Free tools

SPF checker

Looks for the TXT record starting with "v=spf1" on the domain, the mechanism that declares which servers are authorized to send mail on its behalf.

What SPF is for

SPF tells receiving servers which IP addresses can send valid mail from your domain. Without SPF, it is easier for someone to spoof your domain in phishing campaigns.

Read-only check

This tool only reads the published record; it does not evaluate how many "include" mechanisms it uses or whether it exceeds SPF's 10 DNS-lookup limit (that is covered in the full email audit).

Frequently asked questions

Quick questions about this tool

What happens if I have no SPF?

Anyone can more easily attempt to send mail spoofing your domain, and your own emails may land in spam more often.

Do you verify the full record syntax?

We only confirm a record starting with "v=spf1" exists; we do not validate every internal mechanism.