Add script 'restart-postfwd.sh'.

restart-postfwd.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+trim() {
+    local var="$*"
+    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
+    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
+    echo -n "$var"
+}
+
+PID="$(ps -A -o pid,cmd | grep /usr/sbin/postfwd | grep -v grep | head -n 1 | awk '{print $1}')" 
+
+if [[  -n "$(trim "$PID")" ]] ; then
+   kill $PID 
+   sleep 2 
+fi
+
+systemctl restart postfwd
+
+exit 0