diff --git a/docs/kubernetes/mailu/admin.yaml b/docs/kubernetes/mailu/admin.yaml
deleted file mode 100644
index 08c06e44..00000000
--- a/docs/kubernetes/mailu/admin.yaml
+++ /dev/null
@@ -1,63 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: mailu-admin
-  namespace: mailu-mailserver
-spec:
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        app: mailu-admin
-        role: mail
-        tier: backend
-    spec:
-      containers:
-      - name: admin
-        image: mailu/admin:master
-        imagePullPolicy: Always
-        envFrom:
-          - configMapRef:
-              name: mailu-config
-        volumeMounts:
-          - name: maildata
-            mountPath: /data
-            subPath: maildata
-          - name: maildata
-            mountPath: /dkim
-            subPath: dkim
-        ports:
-          - name: http
-            containerPort: 80
-            protocol: TCP
-        resources:
-          requests:
-            memory: 500Mi
-            cpu: 500m
-          limits:
-            memory: 500Mi
-            cpu: 500m
-      volumes:
-        - name: maildata
-          persistentVolumeClaim:
-            claimName: mail-storage
----
-
-apiVersion: v1
-kind: Service
-metadata:
-  name: admin
-  namespace: mailu-mailserver
-  labels:
-    app: mailu-admin
-    role: mail
-    tier: backend
-spec:
-  selector:
-    app: mailu-admin
-    role: mail
-    tier: backend
-  ports:
-  - name: http
-    port: 80
-    protocol: TCP
diff --git a/docs/kubernetes/mailu/configmap.yaml b/docs/kubernetes/mailu/configmap.yaml
deleted file mode 100644
index 6a674c53..00000000
--- a/docs/kubernetes/mailu/configmap.yaml
+++ /dev/null
@@ -1,175 +0,0 @@
-   apiVersion: v1
-   kind: ConfigMap
-   metadata:
-     name: mailu-config
-     namespace: mailu-mailserver
-   data:
-    # Mailu main configuration file
-    #
-    # Most configuration variables can be modified through the Web interface,
-    # these few settings must however be configured before starting the mail
-    # server and require a restart upon change.
-
-    ###################################
-    # Common configuration variables
-    ###################################
-
-    # Set this to the path where Mailu data and configuration is stored
-    ROOT: "/mailu"
-
-    # Mailu version to run (1.0, 1.1, etc. or master)
-    VERSION: "master"
-
-    # Set to a randomly generated 16 bytes string
-    SECRET_KEY: "MySup3rS3cr3tPas"
-
-    # Address where listening ports should bind
-    BIND_ADDRESS4: "127.0.0.1"
-    #BIND_ADDRESS6: "::1"
-
-    # Main mail domain
-    DOMAIN: "example.com"
-
-    # Hostnames for this server, separated with comas
-    HOSTNAMES: "mail.example.com"
-
-    # Postmaster local part (will append the main mail domain)
-    POSTMASTER: "admin"
-
-    # Choose how secure connections will behave (value: letsencrypt, cert, notls, mail, mail-letsencrypt)
-    TLS_FLAVOR: "cert"
-
-    # Authentication rate limit (per source IP address)
-    AUTH_RATELIMIT: "10/minute;1000/hour"
-
-    # Opt-out of statistics, replace with "True" to opt out
-    DISABLE_STATISTICS: "False"
-
-    ###################################
-    # Kubernetes configuration
-    ###################################
-
-    # Use Kubernetes Ingress Controller to handle all actions on port 80 and 443
-    # This way we can make use of the advantages of the cert-manager deployment
-    KUBERNETES_INGRESS: "true"
-
-    # POD_ADDRESS_RANGE is normally provided by default with Kubernetes
-    # Only use this value when you are using Flannel, Calico or a special kind of CNI
-    # Provide the IPs of your network interface or bridge which is used for VXLAN network traffic
-    # POD_ADDRESS_RANGE: 10.2.0.0/16,10.1.6.0/24
-
-    ###################################
-    # Optional features
-    ###################################
-
-    # Expose the admin interface (value: true, false)
-    ADMIN: "true"
-    # Run the admin interface in debug mode
-    #DEBUG: "True"
-
-    # Choose which webmail to run if any (values: roundcube, rainloop, none)
-    WEBMAIL: "roundcube"
-
-    # Dav server implementation (value: radicale, none)
-    WEBDAV: "radicale"
-
-    # Antivirus solution (value: clamav, none)
-    ANTIVIRUS: "clamav"
-
-    ###################################
-    # Mail settings
-    ###################################
-
-    # Message size limit in bytes
-    # Default: accept messages up to 50MB
-    MESSAGE_SIZE_LIMIT: "50000000"
-
-    # Will relay all outgoing mails if configured
-    #RELAYHOST=
-
-    # This part is needed for the XCLIENT login for postfix. This should be the POD ADDRESS range
-    FRONT_ADDRESS: "front.mailu-mailserver.svc.cluster.local"
-
-    # This value  is needed by the webmail to find the correct imap backend
-    IMAP_ADDRESS: "imap.mailu-mailserver.svc.cluster.local"
-
-    # This value is used by Dovecot to find the Redis server in the cluster
-    REDIS_ADDRESS: "redis.mailu-mailserver.svc.cluster.local"
-
-    # Fetchmail delay
-    FETCHMAIL_DELAY: "600"
-
-    # Recipient delimiter, character used to delimiter localpart from custom address part
-    # e.g. localpart+custom@domain;tld
-    RECIPIENT_DELIMITER: "+"
-
-    # DMARC rua and ruf email
-    DMARC_RUA: "root"
-    DMARC_RUF: "root"
-
-    # Welcome email, enable and set a topic and body if you wish to send welcome
-    # emails to all users.
