SPF Lookup

Enter a domain to fetch its SPF record — the DNS entry that lists which servers may send email on its behalf.

What is SPF?

SPF (Sender Policy Framework) is a TXT record starting with v=spf1 that lists the IP addresses and services allowed to send email for a domain. Receiving servers check it on every incoming message; mail from unauthorized servers fails SPF and is far more likely to land in spam or be rejected outright.

Reading an SPF record

ip4: / ip6: — explicit IPs allowed to send
include: — delegates to another service's SPF (e.g. Google, Klaviyo, Mailchimp)
~all — soft-fail everything else; -all — hard-fail everything else
Watch out: more than 10 DNS lookups in a record breaks SPF entirely

Good SPF protects your sending. To protect your sender reputation you also need a clean list — validate your email addresses with SkipBounce before campaigns go out.