. IT Smart Service accepts no liability for misuse, data loss, outages, security incidents, or legal, financial or technical damages arising from incorrect or improper use. Responsibility for validation, testing and deployment decisions rests with the user.
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