-    WELCOME: "false"
-    WELCOME_SUBJECT: "Welcome to your new email account"
-    WELCOME_BODY: "Welcome to your new email account, if you can read this, then it is configured properly!"
-
-    ###################################
-    # Web settings
-    ###################################
-
-    # Path to the admin interface if enabled
-    # Kubernetes addition: You need to change ALL the ingresses, when you want this URL to be different!!!
-    WEB_ADMIN: "/admin"
-
-    # Path to the webmail if enabled
-    # Currently, this is not used, because we intended to use a different subdomain: webmail.example.com
-    # This option can be added in a feature release
-    WEB_WEBMAIL: "/webmail"
-
-    # Website name
-    SITENAME: "Mailu"
-
-    # Linked Website URL
-    WEBSITE: "https://example.com"
-
-    # Registration reCaptcha settings (warning, this has some privacy impact)
-    # RECAPTCHA_PUBLIC_KEY=
-    # RECAPTCHA_PRIVATE_KEY=
-
-    # Domain registration, uncomment to enable
-    # DOMAIN_REGISTRATION=true
-
-    ###################################
-    # Advanced settings
-    ###################################
-
-    # Create an admin account if it does not exist yet. It will also create the email domain for the account.
-    # INITIAL_ADMIN_ACCOUNT: "admin"
-    # INITIAL_ADMIN_DOMAIN: "example.com"
-    # INITIAL_ADMIN_PW: "s3cr3t"
-
-    # Docker-compose project name, this will prepended to containers names.
-    COMPOSE_PROJECT_NAME: "mailu"
-
-    # Default password scheme used for newly created accounts and changed passwords
-    # (value: SHA512-CRYPT, SHA256-CRYPT, MD5-CRYPT, CRYPT)
-    PASSWORD_SCHEME: "SHA512-CRYPT"
-
-    # Header to take the real ip from
-    #REAL_IP_HEADER:
-
-    # IPs for nginx set_real_ip_from (CIDR list separated by commas)
-    #REAL_IP_FROM:
-
-    # Host settings
-    HOST_IMAP: "imap.mailu-mailserver.svc.cluster.local"
-    HOST_POP3: "imap.mailu-mailserver.svc.cluster.local"
-    HOST_SMTP: "smtp.mailu-mailserver.svc.cluster.local"
-    HOST_AUTHSMTP: "smtp.mailu-mailserver.svc.cluster.local"
-    HOST_WEBMAIL: "webmail.mailu-mailserver.svc.cluster.local"
-    HOST_ADMIN: "admin.mailu-mailserver.svc.cluster.local"
-    HOST_WEBDAV: "webdav.mailu-mailserver.svc.cluster.local:5232"
-    HOST_ANTISPAM_MILTER: "antispam.mailu-mailserver.svc.cluster.local:11332"
-    HOST_ANTISPAM_WEBUI: "antispam.mailu-mailserver.svc.cluster.local:11334"
-    HOST_ANTIVIRUS: "antivirus.mailu-mailserver.svc.cluster.local:3310"
-    HOST_REDIS: "redis.mailu-mailserver.svc.cluster.local"
diff --git a/docs/kubernetes/mailu/fetchmail.yaml b/docs/kubernetes/mailu/fetchmail.yaml
deleted file mode 100644
index d454f95b..00000000
--- a/docs/kubernetes/mailu/fetchmail.yaml
+++ /dev/null
@@ -1,39 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: mailu-fetchmail
-  namespace: mailu-mailserver
-spec:
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        app: mailu-fetchmail
-        role: mail
-        tier: backend
-    spec:
-      containers:
-      - name: fetchmail
-        image: mailu/fetchmail:master
-        imagePullPolicy: Always
-        envFrom:
-          - configMapRef:
-              name: mailu-config
-        volumeMounts:
-          - name: maildata
-            mountPath: /data
-            subPath: maildata
-        ports:
-          - containerPort: 5232
-          - containerPort: 80
-        resources:
-          requests:
-            memory: 100Mi
-            cpu: 100m
-          limits:
-            memory: 100Mi
-            cpu: 100m
-      volumes:
-        - name: maildata
-          persistentVolumeClaim:
-            claimName: mail-storage
diff --git a/docs/kubernetes/mailu/front.yaml b/docs/kubernetes/mailu/front.yaml
deleted file mode 100644
index 2fba1026..00000000
--- a/docs/kubernetes/mailu/front.yaml
+++ /dev/null
@@ -1,148 +0,0 @@
-apiVersion: apps/v1
-kind: DaemonSet
-metadata:
-  name: mailu-front
-  namespace: mailu-mailserver
-  labels:
-    k8s-app: mail-loadbalancer
-    component: ingress-controller
-    type: nginx
-spec:
-  selector:
-    matchLabels:
-      k8s-app: mail-loadbalancer
-      component: ingress-controller
-      type: nginx
-  template:
-    metadata:
-      labels:
-        k8s-app: mail-loadbalancer
-        component: ingress-controller
-        type: nginx
-    spec:
-      affinity:
-        nodeAffinity:
-          requiredDuringSchedulingIgnoredDuringExecution:
-            nodeSelectorTerms:
-            - matchExpressions:
-              - key: node-role.kubernetes.io/node
-                operator: Exists
-      nodeSelector:
-        node-role.kubernetes.io/node: ""
-      dnsPolicy: ClusterFirstWithHostNet
-      restartPolicy: Always
-      terminationGracePeriodSeconds: 60
-      containers:
-      - name: front
-        image: mailu/nginx:master
-        imagePullPolicy: Always
-        envFrom:
-          - configMapRef:
-              name: mailu-config
-        volumeMounts:
-          - name: certs
-            mountPath: /certs
-        ports:
-          - name: pop3
-            containerPort: 110
-            hostPort: 110
-            protocol: TCP
-          - name: pop3s
-            containerPort: 995
-            hostPort: 995
-            protocol: TCP
