DomainPulse
FREE DOMAIN TOOL

DKIM Selector Check

Inspect a specific DKIM public key without guessing whether DKIM exists.

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 DomainPulse checks

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

Common problems

Missing selected key, malformed tags, revoked keys and weak RSA material.

FAQ

Why is a selector required?

DKIM keys live under selector-specific DNS names; reliable universal discovery does not exist.

Where do I find it?

Use your mail provider settings or the s= value in a DKIM-Signature header.