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SPF Checker

Check the domain's SPF record. Syntax correctness, allowed senders.

Why check your SPF record

SPF (Sender Policy Framework) is a TXT record in your domain’s DNS that lists the servers allowed to send mail on your behalf. If the record is missing or malformed, recipients cannot verify that a message really came from you — and mailbox providers are far more likely to junk or reject it.

This tool queries your domain’s TXT records directly via DNS and shows the SPF record it finds. Make sure it includes every service that sends email for you (your SMTP provider, CRM, transactional mail) and that it ends with ~all or -all.

Common SPF mistakes

  • Multiple SPF records on one domain — only a single record is valid;
  • More than 10 DNS lookups (the include/redirect limit) — the record stops working;
  • A forgotten sending service — its mail lands in spam;
  • +all instead of ~all — it authorizes anyone to send as you.