-          - name: imap
-            containerPort: 143
-            hostPort: 143
-            protocol: TCP
-          - name: imaps
-            containerPort: 993
-            hostPort: 993
-            protocol: TCP
-          - name: smtp
-            containerPort: 25
-            hostPort: 25
-            protocol: TCP
-          - name: smtps
-            containerPort: 465
-            hostPort: 465
-            protocol: TCP
-          - name: smtpd
-            containerPort: 587
-            hostPort: 587
-            protocol: TCP
-          # internal services (not exposed externally)
-          - name: smtp-auth
-            containerPort: 10025
-            protocol: TCP
-          - name: imap-auth
-            containerPort: 10143
-            protocol: TCP
-          - name: auth
-            containerPort: 8000
-            protocol: TCP
-          - name: http
-            containerPort: 80
-            protocol: TCP
-        resources:
-          requests:
-            memory: 100Mi
-            cpu: 100m
-          limits:
-            memory: 200Mi
-            cpu: 200m
-      volumes:
-        - name: certs
-          secret:
-            items:
-              - key: tls.crt
-                path: cert.pem
-              - key: tls.key
-                path: key.pem
-            secretName: letsencrypt-certs-all
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: front
-  namespace: mailu-mailserver
-  labels:
-    k8s-app: mail-loadbalancer
-    component: ingress-controller
-    type: nginx
-spec:
-  selector:
-    k8s-app: mail-loadbalancer
-    component: ingress-controller
-    type: nginx
-  ports:
-  - name: pop3
-    port: 110
-    protocol: TCP
-  - name: pop3s
-    port: 995
-    protocol: TCP
-  - name: imap
-    port: 143
-    protocol: TCP
-  - name: imaps
-    port: 993
-    protocol: TCP
-  - name: smtp
-    port: 25
-    protocol: TCP
-  - name: smtps
-    port: 465
-    protocol: TCP
-  - name: smtpd
-    port: 587
-    protocol: TCP
-  - name: smtp-auth
-    port: 10025
-    protocol: TCP
-  - name: imap-auth
-    port: 10143
-    protocol: TCP
-  - name: http
-    port: 80
-    protocol: TCP
diff --git a/docs/kubernetes/mailu/imap.yaml b/docs/kubernetes/mailu/imap.yaml
deleted file mode 100644
index 64e69930..00000000
--- a/docs/kubernetes/mailu/imap.yaml
+++ /dev/null
@@ -1,84 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: mailu-imap
-  namespace: mailu-mailserver
-spec:
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        app: mailu-imap
-        role: mail
-        tier: backend
-    spec:
-      containers:
-      - name: imap
-        image: mailu/dovecot:master
-        imagePullPolicy: Always
-        envFrom:
-          - configMapRef:
-              name: mailu-config
-        volumeMounts:
-          - mountPath: /data
-            name: maildata
-            subPath: maildata
-          - mountPath: /mail
-            name: maildata
-            subPath: mailstate
-          - mountPath: /overrides
-            name: maildata
-            subPath: overrides
-        ports:
-          - name: imap-auth
-            containerPort: 2102
-          - name: imap-transport
-            containerPort: 2525
-          - name: pop3
-            containerPort: 110
-          - name: imap-default
-            containerPort: 143
-          - name: sieve
-            containerPort: 4190
-        resources:
-          requests:
-            memory: 1Gi
-            cpu: 1000m
-          limits:
-            memory: 1Gi
-            cpu: 1000m
-      volumes:
-        - name: maildata
-          persistentVolumeClaim:
-            claimName: mail-storage
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: imap
-  namespace: mailu-mailserver
-  labels:
-    app: mailu
-    role: mail
-    tier: backend
-spec:
-  selector:
-    app: mailu-imap
-    role: mail
-    tier: backend
-  ports:
-  - name: imap-auth
-    port: 2102
-    protocol: TCP
-  - name: imap-transport
-    port: 2525
-    protocol: TCP
-  - name: pop3
-    port: 110
-    protocol: TCP
-  - name: imap-default
-    port: 143
-    protocol: TCP
-  - name: sieve
-    port: 4190
-    protocol: TCP
diff --git a/docs/kubernetes/mailu/index.rst b/docs/kubernetes/mailu/index.rst
index 0af3942e..db4b98cd 100644
--- a/docs/kubernetes/mailu/index.rst
+++ b/docs/kubernetes/mailu/index.rst
@@ -3,222 +3,9 @@
 Kubernetes setup
 ================
 
-> Hold up!
-> These instructions are not recommended for setting up Mailu in a production Kubernetes environment.
-> Please see [the Helm Chart documentation](https://github.com/Mailu/helm-charts/blob/master/mailu/README.md).
+Hold up! These instructions are not recommended for setting up Mailu in a production Kubernetes environment. Please see `the Helm Chart documentation`_.
 
-Prequisites
------------
+We are looking for maintainers: if you are interested please join our `Matrix`_ room.
 
-Structure
-~~~~~~~~~
-
-There’s chosen to have a double NGINX stack for Mailu, this way the main
-ingress can still be used to access other websites/domains on your
-cluster. This is the current structure:
-
--  ``NGINX Ingress controller``: Listens to the nodes ports 80 & 443. We have chosen to have a double NGINX stack for Mailu.
