apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: stalwart-tls
  namespace: stalwart
spec:
  secretName: stalwart-tls
  issuerRef:
    name: letsencrypt-production
    kind: ClusterIssuer
  dnsNames:
    - "mail.DOMAIN_SUFFIX"
    - "cal.DOMAIN_SUFFIX"