diff --git a/install_dehydrated.sh b/install_dehydrated.sh
index 32ef47e..6694251 100755
--- a/install_dehydrated.sh
+++ b/install_dehydrated.sh
@@ -131,6 +131,8 @@ while [[ "X$DH_BASE_DIR" = "X" ]]; do
 done
 HOOK_OUT_FILE="${DH_BASE_DIR}/hook.sh"
 DH_CRON_SCRIPT="${DH_BASE_DIR}/cron/dehydrated_cron.sh"
+DH_CHANGE_SSL_DIRECTIVES_SCRIPT="${DH_BASE_DIR}/tools/change_ssl_directives.sh"
+DH_UPDATE_SSL_DIRECTIVES_SCRIPT="${DH_BASE_DIR}/tools/update_ssl_directives.sh"
 
 
 echo ""
@@ -2751,7 +2753,10 @@ fi
 
 
 if [[ "$DH_CRON_TYPE" = "user" ]]; then
-   echononl "   Activate dehydrated cronjob for root user .."
+
+   # Cronjob for dehydrated main script (ordering certificates)
+   #
+   echononl "   Activate dehydrated cronjob for $(basename "$DH_CRON_SCRIPT") for root user .."
    _success=true
    _cur_cron=`mktemp`
    [[ $? -ne 0 ]] && _success=false
@@ -2762,7 +2767,7 @@ if [[ "$DH_CRON_TYPE" = "user" ]]; then
    else
       if grep `basename $DH_CRON_SCRIPT` $_cur_cron > /dev/null 2>&1 ; then
          echo_skipped
-         info "Cronjob already activated."
+         info "Cronjob for $(basename "$DH_CRON_SCRIPT") already activated."
       else
          _success=true
          cat <<EOF >> $_cur_cron
@@ -2798,10 +2803,86 @@ EOF
       else
          echo_failed
       fi
+   fi  # if grep `basename $DH_CRON_SCRIPT` /etc/cron.d/*
 
-   fi # if grep `basename $DH_CRON_SCRIPT` /etc/cron.d/*
+
+   # Cronjob for dehydrated update vhosts script (change ssl directives)
+   #
+   echononl "   Activate dehydrated cronjob for $(basename "$DH_UPDATE_SSL_DIRECTIVES_SCRIPT") for root user .."
+   _success=true
+   _cur_cron=`mktemp`
+   [[ $? -ne 0 ]] && _success=false
+   crontab -u root -l > $_cur_cron
+   [[ $? -ne 0 ]] && _success=false
+   if ! $success ; then
+      echo_failed
+   else
+      if grep `basename $DH_UPDATE_SSL_DIRECTIVES_SCRIPT` $_cur_cron > /dev/null 2>&1 ; then
+         echo_skipped
+         info "Cronjob for $(basename "$DH_UPDATE_SSL_DIRECTIVES_SCRIPT") already activated."
+      else
+         _success=true
+         cat <<EOF >> $_cur_cron
+
+# - Check whether all certificates are included in the VHOST configurations
+# -
+33 05 * * * $DH_UPDATE_SSL_DIRECTIVES_SCRIPT
+EOF
+         [[ $? -ne 0 ]] && _success=false
+         crontab -u root $_cur_cron
+         [[ $? -ne 0 ]] && _success=false
+         if $success ; then
+            echo_ok
+         else
+            echo_failed
+         fi
+      fi # if grep `basename $DH_UPDATE_SSL_DIRECTIVES_SCRIPT`
+   fi # if ! $success ; then
+   rm -f $_cur_cron
+
+
+   # - Check, whether a system based update vhosts script exists in /etc/cron.d
+   # -
+   if grep -l `basename $DH_UPDATE_SSL_DIRECTIVES_SCRIPT` /etc/cron.d/* > /dev/null 2>&1 ; then
+      warn "A system based update vhost cronjob already exists in /etc/cron.d/\n\t             Deleteing this one now.."
+      _success=true
+      echononl "   Delete update vhost  cronjob in /etc/cron.d/.."
+      for _file in $(grep -l `basename $DH_UPDATE_SSL_DIRECTIVES_SCRIPT` /etc/cron.d/*) ; do
+         rm -f $_file > /dev/null 2>&1
+         [[ $? -ne 0 ]] && _success=false
+      done
+      if $success ; then
+         echo_ok
+      else
+         echo_failed
+      fi
+
+   fi # if grep `basename $DH_CHANGE_SSL_DIRECTIVES_SCRIPT` /etc/cron.d/*
+
+   # - Remove crontjob's for old (and noe renamed) script $DH_CHANGE_SSL_DIRECTIVES_SCRIPT
+   # -
+   if crontab -l | grep `basename $DH_CHANGE_SSL_DIRECTIVES_SCRIPT` > /dev/null 2>&1 ; then
+      warn "Dehydrated's update vhost cronjob is also activated for root user.\n\t             Deleting now.."
+      echononl "  Delete dehydrated's update vhost cronjob for user root.."
+      _success=true
+      _cur_cron=`mktemp`
+      [[ $? -ne 0 ]] && _success=false
+      crontab -u root -l > $_cur_cron
+      [[ $? -ne 0 ]] && _success=false
+      sed -i "/`basename $DH_CHANGE_SSL_DIRECTIVES_SCRIPT`/d" $_cur_cron > /dev/null 2>&1
+      [[ $? -ne 0 ]] && _success=false
+      crontab -u root $_cur_cron
+      [[ $? -ne 0 ]] && _success=false
+      if $success ; then
+         echo_ok
+      else
+         echo_failed
+      fi
+
+   fi # if crontab -l | grep `basename $DH_CHANGE_SSL_DIRECTIVES_SCRIPT`
 
