Setting Up SPF To set up SPF, you need to add a TXT record to your domain's DNS settings. This record lists the IP addresses or domains authorized to send email on behalf of your domain. For example: "v=spf1 include:example.com ~all". This indicates that emails from example.com are permitted to send emails for your domain.
Configuring DKIM Implementing DKIM involves generating a pair of cryptographic keys: a public key and a private key. The public key is added to your DNS records, while the private key is used by your mail server to sign outgoing emails. Your email service provider usually offers tools to generate and manage these keys.
Enabling DMARC DMARC requires you to publish a DNS record specifying your policy and providing an email address for reports. For example: "v=DMARC1; p=reject; rua=mailto:dmarc-reports@example.com". This policy instructs recipient servers to reject emails that fail SPF or DKIM checks and to send reports to the specified address.