initial commit

lp/dockermail/tls-secret.yaml

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+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: mail-certificate
+  namespace: mail  # Replace with your desired namespace (in this case, "mail")
+spec:
+  secretName: mail-certificate-secret  # The name of the Kubernetes secret to store the cert and key
+  issuerRef:
+    name: letsencrypt  # Reference to the ClusterIssuer you created earlier
+    kind: ClusterIssuer
+  commonName: mail.allarddcs.nl  # The common name for your mail domain
+  dnsNames:
+    - mail.allarddcs.nl  # Additional DNS names (e.g., subdomains)
+  usages:
+    - digital signature
+    - key encipherment
+    - server auth