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 pch.com
Found
Selector: selector2
(TXT on selector2._domainkey.pch.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCzkpURAnLXaxY7NaiwT8BZTmfqXD+TVRPOa+uMG9vziSLQ88TIUBpTGDN3owIJm5QPU4ETUwzS2mcVaYNqU1b6Hg0yNPs08P08iQIFAS+SjWIXfwdbeKfA9vyRdvTcUwk/+bOx96jKgZOTtcTH3yccGtzQRHTItd3mi2rjxqYAmQIDAQAB;
Selector: google
(TXT on google._domainkey.pch.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCPglQRSpHSXrtCMdNAkKHg7ZG0Ar+AU1kUUMWGJ8XEHyvNnt5YS9ti23YUelohx/+uwTpten2g2IzVT+V4kBo+UbMH726POzfir6554JQrHJ6o8Jxd9v+16HBLzybJxaOWLlfV0ghQ65xUrua5DW9uF84IlNXivQFprPTO8RgJHwIDAQAB
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.