How to use this check
Enter a public domain to inspect its SPF TXT records through the bounded MailHealth DNS path.
MailHealth normalizes the hostname, rejects local or private names and reads TXT records without storing the target in analytics.
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Authentication
Live DNS checkSPF Checker
Find the SPF TXT record for a domain and flag risky all, duplicate or lookup-heavy policies.
Health score--Live DNS check
Signal checklist
The result shows SPF policy status, record count, mechanisms and safe remediation hints.
SPF Checker
Enter a public domain to inspect its SPF TXT records through the bounded MailHealth DNS path.
Result
The result shows SPF policy status, record count, mechanisms and safe remediation hints.
Support
Keep this free result available
Use the result first. Support and promotional areas stay separate from the useful result.
- Useful result first
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- Promotions kept separate
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Guide and interpretation
How to interpret the result
A single SPF record with a strict all mechanism is usually healthier than multiple records or permissive +all.
Example
A record like v=spf1 include:_spf.example.net -all delegates authorized senders and rejects everything else.
Common issues and next steps
Multiple SPF records often cause receivers to treat SPF as permerror even if each record looks valid alone.
Merge mechanisms into one v=spf1 record, remove unused includes and keep DNS-lookup mechanisms within the SPF limit.
Methodology and limits
This check evaluates published DNS shape; it does not verify every sender IP or mailbox-provider policy.
FAQ
Does MailHealth send email during the SPF check?
No. SPF checks use DNS TXT lookup only and do not send messages.
Can I monitor changes over time?
Not in the free check. Monitoring, alerts and history are account features.