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 loro.ch
Found
Selector: selector1
(TXT on selector1._domainkey.loro.ch)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDcRgmTfQ1BDTkIJsdJcerjThQOijAd6cyhhsQhDlvmFnE29YX0AuLgCsamLs22MQ+bMDWXwVhC3H54QCVdIlxnl7mwJA3E+mIOgMAOdQWQZGjUZE4cQhIyjDk22buV/Y3SbrUqLxMCwlrTW70bgo+48NM2V7Iaas8hOjzpzJc03wIDAQAB; n=1024,1495501422,1511399022
Selector: selector2
(TXT on selector2._domainkey.loro.ch)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwASOrG4KQfM55rDgRzu0wPG2INfp0WhNqc6BwuY+TDNUiTEBmEhPlGfDjJ456ZUzm+cCkjLv/dowCrTsOqVy0gy554V4VfSvTTq1/o3JuNxSvEHYrO17T4hp4wTdb1NaRiBQQ3LE8AlmU8HxJs6Qc2RMUna853Of5Lj8gdXNfp21B6WxM2PnQtGuP8fih3CL2KVnZjEN1csux2td6XxdDEBActsUCJA2XJZGJL35WNQCnOSVm8s++PrJaic8H1ykBqKNAy8RqGlI9WIBy2FsnaQQb6W+UL5Ym5MwH9lPtXQgsvcPQFDdLB/jH0l/F8E+Fmntg3P55+OBVh76cQ1ruQIDAQAB;
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.