--  ``Cert manager``: Creates automatic Lets Encrypt certificates based on an ``Ingress``-objects domain name.
--  ``Mailu NGINX Front daemonset``: This daemonset runs in parallel with the Nginx Ingress Controller and only listens on all E-mail specific ports (25, 110, 143, 587,...). It also listens on 80 and delegates the various http endpoints to the correct services.
--  ``Mailu components``: All Mailu components (imap, smtp, security, webmail,...) are split into separate files to make them more handy to use, you can find the ``YAML`` files in this directory
-
-What you need
-~~~~~~~~~~~~~
-
--  A working Kubernetes cluster (tested with 1.10.5)
--  A working `cert-manager`_ installation
--  A working nginx-ingress controller needed for the lets-encrypt
-   certificates. You can find those files in the ``nginx`` subfolder.
-   Other ingress controllers that support cert-manager (e.g. traefik)
-   should also work.
-
-Cert manager
-^^^^^^^^^^^^
-
-The ``Cert-manager`` is quite easy to deploy using Helm when reading the
-`docs`_. After booting the ``Cert-manager`` you’ll need a
-``ClusterIssuer`` which takes care of all required certificates through
-``Ingress`` items. We chose to provide a ``clusterIssuer`` so you can provide SSL certificates
-for other namespaces (different websites/services), if you don't need this option, you can easily change this by
-changing ``clusterIssuer`` to ``Issuer`` and adding the ``namespace: mailu-mailserver`` to the metadata.
-An example of a production and a staging ``clusterIssuer``:
-
-.. code:: yaml
-
-   # This clusterIssuer example uses the staging environment for testing first
-   apiVersion: certmanager.k8s.io/v1alpha1
-   kind: ClusterIssuer
-   metadata:
-     name: letsencrypt-stage
-   spec:
-     acme:
-       email: something@example.com
-       http01: {}
-       privateKeySecretRef:
-         name: letsencrypt-stage
-       server: https://acme-staging-v02.api.letsencrypt.org/directory
-
-.. code:: yaml
-
-   # This clusterIssuer example uses the production environment
-   apiVersion: certmanager.k8s.io/v1alpha1
-   kind: ClusterIssuer
-   metadata:
-     name: letsencrypt-prod
-   spec:
-     acme:
-       email: something@example.com
-       http01: {}
-       privateKeySecretRef:
-         name: letsencrypt-prod
-       server: https://acme-v02.api.letsencrypt.org/directory
-
-**IMPORTANT**: ``ingress.yaml`` uses the ``letsencrypt-stage`` ``clusterIssuer``. If you are ready for production,
-change this field in ``ingress.yaml`` file to ``letsencrypt-prod`` or whatever name you chose for the production.
-If you choose for ``Issuer`` instead of ``clusterIssuer`` you also need to change the annotation to ``certmanager.k8s.io/issuer`` instead of ``certmanager.k8s.io/cluster-issuer``
-
-Deploying Mailu
----------------
-
-All manifests can be found in the ``mailu`` subdirectory. All commands
-below need to be run from this subdirectory
-
-Personalization
-~~~~~~~~~~~~~~~
-
--  All services run in the same namespace, currently ``mailu-mailserver``. So if you want to use a different one, change the ``namespace`` value in **every** file
--  Check the ``storage-class`` field in the ``pvc.yaml`` file, you can also change the sizes to your liking. Note that you need ``RWX`` (read-write-many) and ``RWO`` (read-write-once) storageclasses.
--  Check the ``configmap.yaml`` and adapt it to your needs. Be sure to check the kubernetes DNS values at the end (if you use a different namespace)
--  Check the ``ingress.yaml`` file and change it to the domain you want (this is for the kubernetes ingress controller to handle the admin, webmail, webdav and auth connections)
-
-Installation
-------------
-
-Boot the Mailu components
-~~~~~~~~~~~~~~~~~~~~~~~~~
-
-To start Mailu, run the following commands from the ``docs/kubernetes/mailu`` directory
-
-.. code-block:: bash
-
-    kubectl create -f rbac.yaml
-    kubectl create -f configmap.yaml
-    kubectl create -f pvc.yaml
-    kubectl create -f redis.yaml
-    kubectl create -f front.yaml
-    kubectl create -f webmail.yaml
-    kubectl create -f imap.yaml
-    kubectl create -f security.yaml
-    kubectl create -f smtp.yaml
-    kubectl create -f fetchmail.yaml
-    kubectl create -f admin.yaml
-    kubectl create -f webdav.yaml
-    kubectl create -f ingress.yaml
-
-
-Create the first admin account
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-When the cluster is online you need to create you master user to access https://mail.example.com/admin
-
-You can create it now manually, or have the system create it automatically.
-
-If you want the system to create the admin user account automatically, see :ref:`admin_account`
-about the environment variables needed (``INITIAL_ADMIN_*``).
-Also, important, taking into consideration that a pod in Kubernetes can be stopped/rescheduled at
-any time, you should set ``INITIAL_ADMIN_MODE`` to either ``update`` or ``ifmissing`` - depending on what you 
-want to happen to its password.
-
-
-To create the admin user account manually, enter the main ``admin`` pod:
-
-.. code-block:: bash
-
-    kubectl -n mailu-mailserver get po
-    kubectl -n mailu-mailserver exec -it mailu-admin-.... /bin/sh
-
-And in the pod run the following command. The command uses following entries:
-
-.. code-block:: bash
-
-    flask mailu admin root example.com password
-
-- ``admin`` Make it an admin user
-- ``root`` The first part of the e-mail address (ROOT@example.com)
-- ``example.com`` the domain appendix
-- ``password`` the chosen password for the user
-
-
-Now you should be able to login on the mail account: https://mail.example.com/admin
-
-
-Adaptations
------------
-
-Dovecot
-~~~~~~~
-
-- If you are using Dovecot on a shared file system (Glusterfs, NFS,...), you need to create a special override otherwise a lot of indexing errors will occur on your Dovecot pod.
