How to use the SPF Checker
Use this checker to find the SPF policy published for an email-sending domain and list its direct include dependencies.
- Enter the domain used in the message Return-Path, without an email address, URL, or path.
- Confirm that one SPF record begins with v=spf1.
- Compare the listed include domains with the services that are allowed to send mail for you.
How to read the result
The SPF record is the policy receivers evaluate. Includes delegate part of that policy to another domain. More than one SPF record is invalid, while no record means a successful TXT lookup found no SPF policy.
Example
- Input
example.com- What to look for
- Look for one v=spf1 record, the providers you expect under Includes, and an ending qualifier such as -all or ~all.
Before you act on the result
This checker lists direct includes but does not recursively evaluate the full SPF tree, count every DNS lookup, or prove that a particular message passes SPF alignment.
Read the SPF Checker and Record Guide for the technology overview and troubleshooting steps.