TXT registry DNS

What type of hardware are you using: VPS bought online
What YunoHost version are you running: 11.2.3
How are you able to access your server: The webadmin

Describe your issue

I made a diagnostic in yunohost

Some DNS records are missing or incorrectly configured for the domain cremisimo.com (mail category)

Please refer to the documentation at DNS zone configuration | Yunohost Documentation if you need help configuring DNS records.

The following DNS record appears not to follow the recommended settings

Tipo: TXT
Nombre: mail._domainkey
Valor Actual: “v=DKIM1; p=”
Valor esperado: “v=DKIM1; h=sha256; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC3tuYfzsGmAzDqpNLh5j1A3DOEQJJDJeio1yhxJSbB92HVx87b0L9MNiFFYy61Ql0KTqqA7ZGJfbvQxGRYy4yKvJrj7XaUDYeDNFEnGArk9NJpzO1RPzonz8RKlHNO/CczU8MKyR+YAc1qd+rRVbUnXbhcCzIXJzRuLA4s/oUnkwIDAQAB”

How can I implement this?
I am using Cloudflare free

Share relevant logs or error messages

DNS issue