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SPF flattening and lookup count

SPF Checker

Read the live SPF record for a domain, expand every include, redirect, a, mx and exists reference, and see whether the record stays within the RFC 7208 limit of 10 DNS lookups. Over the limit, receivers return permerror and SPF fails silently.

Enter the sending domain, not a subdomain prefix such as track. Example: ecomail.cz
Ready for a sending domainThe lookup verdict, published SPF record, warnings, expansion tree and raw JSON appear here after each run.
Resolving SPF...