Free domain tool

DKIM Selector Check

Validate a DKIM public key using a domain and selector.

The selector comes from the email provider or the DKIM-Signature header (`s=`). DomainPulse does not guess it and will not claim DKIM is absent without an exact selector.

What this test checks

The exact selector record, key algorithm, strength, flags and revocation state.

Why this matters

DKIM lets a receiver verify that signed message content was authorized by a domain.

How to fix common problems

Use the selector supplied by your email provider and replace malformed, revoked, or weak keys.

FAQ

Why is a selector required?

There is no reliable universal way to discover every selector. Missing discovery is not evidence that DKIM is missing.