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Free ToolsSPF Record Checker

SPF Record Checker

Look up and validate the SPF record that tells inbox providers which servers are allowed to send email as you. Catch the misconfigurations that quietly send you to spam.

Email Authentication

SPF Record Checker

Look up and validate your domain's SPF record, the setting that tells inbox providers which servers may send email as you.

How it works

Validate your SPF in three steps

1

Enter your domain

Drop in the domain you send from. We strip www and https:// for you.

2

We read your SPF record

We pull the TXT records from public DNS and find your v=spf1 policy.

3

See the verdict

We flag missing records, duplicate records, and weak +all policies, with the exact fix.

Keep going

More free tools

DMARC Record CheckerCheck whether your domain publishes a DMARC policy against spoofing. DKIM Record CheckerValidate your DKIM key so your mail can be cryptographically signed. MX & DNS Record LookupLook up MX, TXT, A, NS and CNAME records for any domain.
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FAQ

Common questions

What is an SPF record?
SPF (Sender Policy Framework) is a DNS TXT record listing the servers allowed to send mail for your domain. Receivers use it to detect forgeries.
Can I have more than one SPF record?
No. A domain may publish only one v=spf1 record. Multiple records cause a permerror and providers may ignore all of them. Merge them into one.
Should I end my SPF with -all or ~all?
-all (hard fail) is strictest; ~all (soft fail) is a safe middle ground while you confirm every sender is included. Avoid +all, since it authorizes anyone.
Need to build a record from scratch?
Use our free SPF Record Generator to assemble a correct record from the providers you send through.
Authentication, done for you

Never hand-edit SPF again

MailOptimal configures SPF, DKIM and DMARC automatically and ships pre-warmed mailboxes that are ready to send, so deliverability is handled before you write a single email.

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