-- I also higher the number of max connections per IP. Now it's limited to 10.
-
-Enter the dovecot pod:
-
-.. code:: bash
-
-    kubectl -n mailu-mailserver get po
-    kubectl -n mailu-mailserver exec -it mailu-imap-.... /bin/sh
-
-Create the file ``overrides/dovecot.conf``
-
-.. code:: bash
-
-    vi /overrides/dovecot.conf
-
-And enter following contents:
-
-.. code:: bash
-
-    mail_nfs_index = yes
-    mail_nfs_storage = yes
-    mail_fsync = always
-    mmap_disable = yes
-    mail_max_userip_connections=100
-
-Save and close the file and delete the imap pod to get it recreated.
-
-.. code:: bash
-
-    kubectl -n mailu-mailserver delete po/mailu-imap-....
-
-Wait for the pod to recreate and you're online!
-Happy mailing!
-
-.. _here: https://github.com/hacor/Mailu/blob/master/core/postfix/conf/main.cf#L35
-.. _cert-manager: https://github.com/jetstack/cert-manager
-.. _docs: https://cert-manager.io/docs/installation/kubernetes/#installing-with-helm
-
-Imap login fix
-~~~~~~~~~~~~~~
-
-If it seems you're not able to login using IMAP on your Mailu accounts, check the logs of the imap container to see whether it's a permissions problem on the database.
-This problem can be easily fixed by running following commands:
-
-.. code:: bash
-
-    kubectl -n mailu-mailserver exec -it mailu-imap-... /bin/sh
-    chmod 777 /data/main.db
-
-If the login problem still persists, or more specific, happens now and then and you see some Auth problems on your webmail or mail client, try following steps:
-
-- Add ``auth_debug=yes`` to the ``/overrides/dovecot.conf`` file and delete the pod in order to start a new one, which loads the configuration
-- Depending on your network configuration you could still see some ``allow_nets check failed`` results in the logs. This means that the IP is not allowed a login
-- If this is happening your network plugin has troubles with the Nginx Ingress Controller using the ``hostNetwork: true`` option. Known cases: Flannel and Calico.
-- You should uncomment ``POD_ADDRESS_RANGE`` in the ``configmap.yaml`` file and add the IP range of your pod network bridge (the range that sadly has failed the ``allowed_nets`` test)
-- Delete the Admin pod and wait for it to restart
-
-.. code:: bash
-
-    kubectl -n mailu-mailserver get po
-    kubectl -n mailu-mailserver delete po/mailu-admin...
-
-Happy mailing!
+.. _`the Helm Chart documentation`: https://github.com/Mailu/helm-charts/blob/master/mailu/README.md
+.. _`Matrix`: https://matrix.to/#/#mailu:tedomum.net
diff --git a/docs/kubernetes/mailu/ingress.yaml b/docs/kubernetes/mailu/ingress.yaml
deleted file mode 100644
index 5a941e97..00000000
--- a/docs/kubernetes/mailu/ingress.yaml
+++ /dev/null
@@ -1,25 +0,0 @@
-apiVersion: apps/v1
-kind: Ingress
-metadata:
-  name: mailu-ingress
-  namespace: mailu-mailserver
-  annotations:
-    kubernetes.io/tls-acme: "true"
-    certmanager.k8s.io/cluster-issuer: letsencrypt-stage
-  labels:
-    app: mailu
-    role: mail
-    tier: backend
-spec:
-  tls:
-  - hosts:
-    - "mail.example.com"
-    secretName: letsencrypt-certs-all # If unsure how to generate these, check out https://github.com/ployst/docker-letsencrypt
-  rules:
-  - host: "mail.example.com"
-    http:
-      paths:
-      - path: "/"
-        backend:
-          serviceName: front
-          servicePort: 80
diff --git a/docs/kubernetes/mailu/pvc.yaml b/docs/kubernetes/mailu/pvc.yaml
deleted file mode 100644
index 0ec2852f..00000000
--- a/docs/kubernetes/mailu/pvc.yaml
+++ /dev/null
@@ -1,27 +0,0 @@
-kind: PersistentVolumeClaim
-apiVersion: v1
-metadata:
-  name: redis-hdd
-  namespace: mailu-mailserver
-  annotations:
-    volume.beta.kubernetes.io/storage-class: "glusterblock-hdd"
-spec:
-  accessModes:
-    - ReadWriteOnce
-  resources:
-    requests:
-      storage: 1Gi
----
-kind: PersistentVolumeClaim
-apiVersion: v1
-metadata:
-  name: mail-storage
-  namespace: mailu-mailserver
-  annotations:
-    volume.beta.kubernetes.io/storage-class: "gluster-heketi-hdd"
-spec:
-  accessModes:
-    - ReadWriteMany
-  resources:
-    requests:
-      storage: 100Gi
diff --git a/docs/kubernetes/mailu/rbac.yaml b/docs/kubernetes/mailu/rbac.yaml
deleted file mode 100644
index 33255130..00000000
--- a/docs/kubernetes/mailu/rbac.yaml
+++ /dev/null
@@ -1,4 +0,0 @@
-apiVersion: v1
-kind: Namespace
-metadata:
-  name: mailu-mailserver
\ No newline at end of file
diff --git a/docs/kubernetes/mailu/redis.yaml b/docs/kubernetes/mailu/redis.yaml
deleted file mode 100644
index f453a3ff..00000000
--- a/docs/kubernetes/mailu/redis.yaml
+++ /dev/null
@@ -1,60 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: mailu-redis
-  namespace: mailu-mailserver
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: mailu-redis
-      role: mail
-      tier: backend
-  template:
-    metadata:
-      labels:
-        app: mailu-redis
-        role: mail
-        tier: backend
-    spec:
-      containers:
-        - name: redis
-          image: redis:5-alpine
-          imagePullPolicy: Always
-          volumeMounts:
-            - mountPath: /data
-              name: redisdata
-          ports:
-            - containerPort: 6379
