Your domain use cloudfare DNS, You also configure DKIM in your server

Yes, if you're using Cloudflare DNS for your sphere, it's still recommended to set up DKIM( DomainKeys Identified Mail) for your dispatch garçon.

 DKIM is a protocol that allows dispatch receivers to corroborate the authenticity of dispatch dispatches transferred from your sphere. It involves adding a digital hand to your gregarious dispatch dispatches, which can also be vindicated by the philanthropist's dispatch garçon using a public key published in your DNS records.

 Using DKIM can help help dispatch spoofing and phishing attacks, which can help cover the character of your sphere and insure that your licit dispatch dispatches are delivered to your intended donors. While Cloudflare DNS can help with some aspects of dispatch security, similar as SPF( Sender Policy Framework) and DMARC( Domain- grounded Communication Authentication, Reporting and Conformance) records, these don't give the same position of protection as DKIM. thus, it's a good idea to set up DKIM for your dispatch garçon, indeed if you're using Cloudflare DNS for your sphere.