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HostGraber Tools
FREE HOSTGRABER TOOL

DKIM Record Checker

Find and validate a DKIM public key using your domain and selector.

FreeNo signupPrivacy-first
● ● ●DKIM_TOOL● LIVE
Run DKIM Record CheckerEnter the required details below. Results are generated instantly without creating an account.
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✓ No signup✓ Secure processing✓ Clear next steps
UNDERSTAND THE TOOL

What is DKIM Checker?

DKIM adds a cryptographic signature to email. Receiving servers retrieve the public key at the selector-specific DNS hostname.

Use this checker after publishing a DKIM key or when mail reports a DKIM authentication failure.

READ THE OUTPUT

How to understand your results

Three signals that matter most when interpreting this tool.

01

Selector accuracy

The selector must exactly match the value used by the sending platform.

02

Public key

The p= value contains the public key receivers use to validate message signatures.

03

Key health

Missing, truncated or revoked keys cause DKIM authentication to fail.

HOSTGRABER EXPERT GUIDE

Validating signed email at the DNS layer

DKIM lets a sending system sign selected message headers and content with a private key. Receivers retrieve the matching public key from a selector-specific DNS hostname. A wrong selector, broken TXT value or retired key makes an otherwise legitimate signature unverifiable.

Keep separate selectors for different mail platforms and rotate keys without deleting the old selector until previously sent mail has cleared normal delivery windows. After configuring HostGraber email or another provider, send a real message and inspect its authentication results as well as checking DNS.

PRACTICAL GUIDE

Getting a reliable answer from this tool

Email authentication works as a system rather than as isolated records. SPF identifies permitted senders, DKIM proves message integrity and DMARC evaluates alignment against the visible From domain. A technically valid record can still produce poor deliverability if another part of the authentication chain is incomplete.

Use this tool before and after adding a mail platform, CRM, billing application or marketing sender. Keep a record of every authorized source and remove obsolete services so your domain policy stays understandable.

GO FROM DIAGNOSIS TO SOLUTION

Build it better with HostGraber

Found a configuration problem or planning your next deployment? These HostGraber services are the most relevant next steps for this tool.

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THREE SIMPLE STEPS

Use DKIM Checker in seconds

01

Enter the details

Provide the domain, IP address, workload, server specification or calculator inputs requested by the tool.

02

Run the check

HostGraber validates the input and processes the request using the appropriate DNS, network, SSL or calculation logic.

03

Act on the result

Review the output, copy it when needed, compare related checks and use the linked HostGraber resources for the next step.

COMMON QUESTIONS

DKIM Checker FAQ

Clear answers for common dkim checker questions.

Where do I find my DKIM selector?+

Your email provider supplies it during domain authentication. It also appears in the DKIM-Signature header of signed messages.

Can a domain have multiple DKIM selectors?+

Yes. Different services can use different selectors, and selectors make key rotation possible.

How quickly does a new DKIM record work?+

It works once authoritative DNS publishes it, though resolver caching can delay visibility until the TTL expires.

KEEP INVESTIGATING

Related HostGraber tools

View all tools →

SPF Checker

Validate the SPF policy that authorizes mail servers to send for your domain.

Open tool →

DMARC Checker

Inspect your DMARC policy, reporting destinations and enforcement level.

Open tool →

DNS Lookup

Inspect A, AAAA, CNAME, MX, TXT, NS and SOA records for any domain.

Open tool →
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