 elif [[ "$DH_CRON_TYPE" = "system" ]]; then
+
    echononl "   Activate dehydrated cronjob in /etc/cron.d/"
    if grep `basename $DH_CRON_SCRIPT` /etc/cron.d/* > /dev/null 2>&1 ; then
       echo_skipped
@@ -2812,6 +2893,10 @@ elif [[ "$DH_CRON_TYPE" = "system" ]]; then
 # - Generate/Renew Let's Encrypt Certificates if needed (using dehydrated script)
 # -
 21 05 * * * root $DH_CRON_SCRIPT
+
+# - Check whether all certificates are included in the VHOST configurations
+# -
+31 05 * * * root $DH_UPDATE_SSL_DIRECTIVES_SCRIPT
 EOF
       if [[ $? -eq 0 ]]; then
          echo_ok
@@ -2842,6 +2927,28 @@ EOF
 
    fi # if crontab -l | grep `basename $DH_CRON_SCRIPT`
 
+   # - Check, whether a dehydrated's update vhost cron job exists for user root
+   # -
+   if crontab -l | grep `basename $DH_UPDATE_SSL_DIRECTIVES_SCRIPT` > /dev/null 2>&1 ; then
+      warn "Dehydrated's update vhost cronjob is also activated for root user.\n\t             Deleting now.."
+      echononl "  Delete dehydrated's update vhost cronjob for user root.."
+      _success=true
+      _cur_cron=`mktemp`
+      [[ $? -ne 0 ]] && _success=false
+      crontab -u root -l > $_cur_cron
+      [[ $? -ne 0 ]] && _success=false
+      sed -i "/`basename $DH_UPDATE_SSL_DIRECTIVES_SCRIPT`/d" $_cur_cron > /dev/null 2>&1
+      [[ $? -ne 0 ]] && _success=false
+      crontab -u root $_cur_cron
+      [[ $? -ne 0 ]] && _success=false
+      if $success ; then
+         echo_ok
+      else
+         echo_failed
+      fi
+
+   fi # if crontab -l | grep `basename $DH_UPDATE_SSL_DIRECTIVES_SCRIPT`
+
 fi
 
 
@@ -3295,12 +3402,12 @@ fi
 
 # - Sript change_ssl_directives.sh
 # 
-if [[ -f "${DH_BASE_DIR}/tools/change_ssl_directives.sh" ]]; then
+if [[ -f "${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}" ]]; then
 
    # - Backup existing script change_ssl_directives.sh
    # -
-   echononl "   Backup ${DH_BASE_DIR}/tools/change_ssl_directives.sh.."
-   cp -a ${DH_BASE_DIR}/tools/change_ssl_directives.sh ${DH_BASE_DIR}/tools/change_ssl_directives.sh.$_date > /dev/null 2>&1
+   echononl "   Backup ${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}.."
+   cp -a "${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}" "${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}.$_date" > /dev/null 2>&1
    if [[ $? -eq 0 ]]; then
       echo_ok
    else
@@ -3309,8 +3416,8 @@ if [[ -f "${DH_BASE_DIR}/tools/change_ssl_directives.sh" ]]; then
 fi
 
 
-echononl "   Install script \"change_ssl_directives.sh\" into ${DH_BASE_DIR}/tools/"
-cat <<EOF > ${DH_BASE_DIR}/tools/change_ssl_directives.sh
+echononl "   Install script \"$(basename "${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}")\" into ${DH_BASE_DIR}/tools/"
+cat <<EOF > ${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}
 #!/usr/bin/env bash
 
 # - Changes "SSLCertificate.."-lines in vhost configuration
@@ -3729,20 +3836,20 @@ else
    echo_failed
 fi
 
-echononl "   Make \"${DH_BASE_DIR}/tools/change_ssl_directives.sh\" executable.."
-chmod 755 ${DH_BASE_DIR}/tools/change_ssl_directives.sh
+echononl "   Make \"${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}\" executable.."
+chmod 755 "${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}"
 if [[ $? -eq 0 ]]; then
    echo_ok
 else
    echo_failed
 fi
 
-if [[ -f "${DH_BASE_DIR}/tools/change_ssl_directives.sh.$_date" ]]; then
-   diff ${DH_BASE_DIR}/tools/change_ssl_directives.sh ${DH_BASE_DIR}/tools/change_ssl_directives.sh.$_date > /dev/null 2>&1
+if [[ -f "${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}.$_date" ]]; then
+   diff "${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}" "${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}.$_date" > /dev/null 2>&1
    if [[ $? -eq 0 ]]; then
-      info "Script change_ssl_directives.sh has not change.\n\t          Removing previously created backup.."
-      echononl "   Remove ${DH_BASE_DIR}/tools/change_ssl_directives.sh.$_date.."
-      rm -f ${DH_BASE_DIR}/tools/change_ssl_directives.sh.$_date
+      info "Script $(basename "${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}") has not change.\n\t          Removing previously created backup.."
+      echononl "   Remove ${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}.$_date.."
+      rm -f "${DH_UPDATE_SSL_DIRECTIVES_SCRIPT}.$_date"
       if [[ $? -eq 0 ]]; then
          echo_ok
       else