-              name: redis
-              protocol: TCP
-          resources:
-            requests:
-              memory: 200Mi
-              cpu: 100m
-            limits:
-              memory: 300Mi
-              cpu: 200m
-      volumes:
-        - name: redisdata
-          persistentVolumeClaim:
-            claimName: redis-hdd
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: redis
-  namespace: mailu-mailserver
-  labels:
-    app: mailu-redis
-    role: mail
-    tier: backend
-spec:
-  selector:
-    app: mailu-redis
-    role: mail
-    tier: backend
-  ports:
-    - name: redis
-      port: 6379
-      protocol: TCP
diff --git a/docs/kubernetes/mailu/security.yaml b/docs/kubernetes/mailu/security.yaml
deleted file mode 100644
index 419c7ac4..00000000
--- a/docs/kubernetes/mailu/security.yaml
+++ /dev/null
@@ -1,115 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: mailu-security
-  namespace: mailu-mailserver
-spec:
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        app: mailu-security
-        role: mail
-        tier: backend
-    spec:
-      containers:
-      - name: antispam
-        image: mailu/rspamd:master
-        imagePullPolicy: Always
-        envFrom:
-          - configMapRef:
-              name: mailu-config
-        resources:
-          requests:
-            memory: 100Mi
-            cpu: 100m
-          limits:
-            memory: 200Mi
-            cpu: 200m
-        ports:
-          - name: antispam
-            containerPort: 11332
-            protocol: TCP
-          - name: antispam-http
-            containerPort: 11334
-            protocol: TCP
-        volumeMounts:
-          - name: filter
-            subPath: filter
-            mountPath: /var/lib/rspamd
-          - name: filter
-            mountPath: /dkim
-            subPath: dkim
-          - name: filter
-            mountPath: /etc/rspamd/override.d
-            subPath: rspamd-overrides
-      - name: antivirus
-        image: mailu/clamav:master
-        imagePullPolicy: Always
-        resources:
-          requests:
-            memory: 1Gi
-            cpu: 1000m
-          limits:
-            memory: 2Gi
-            cpu: 1000m
-        envFrom:
-          - configMapRef:
-              name: mailu-config
-        ports:
-          - name: antivirus
-            containerPort: 3310
-            protocol: TCP
-        volumeMounts:
-          - name: filter
-            subPath: filter
-            mountPath: /data
-      volumes:
-        - name: filter
-          persistentVolumeClaim:
-            claimName: mail-storage
-
----
-
-apiVersion: v1
-kind: Service
-metadata:
-  name: antispam
-  namespace: mailu-mailserver
-  labels:
-    app: mailu-antispam
-    role: mail
-    tier: backend
-spec:
-  selector:
-    app: mailu-security
-    role: mail
-    tier: backend
-  ports:
-  - name: antispam
-    port: 11332
-    protocol: TCP
-  - name: antispam-http
-    protocol: TCP
-    port: 11334
-
----
-
-apiVersion: v1
-kind: Service
-metadata:
-  name: antivirus
-  namespace: mailu-mailserver
-  labels:
-    app: mailu-antivirus
-    role: mail
-    tier: backend
-spec:
-  selector:
-    app: mailu-security
-    role: mail
-    tier: backend
-  ports:
-  - name: antivirus
-    port: 3310
-    protocol: TCP
diff --git a/docs/kubernetes/mailu/smtp.yaml b/docs/kubernetes/mailu/smtp.yaml
deleted file mode 100644
index 6002d508..00000000
--- a/docs/kubernetes/mailu/smtp.yaml
+++ /dev/null
@@ -1,80 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: mailu-smtp
-  namespace: mailu-mailserver
-spec:
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        app: mailu-smtp
-        role: mail
-        tier: backend
-    spec:
-      containers:
-      - name: smtp
-        image: mailu/postfix:master
-        imagePullPolicy: Always
-        envFrom:
-          - configMapRef:
-              name: mailu-config
-        resources:
-          requests:
-            memory: 2Gi
-            cpu: 500m
-          limits:
-            memory: 2Gi
-            cpu: 500m
-        volumeMounts:
-          - mountPath: /queue
-            name: maildata
-            subPath: mailqueue
-          - mountPath: /overrides
-            name: maildata
-            subPath: overrides
-        ports:
-          - name: smtp
-            containerPort: 25
-            protocol: TCP
-          - name: smtp-ssl
-            containerPort: 465
-            protocol: TCP
-          - name: smtp-starttls
-            containerPort: 587
-            protocol: TCP
-          - name: smtp-auth
-            containerPort: 10025
-            protocol: TCP
-      volumes:
-        - name: maildata
-          persistentVolumeClaim:
-            claimName: mail-storage
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: smtp
-  namespace: mailu-mailserver
-  labels:
-    app: mailu
-    role: mail
-    tier: backend
-spec:
-  selector:
-    app: mailu-smtp
-    role: mail
-    tier: backend
-  ports:
-  - name: smtp
-    port: 25
-    protocol: TCP
-  - name: smtp-ssl
-    port: 465
-    protocol: TCP
-  - name: smtp-starttls
-    port: 587
-    protocol: TCP
