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 paytm.com
Found
Selector: default
(TXT on default._domainkey.paytm.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC+22c9TJ7qMNFM3AVRhNdVWyNNV1km5uFdN52Z2l3/oGTOxBLyIj1gGIUINsMdPXL4CiF82k8jLQT9e8JkG3+jxKrUsrzxUVxw1b4nO8u2JBapWj3pLMHG2v8GsnGb9cgpL+enHVI1bYdVuHrRP9aFvkrmuI5o4rSt1eG6CdSKvQIDAQAB
Selector: google
(TXT on google._domainkey.paytm.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCQ2wHGJmQznirfd92Wrw3mbRsNfDA+JemjPa7okrx4XDZK2Zv//MtNLQeammM5UJoEzcb5Et6Zu7bz1bupIoZJgV3Wma7fBd+010TKgxcPkz/i7dW7beC9yWsT54GqlJLyDpJO00xM0P0g95YtMexSBzmQqAj4es4K1Wq6pzr3xwIDAQAB
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.