DKIM Record Checker
DKIM signs outgoing emails. Receivers verify the signature using a public key in DNS.
DKIM lives on <selector>._domainkey.<domain>. If selector is empty, we try common ones.
Result for ibwt.info
Found
Selector: default
(TXT on default._domainkey.ibwt.info)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoMJLdAOf7i8RqATj5CV4AfvqEvibnhDMGf0PTXqRRlqMef8eAaeX5baLsYHKheolRDYjD5X6ycv8SqKUSu8jmV05zkSaF+VHtzCXMfTd05QM5cP0uqzSwBhmvrFoHFLr+AOZw48tkA9d6mRzKRUZvNpbq9lIoDhZ2UH4WiMyRmVW9K117yJH0FDkkrLUmrE7gtvEn/+srbs0y39mnWB+zLJFAbX5GRgDRzBe1OBIg2F2Rh6184gy0pIsS341JobGlt4A54iwsV4DXC8yJFpVdzdP6sjVY55yILpv52tRXsSvxxb1X9SFYTp62j5PS8eei099DbxwxR3Tu1V7WahFIwIDAQAB
FAQ
Why does DKIM require a selector?
Selectors allow rotating keys and running multiple keys per domain.
Where is DKIM published?
TXT on <selector>._domainkey.<domain>.
DKIM record exists but emails still fail DKIM?
Signing may be disabled or the selector used in email differs from DNS.
Do I need DKIM if I have SPF?
Yes, many providers use both for best deliverability and DMARC alignment.
Can I have multiple DKIM selectors?
Yes, that is common for key rotation or multiple senders.
What is DKIM?
DKIM (DomainKeys Identified Mail) adds a cryptographic signature to outgoing emails. DNS stores a public key that allows receivers to verify authenticity.
Example
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0B...
Common mistakes
- Wrong selector (the record exists but under a different selector).
- Key is split incorrectly across multiple TXT chunks (some DNS UIs break it).
- Publishing DKIM but not enabling signing on the mail provider.