-  - name: smtp-auth
-    port: 10025
-    protocol: TCP
diff --git a/docs/kubernetes/mailu/webdav.yaml b/docs/kubernetes/mailu/webdav.yaml
deleted file mode 100644
index 57dde9a9..00000000
--- a/docs/kubernetes/mailu/webdav.yaml
+++ /dev/null
@@ -1,63 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: mailu-webdav
-  namespace: mailu-mailserver
-spec:
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        app: mailu-webdav
-        role: mail
-        tier: backend
-    spec:
-      containers:
-      - name: radicale
-        image: mailu/radicale:master
-        imagePullPolicy: Always
-        envFrom:
-          - configMapRef:
-              name: mailu-config
-        volumeMounts:
-          - mountPath: /data
-            name: maildata
-            subPath: dav
-        ports:
-          - containerPort: 5232
-          - containerPort: 80
-        resources:
-          requests:
-            memory: 100Mi
-            cpu: 100m
-          limits:
-            memory: 100Mi
-            cpu: 100m
-      volumes:
-        - name: maildata
-          persistentVolumeClaim:
-            claimName: mail-storage
----
-
-apiVersion: v1
-kind: Service
-metadata:
-  name: webdav
-  namespace: mailu-mailserver
-  labels:
-    app: mailu-webdav
-    role: mail
-    tier: backend
-spec:
-  selector:
-    app: mailu-webdav
-    role: mail
-    tier: backend
-  ports:
-  ports:
-  - name: http
-    port: 80
-    protocol: TCP
-  - name: http-ui
-    port: 5232
-    protocol: TCP
diff --git a/docs/kubernetes/mailu/webmail.yaml b/docs/kubernetes/mailu/webmail.yaml
deleted file mode 100644
index 679ea84a..00000000
--- a/docs/kubernetes/mailu/webmail.yaml
+++ /dev/null
@@ -1,57 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: mailu-roundcube
-  namespace: mailu-mailserver
-spec:
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        app: mailu-roundcube
-        role: mail
-        tier: frontend
-    spec:
-      containers:
-      - name: roundcube
-        image: mailu/roundcube:master
-        imagePullPolicy: Always
-        envFrom:
-          - configMapRef:
-              name: mailu-config
-        resources:
-          requests:
-            memory: 100Mi
-            cpu: 100m
-          limits:
-            memory: 200Mi
-            cpu: 200m
-        volumeMounts:
-          - mountPath: /data
-            name: maildata
-            subPath: webmail
-        ports:
-          - containerPort: 80
-      volumes:
-        - name: maildata
-          persistentVolumeClaim:
-            claimName: mail-storage
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: webmail
-  namespace: mailu-mailserver
-  labels:
-    app: mailu-roundcube
-    role: mail
-    tier: frontend
-spec:
-  selector:
-    app: mailu-roundcube
-    role: mail
-    tier: frontend
-  ports:
-  - name: http
-    port: 80
-    protocol: TCP
diff --git a/docs/kubernetes/nginx/default-http-backend.yaml b/docs/kubernetes/nginx/default-http-backend.yaml
deleted file mode 100644
index cf881c53..00000000
--- a/docs/kubernetes/nginx/default-http-backend.yaml
+++ /dev/null
@@ -1,55 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: default-http-backend
-  labels:
-    app: default-http-backend
-  namespace: kube-ingress
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: default-http-backend
-  template:
-    metadata:
-      labels:
-        app: default-http-backend
-    spec:
-      terminationGracePeriodSeconds: 60
-      containers:
-      - name: default-http-backend
-        # Any image is permissible as long as:
-        # 1. It serves a 404 page at /
-        # 2. It serves 200 on a /healthz endpoint
-        image: gcr.io/google_containers/defaultbackend:1.4
-        livenessProbe:
-          httpGet:
-            path: /healthz
-            port: 8080
-            scheme: HTTP
-          initialDelaySeconds: 30
-          timeoutSeconds: 5
-        ports:
-        - containerPort: 8080
-        resources:
-          limits:
-            cpu: 10m
-            memory: 20Mi
-          requests:
-            cpu: 10m
-            memory: 20Mi
----
-
-apiVersion: v1
-kind: Service
-metadata:
-  name: default-http-backend
-  namespace: kube-ingress
-  labels:
-    app: default-http-backend
-spec:
-  ports:
-  - port: 80
-    targetPort: 8080
-  selector:
-    app: default-http-backend
diff --git a/docs/kubernetes/nginx/nginx-ingress.yaml b/docs/kubernetes/nginx/nginx-ingress.yaml
deleted file mode 100644
index d8b71e21..00000000
--- a/docs/kubernetes/nginx/nginx-ingress.yaml
+++ /dev/null
@@ -1,127 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  # keep it under 24 chars
-  name: ingress-lb
-  namespace: kube-ingress
-  labels:
-    k8s-app: ingress-lb
-    component: ingress-controller
-spec:
-  type: ClusterIP
-  selector:
-    k8s-app: ingress-lb
-    component: ingress-controller
-  ports:
-    - name: http
-      protocol: TCP
-      port: 80
-      targetPort: 80
-    - name: https
-      protocol: TCP
-      port: 443
-      targetPort: 443
----
-kind: ConfigMap
-apiVersion: v1
-metadata:
-  name: udp-services
-  namespace: kube-ingress
-
----
-kind: ConfigMap
