DKIM Explained
🔐 DKIM — DomainKeys Identified Mail
DomainKeys Identified Mail (DKIM) is an email authentication method that uses digital signatures to prove that an email was:
- Authorised by the owner of the sending domain
- Not altered in transit
DKIM uses public-key cryptography: the sender’s mail server signs parts of the message with a private key, and the recipient verifies the signature using a public key published in the sender’s DNS.
