I’m afraid your question isn’t very specific. When you say ‘my email address’ are you referring to an address provided a corporate entity, or else a personal email address from a vendor / free-service provider? Depending on this, you’ll have to coordinate with a domain administrator / email administrator for this.
Configuring DMARC (which uses SPF and DKMI) is something that will be done on email servers by their administrator — not in the user account settings. You should take your concerns to the domain administrator / email administrator to address this, since they’ll be able to do the needful. All the best.