1. Setting Up DKIM: Generate a DKIM key pair (private and public keys). Publish the public key in your DNS records and configure your email server to sign outgoing emails with the private key. 2. Creating an SPF Record: Create an SPF record that lists all the IP addresses and servers authorized to send emails on behalf of your domain. Publish this record in your DNS. 3. Configuring DMARC: Create a DMARC policy that specifies how you want your emails to be handled if they fail DKIM or SPF checks. Publish this policy in your DNS and set up an email address to receive DMARC reports.