← All tools
Email security
SPF record lookup
Read the domain’s published sender policy.
Your results will appear here.
Enter a value or load an example to begin.Where your data goes
The hostname or IP address you enter is sent to Google Public DNS over HTTPS. sudor.io does not store the query. DNS resolvers may contact authoritative nameservers to resolve it.
Before you use the result
Displays the policy only; does not recursively validate SPF includes or deliverability.