Free tool
Free SPF record checker
Look up the SPF record on any domain and check it authorises the servers you send from.
Why it matters
What this record proves
SPF publishes which servers may send mail for your domain. A missing, duplicated or overflowing record means receivers cannot confirm your sending server is allowed.
- Enter the root domain you send from, not the mailbox address.
- Confirm there is exactly one SPF record — two records invalidate both.
- Check the record stays under ten DNS lookups.
- Make sure every sending platform you use is included.
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