To implement DKIM, you need to generate a pair of cryptographic keys (public and private). The private key is used by your email server to sign outgoing messages, while the public key is published in your DNS records. Here’s a simplified process:
Generate a DKIM key pair. Publish the public key in your domain’s DNS records. Configure your email server to use the private key for signing outgoing emails.
Once set up, recipients’ servers can use the public key to verify the signature.