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 tradexinter.biz
Found
Selector: dkim
(TXT on dkim._domainkey.tradexinter.biz)
v=DKIM1; h=sha256; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyeYd30Ke8AmH4PagLcoLYRaKALJedFSWoAuq2P8rXTQoyEyPZyyELBAfAf+MjJFX0HXtwDC5N8fyqvbGLJ9eWfAYO/mrkMds/FEgQlLXchdgCEth3njTA9a+QWSXYYohB9/j2IM1SalXyi00Abf1RC/SNzPf6IrmwnfQregKSKn8VAjFRgl9wBJlRKm44FfdLyZ4RpOZg4QQ0UPQUhnMzDou55XodaEkjAgDs2C/oemV0221k54h5ohzDMgYyY/vJyxbOlVqJ1duSo1ng9jcxX4gVmtp+0wiR+nm8boIp0zhSD6eauSiNkAstBdWNtyprRejTmXYWZ2mZfq5k29GIQIDAQAB
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.