Out data indicates Cakemail supports full DMARC compliance. See: https://support.cakemail.com/hc/en-us/articles/360056294574-Authenticating-my-domain-with-SPF-DKIM-and-DMARC-protocols
To configure DKIM, see https://support.cakemail.com/hc/en-us/articles/360056294574-Authenticating-my-domain-with-SPF-DKIM-and-DMARC-protocols
Contact Cakemail support for SPF setup.