-apiVersion: v1
-metadata:
-  name: tcp-services
-  namespace: kube-ingress
-data:
-
----
-apiVersion: v1
-data:
-  enable-vts-status: "true"
-kind: ConfigMap
-metadata:
-  name: nginx-ingress-lb-conf
-  namespace: kube-ingress
----
-apiVersion: apps/v1beta2
-kind: DaemonSet
-metadata:
-  name: ingress-controller
-  namespace: kube-ingress
-  annotations:
-    prometheus.io/port: "10254"
-    prometheus.io/scrape: "true"
-  labels:
-    k8s-app: ingress-lb
-    component: ingress-controller
-    type: nginx
-spec:
-  updateStrategy:
-    rollingUpdate:
-      maxUnavailable: 1
-    type: RollingUpdate
-  selector:
-    matchLabels:
-      k8s-app: ingress-lb
-      component: ingress-controller
-      type: nginx
-  template:
-    metadata:
-      labels:
-        k8s-app: ingress-lb
-        component: ingress-controller
-        type: nginx
-    spec:
-      serviceAccount: kube-nginx-ingress
-      affinity:
-        nodeAffinity:
-          requiredDuringSchedulingIgnoredDuringExecution:
-            nodeSelectorTerms:
-            - matchExpressions:
-              - key: node-role.kubernetes.io/master
-                operator: DoesNotExist
-      containers:
-        - name: nginx-ingress-lb
-          image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.16.2
-          args:
-          - /nginx-ingress-controller
-          - --default-backend-service=$(POD_NAMESPACE)/default-http-backend
-          - --tcp-services-configmap=$(POD_NAMESPACE)/tcp-services
-          - --udp-services-configmap=$(POD_NAMESPACE)/udp-services
-          - --annotations-prefix=ingress.kubernetes.io
-          - --enable-ssl-passthrough
-          # use downward API
-          env:
-            - name: POD_NAME
-              valueFrom:
-                fieldRef:
-                  fieldPath: metadata.name
-            - name: POD_NAMESPACE
-              valueFrom:
-                fieldRef:
-                  fieldPath: metadata.namespace
-          ports:
-            - name: http
-              containerPort: 80
-            - name: https
-              containerPort: 443
-          readinessProbe:
-            httpGet:
-              path: /healthz
-              port: 10254
-              scheme: HTTP
-          livenessProbe:
-            initialDelaySeconds: 10
-            timeoutSeconds: 1
-            httpGet:
-              path: /healthz
-              port: 10254
-              scheme: HTTP
-      hostNetwork: true
-      nodeSelector:
-        node-role.kubernetes.io/node: ""
-      dnsPolicy: ClusterFirstWithHostNet
-      restartPolicy: Always
-      terminationGracePeriodSeconds: 60
diff --git a/docs/kubernetes/nginx/rbac.yaml b/docs/kubernetes/nginx/rbac.yaml
deleted file mode 100644
index d3c01384..00000000
--- a/docs/kubernetes/nginx/rbac.yaml
+++ /dev/null
@@ -1,129 +0,0 @@
-apiVersion: v1
-kind: Namespace
-metadata:
-  name: kube-ingress
----
-apiVersion: v1
-kind: ServiceAccount
-metadata:
-  name: kube-nginx-ingress
-  namespace: kube-ingress
----
-apiVersion: rbac.authorization.k8s.io/v1beta1
-kind: ClusterRole
-metadata:
-  name: kube-nginx-ingress
-rules:
-  - apiGroups:
-      - ""
-    resources:
-      - configmaps
-      - endpoints
-      - nodes
-      - pods
-      - secrets
-    verbs:
-      - list
-      - watch
-      - update
-  - apiGroups:
-      - ""
-    resources:
-      - nodes
-    verbs:
-      - get
-  - apiGroups:
-      - ""
-    resources:
-      - services
-    verbs:
-      - get
-      - list
-      - watch
-  - apiGroups:
-      - "extensions"
-    resources:
-      - ingresses
-    verbs:
-      - get
-      - list
-      - watch
-  - apiGroups:
-      - ""
-    resources:
-        - events
-    verbs:
-        - create
-        - patch
-  - apiGroups:
-      - "extensions"
-    resources:
-      - ingresses/status
-    verbs:
-      - update
----
-apiVersion: rbac.authorization.k8s.io/v1beta1
-kind: Role
-metadata:
-  name: kube-nginx-ingress
-  namespace: kube-ingress
-rules:
-  - apiGroups:
-      - ""
-    resources:
-      - configmaps
-      - pods
-      - secrets
-      - namespaces
-    verbs:
-      - get
-  - apiGroups:
-      - ""
-    resources:
-      - configmaps
-    resourceNames:
-      - "ingress-controller-leader-nginx"
-    verbs:
-      - get
-      - update
-  - apiGroups:
-      - ""
-    resources:
-      - configmaps
-    verbs:
-      - create
-  - apiGroups:
-      - ""
-    resources:
-      - endpoints
-    verbs:
-      - get
-      - create
-      - update
----
-apiVersion: rbac.authorization.k8s.io/v1beta1
-kind: RoleBinding
-metadata:
-  name: kube-nginx-ingress
-  namespace: kube-ingress
-roleRef:
-  apiGroup: rbac.authorization.k8s.io
-  kind: Role
-  name: kube-nginx-ingress
-subjects:
-  - kind: ServiceAccount
-    name: kube-nginx-ingress
-    namespace: kube-ingress
----
-apiVersion: rbac.authorization.k8s.io/v1beta1
-kind: ClusterRoleBinding
-metadata:
-  name: kube-nginx-ingress
-roleRef:
-  apiGroup: rbac.authorization.k8s.io
-  kind: ClusterRole
-  name: kube-nginx-ingress
-subjects:
-  - kind: ServiceAccount
-    name: kube-nginx-ingress
-    namespace: kube-ingress
\ No newline at end of file