Can a domain have two SPF records?

No. Multiple SPF TXT records usually cause SPF permerror and should be merged into one record.

What is the SPF DNS lookup limit?

SPF evaluation allows up to ten DNS lookups from mechanisms such as include, a, mx, ptr, exists, and redirect.

Should I use -all or ~all?

Use ~all while migrating if needed. Use -all when you are confident every legitimate sender is included.

SPF tool

SPF Checker

Inspect the live SPF TXT record and see whether your sender policy is clear, safe, and under the lookup limit.

SenderDNSReceiver

SPF

Enter a domain to run the check.

What this checker validates

The tool finds v=spf1 records at the root domain, warns about duplicate SPF records, counts lookup-heavy mechanisms, and explains the final all policy.

Recommended first fix

Keep one SPF record per domain, include only services that actually send mail, avoid +all, and keep the estimated DNS lookup count below ten.