SPF Checker
Review SPF policy and basic configuration warnings.
No email address required. Only public DNS records are queried. Reports can be printed or saved as PDF for free.
What this checks
Published public DNS configuration and common problems. A healthy DNS configuration is not a guarantee of message delivery or inbox placement.
Need assistance applying a fix? Contact our IT specialists — entirely optional.
How to use this free SPF checker
SPF authorizes which sending servers can use your domain in the SMTP envelope. Enter the domain or URL above and review the returned records and status details. The results reflect the information available when the check runs.
Understanding your SPF results
SPF authentication alone does not guarantee DMARC alignment; the authenticated envelope domain must align with the visible From domain.
An SPF record with too many DNS lookups may fail with a permanent error. Review includes carefully rather than adding more entries.
Need help fixing a problem?
Read our SPF support and troubleshooting service, explore other free diagnostic tools, or contact Remote IT Support for optional professional assistance.