apiVersion: v1
kind: Service
metadata:
  name: postfix
  labels:
    app: postfix
spec:
  selector:
    app: postfix
    tier: smtp
  type: LoadBalancer
  ports:
  - port: 30025
    targetPort: 25
    name: postfix-smtp
  - port: 30143
    targetPort: 143
    name: postfix-auth-smtp-tls
  - port: 30587
    targetPort: 587
    name: postfix-msa