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 1-network.biz
Found
Selector: default
(TXT on default._domainkey.1-network.biz)
v=DKIM1;k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwagQqIQqYYepoetrn9zivsCoyERhqY3//N9nDdO/799cnsdvAm8pCE/v0Y+ob2l7KG4OQ5k2B+0iNJkZi7z0eW/D+PPV+N/KRitxc5oU3NPvhwUzmCzQgkaNh4BSQmIFsUfQTY5iASiQZt4oOlJZDZuuAQjaox7eVXESwYeEcS9zKKRIWu4KMHK/vneSfD6Mp/dxtwjlVLkRmyq02KXPm+UwonSD45vOsY2XXQhS2VG+j7oCdNH+bKlS7Cypou0w1cwW3uKGx6bQ5UEJ4NcyGj0QjTUoZgZbV8m7UEeHP0aA+kLZmSe2GsTfCQ+Ks0GgY8LjKSQ8wn7uOYfnROJJ3wIDAQAB
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.