rpi.carlosedp.cluster-monitoring/manifests/smtp-server-deployment.yaml

apiVersion: apps/v1beta2
kind: Deployment
metadata:
  labels:
    run: smtp-server
  name: smtp-server
  namespace: monitoring
spec:
  replicas: 1
  selector:
    matchLabels:
      run: smtp-server
  template:
    metadata:
      labels:
        run: smtp-server
    spec:
      containers:
      - env:
        - name: GMAIL_USER
          valueFrom:
            secretKeyRef:
              key: username
              name: smtp-account
        - name: GMAIL_PASSWORD
          valueFrom:
            secretKeyRef:
              key: password
              name: smtp-account
        - name: DISABLE_IPV6
          value: "True"
        - name: RELAY_DOMAINS
          value: :192.168.0.0/24:10.0.0.0/16
        image: carlosedp/docker-smtp:latest
        name: smtp-server
        ports:
        - containerPort: 25
          name: smtp