1. Enable SSL/TLS Encryption Most email service providers offer SSL/TLS encryption by default. Ensure that your email marketing platform uses these protocols to encrypt data during transmission. Check the settings of your email service provider and enable SSL/TLS if it is not already activated.
2. Set Up SPF Records To set up SPF, you need to add a TXT record to your domain's DNS settings. This record will specify which IP addresses or mail servers are authorized to send emails on behalf of your domain. Make sure to keep this record updated as your email infrastructure changes.
3. Configure DKIM DKIM requires generating a pair of cryptographic keys: a private key that signs outgoing emails and a public key that is published in your domain's DNS records. Email service providers usually offer tools to help you generate and configure these keys.
4. Implement DMARC Policies Create a DMARC record in your DNS settings that defines how your domain handles emails that fail SPF and DKIM checks. You can start with a "none" policy to monitor the effectiveness of SPF and DKIM, and gradually move to more stringent policies like "quarantine" or "reject."