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 mhttrade.biz
Found
Selector: default
(TXT on default._domainkey.mhttrade.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxZgJis3mdi1HHNStPOgIZNsjJqVRm2CJRyBP4ag+G7l4iUJ6q1OiPcNHR47Elpyx5WlLgdBIUjkBJbXki1cZYFq5yHIvmtJ0NjJjHTBO6NSrohXiHELc00htwj0DLDq9d95ClBMEP7drPF2gDcG+BByyeiBqY8TsgXqtrOdDhZUgpU/Siq72iwfefZWMuSQkL3nI0nVaaykVHAO/F+6fSXFy6semPyfhbRnt3/mlDZWGOZ2jmeoBorO3l9xngDhSarX+eBwJ4wHMHAWoxTGU7oWOqDJpsFmQKvgfKzt1ag3x2rhbJcnHMfk3JIjU4kqSucldacE7mUGQENIZMFag4QIDAQAB;
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.