Step-by-Step Guide to Setting Up SPF
    Log in to your domain's DNS management console.
    Create a new TXT record.
    In the "Name" field, enter your domain name (e.g., @ for the root domain).
    In the "Value" field, enter your SPF record (e.g., v=spf1 include:example.com ~all).
    Save the record and allow some time for DNS propagation.
Step-by-Step Guide to Setting Up DKIM
    Log in to your email service provider's control panel.
    Generate a DKIM key pair (public and private keys).
    Add the public key to your domain's DNS as a TXT record.
    Configure your email server to sign outgoing emails with the private key.
    Save the changes and allow some time for DNS propagation.
Step-by-Step Guide to Setting Up DMARC
    Log in to your domain's DNS management console.
    Create a new TXT record.
    In the "Name" field, enter _dmarc.
    In the "Value" field, enter your DMARC policy (e.g., v=DMARC1; p=none; rua=mailto:dmarc-reports@example.com).
    Save the record and allow some time for DNS propagation.