DNS error certificate generation

Traefik Traefik v2 (latest)
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Hi everyone, I'm having trouble generating certificates. The environment is docker swarm and here are my compose:

Traefik configuration:

version: '3'

services:
  traefik:
    image: traefik:v2.5
    ports:
      - "80:80"
      - "443:443"
      # (Optional) Expose Dashboard
      - "8080:8080"  # Don't do this in production!
    networks:
      - traefik-public
    volumes:
      # - /volume1/docker/traefik:/etc

      - /var/run/docker.sock:/var/run/docker.sock:ro
      - traefik-public-certificates:/certificates
    command:
      # Definizione configurazioni globali
      - --global.checkNewVersion
      - --global.sendAnonymousUsage

      # Definizione configurazione dashboard
      - --api.dashboard=true
      - --api.insecure=true
      
      - --api.debug=true # enable additional endpoints for debugging and profiling
      - --log.level=DEBUG # debug while we get it working, for more levels/info see https://docs.traefik.io/observability/logs/

      # Definizione degli entrypoints
      - --entryPoints.web.address=:80
      - --entryPoints.web.http.redirections.entryPoint.to=websecure
      - --entryPoints.web.http.redirections.entryPoint.scheme=https
      - --entryPoints.websecure.address=:443

      # # Definizione del risolutore di certificati
      # # Di staging
      - --certificatesResolvers.staging.acme.email=giuseppe9909@gmail.com
      - --certificatesResolvers.staging.acme.storage=/certificates/acme.json
      - --certificatesResolvers.staging.acme.caServer=https://acme-staging-v02.api.letsencrypt.org/directory
      - --certificatesresolvers.staging.acme.tlschallenge=true
      - --certificatesResolvers.staging.acme.httpChallenge.entryPoint=web
      # # Di produzione
      - --certificatesResolvers.production.acme.email=giuseppe9909@gmail.com
      - --certificatesResolvers.production.acme.storage=/certificates/acme.json
      - --certificatesResolvers.production.acme.caServer=https://acme-v02.api.letsencrypt.org/directory
      - --certificatesresolvers.production.acme.tlschallenge=true
      - --certificatesResolvers.production.acme.httpChallenge.entryPoint=websecure

      # - --certificatesresolvers.le.acme.email=giuseppe9909@gmail.com
      # - --certificatesresolvers.le.acme.storage=/certificates/acme.json
      # - --certificatesresolvers.le.acme.tlschallenge=true

      # Definizione dei providers
      - --providers.docker=true
      - --providers.docker.swarmmode=true
      - --providers.docker.exposedByDefault=false
      - --providers.docker.network=traefik-public
      # - --providers.docker.constraints=Label(`traefik.constraint-label`, `traefik-public`)
    deploy:
      mode: replicated
      replicas: 1
      placement:
        constraints: [node.role == manager]

# Volume per il salvataggio dei certificati. Si trova solo sul nodo master
volumes:
  traefik-public-certificates:

networks:
  traefik-public:
    external: true

Whoami configuration:

version: '3'

services:
  whoami:
    image: traefik/whoami
    networks:
      - traefik-public
    deploy:
      mode: replicated
      replicas: 1
      placement:
        constraints: [node.role == manager]
      labels:
        - "traefik.enable=true"
        - "traefik.docker.network=traefik-public"

        - "traefik.http.routers.whoami.entrypoints=web"
        - "traefik.http.routers.whoami.rule=Host(`beppetemp.home.it`)"

        - traefik.http.routers.whoami-https.tls=true
        - traefik.http.routers.whoami-https.entrypoints=websecure
        - traefik.http.routers.whoami-https.tls.certresolver=production
        - traefik.http.routers.whoami-https.rule=Host(`beppetemp.home.it`)

        - "traefik.http.services.whoami.loadbalancer.server.port=80"

networks:
  traefik-public:
    external: true

The error that comes out in the log of the container of traefik is in the following:

time="2022-01-04T20:00:04Z" level=error msg="Unable to obtain ACME certificate for domains "beppetemp.home.it": unable to generate a certificate for the domains [beppetemp.home.it]: error: one or more domains had a problem:\n[beppetemp.home.it] acme: error: 400 :: urn:ietf:params:acme:error:dns :: DNS problem: NXDOMAIN looking up A for beppetemp.home.it - check that a DNS record exists for this domain\n" routerName=whoami-https@docker rule="Host(beppetemp.home.it)" providerName=production.acme

does anyone know how to help me?
thanks a lot