NobMail

diff --git a/generate_config.sh b/generate_config.sh
index daefbd7e..33a7b1e1 100755
--- a/generate_config.sh
+++ b/generate_config.sh
@@ -216,6 +216,8 @@ COMPOSE_PROJECT_NAME=mailcowdockerized
 # Used Docker Compose version
 # Switch here between native (compose plugin) and standalone
 # For more informations take a look at the mailcow docs regarding the configuration options.
+# Normally this should be untouched but if you decided to use either of those you can switch it manually here.
+# Please be aware that at least one of those variants should be installed on your maschine or mailcow will fail.
 
 DOCKER_COMPOSE_VERSION=${COMPOSE_VERSION}
 
diff --git a/helper-scripts/update_compose.sh b/helper-scripts/update_compose.sh
new file mode 100755
index 00000000..c58eabea
--- /dev/null
+++ b/helper-scripts/update_compose.sh
@@ -0,0 +1,70 @@
+#!/bin/bash
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+source ${SCRIPT_DIR}/../mailcow.conf
+
+if [ "${DOCKER_COMPOSE_VERSION}" == "standalone" ]; then
+LATEST_COMPOSE=$(curl -#L https://www.servercow.de/docker-compose/latest.php)
+COMPOSE_VERSION=$(docker-compose version --short)
+if [[ "$LATEST_COMPOSE" != "$COMPOSE_VERSION" ]]; then
+  echo -e "\e[33mA new docker-compose Version is available: $LATEST_COMPOSE\e[0m"
+  echo -e "\e[33mYour Version is: $COMPOSE_VERSION\e[0m"
+else
+  echo -e "\e[32mYour docker-compose Version is up to date! Not updating it...\e[0m"
+  exit 0 
+fi
+read -r -p "Do you want to update your docker-compose Version? It will automatic upgrade your docker-compose installation (recommended)? [y/N] " updatecomposeresponse 
+    if [[ ! "${updatecomposeresponse}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
+      echo "OK, not updating docker-compose."
+      exit 0
+    fi 
+echo -e "\e[32mFetching new docker-compose (standalone) version...\e[0m"
+echo -e "\e[32mTrying to determine GLIBC version...\e[0m"
+    if ldd --version > /dev/null; then
+        GLIBC_V=$(ldd --version | grep -E '(GLIBC|GNU libc)' | rev | cut -d ' ' -f1 | rev | cut -d '.' -f2)
+        if [ ! -z "${GLIBC_V}" ] && [ ${GLIBC_V} -gt 27 ]; then
+        DC_DL_SUFFIX=
+        else
+        DC_DL_SUFFIX=legacy
+        fi
+    else
+        DC_DL_SUFFIX=legacy
+    fi
+    sleep 1
+    if [[ $(command -v pip 2>&1) && $(pip list --local 2>&1 | grep -v DEPRECATION | grep -c docker-compose) == 1 || $(command -v pip3 2>&1) && $(pip3 list --local 2>&1 | grep -v DEPRECATION | grep -c docker-compose) == 1 ]]; then
+        echo -e "\e[33mFound a docker-compose Version installed with pip!\e[0m"
+        echo -e "\e[31mPlease uninstall the pip Version of docker-compose since it doesn´t support Versions higher than 1.29.2.\e[0m"
+        sleep 2
+        echo -e "\e[33mExiting...\e[0m"
+        exit 1
+        #prevent breaking a working docker-compose installed with pip
+    elif [[ $(curl -sL -w "%{http_code}" https://www.servercow.de/docker-compose/latest.php?vers=${DC_DL_SUFFIX} -o /dev/null) == "200" ]]; then
+        LATEST_COMPOSE=$(curl -#L https://www.servercow.de/docker-compose/latest.php)
+        COMPOSE_VERSION=$(docker-compose version --short)
+        if [[ "$LATEST_COMPOSE" != "$COMPOSE_VERSION" ]]; then
+        COMPOSE_PATH=$(command -v docker-compose)
+        if [[ -w ${COMPOSE_PATH} ]]; then
+            curl -#L https://github.com/docker/compose/releases/download/v${LATEST_COMPOSE}/docker-compose-$(uname -s)-$(uname -m) > $COMPOSE_PATH
+            chmod +x $COMPOSE_PATH
+            echo -e "\e[32mYour Docker Compose (standalone) has been updated to: $LATEST_COMPOSE\e[0m"
+            exit 0
+        else
+            echo -e "\e[33mWARNING: $COMPOSE_PATH is not writable, but new version $LATEST_COMPOSE is available (installed: $COMPOSE_VERSION)\e[0m"
+            return 1
+        fi
+        fi
+    else
+        echo -e "\e[33mCannot determine latest docker-compose version, skipping...\e[0m"
+        exit 1
+    fi
+
+elif [ "${DOCKER_COMPOSE_VERSION}" == "native" ]; then
+    echo -e "\e[31mYou are using the native Docker Compose Plugin. This Script is for the standalone Docker Compose Version only.\e[0m"
+    sleep 2
+    echo -e "\e[33mNotice: You´ll have to update this Compose Version via your Package Manager manually!\e[0m"
+    exit 1
+
+else
+    echo -e "\e[31mCan not read DOCKER_COMPOSE_VERSION variable from mailcow.conf! Is your mailcow up to date? Exiting...\e[0m"
+    exit 1
+fi
\ No newline at end of file
diff --git a/update.sh b/update.sh
index 4f4cb354..43ebcf07 100755
--- a/update.sh
+++ b/update.sh
@@ -419,6 +419,8 @@ for option in ${CONFIG_ARRAY[@]}; do
       echo "# Used Docker Compose version" >> mailcow.conf
       echo "# Switch here between native (compose plugin) and standalone" >> mailcow.conf
       echo "# For more informations take a look at the mailcow docs regarding the configuration options." >> mailcow.conf
+      echo "# Normally this should be untouched but if you decided to use either of those you can switch it manually here." >> mailcow.conf
+      echo "# Please be aware that at least one of those variants should be installed on your maschine or mailcow will fail." >> mailcow.conf
       echo "" >> mailcow.conf
       echo "DOCKER_COMPOSE_VERSION=${DOCKER_COMPOSE_VERSION}" >> mailcow.conf
     fi