diff --git a/README.install b/README.install
index 00c1276..2056616 100644
--- a/README.install
+++ b/README.install
@@ -73,3 +73,7 @@
 
 6.) Install OpenDKIM
    - run script 'install_opendkim.sh'.
+
+
+7.) Install OpenDMARC
+   - run script 'install_opendmarc.sh'.
diff --git a/install_opendmarc.sh b/install_opendmarc.sh
new file mode 100755
index 0000000..97ff2ac
--- /dev/null
+++ b/install_opendmarc.sh
@@ -0,0 +1,504 @@
+#!/usr/bin/env bash
+
+clear
+echo -e "\n   \033[32mStart Installation of OpenDMARC..\033[m"
+
+
+
+# -------------
+# - Settings
+# -------------
+
+#_src_base_dir="$(realpath $(dirname $0))"
+#conf_file="${_src_base_dir}/conf/install_opendmarc.conf"
+
+config_file_name_value_parameters="
+   AuthservID:OpenDMARC
+   PidFile:/var/run/opendmarc/opendmarc.pid
+   RejectFailures:true
+   Syslog:true
+   SyslogFacility:mail
+   TrustedAuthservIDs:localhost,$(hostname -f)
+   IgnoreHosts:/etc/opendmarc/ignore.hosts
+   IgnoreAuthenticatedClients:true
+   RequiredHeaders:true
+   UMask:002
+   FailureReports:false
+   AutoRestart:true
+   HistoryFile:/var/log/opendmarc.log
+   SPFSelfValidate:true
+"
+declare -a  config_file_name_value_parameter_arr=()
+for _conf in $config_file_name_value_parameters ; do
+   config_file_name_value_parameter_arr+=("$_conf")
+done
+
+log_file="$(mktemp)"
+
+_opendmarc_packages="opendmarc"
+
+opendmarc_base_dir="/etc/opendmarc"
+opendmarc_conf_file="/etc/opendmarc.conf"
+
+postfix_spool_dir="/var/spool/postfix"
+
+opendmarc_socket_dir="${postfix_spool_dir}/opendmarc"
+opendmarc_socket_file="${opendmarc_socket_dir}/opendmarc.sock"
+
+postfix_needs_restart=false
+opendmarc_needs_restart=false
+
+# -------------
+# --- Some functions
+# -------------
+echononl(){
+   echo X\\c > /tmp/shprompt$$
+   if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then
+      echo -e -n "$*\\c" 1>&2
+   else
+       echo -e -n "$*" 1>&2
+   fi
+   rm /tmp/shprompt$$
+}
+
+fatal(){
+   echo ""
+   echo -e "fatal error: $*"
+   echo ""
+   echo -e "\t\033[31m\033[1mInstalllation will be interrupted\033[m\033[m"
+   echo ""
+   exit 1
+}
+
+error(){
+   echo ""
+   echo -e "\t[ \033[31m\033[1mFehler\033[m ]: $*"
+   echo ""
+}
+
+warn (){
+   echo ""
+   echo -e "\t[ \033[33m\033[1mWarning\033[m ]: $*"
+   echo ""
+}
+
+info (){
+   echo ""
+   echo -e "\t[ \033[32m\033[1mInfo\033[m ]: $*"
+   echo ""
+}
+
+echo_done() {
+   echo -e "\033[80G[ \033[32mdone\033[m ]"
+}
+echo_ok() {
+   echo -e "\033[80G[ \033[32mok\033[m ]"
+}
+echo_warning() {
+   echo -e "\033[80G[ \033[33m\033[1mwarn\033[m ]"
+}
+echo_failed(){
+   echo -e "\033[80G[ \033[1;31mfailed\033[m ]"
+}
+echo_skipped() {
+   echo -e "\033[80G[ \033[37mskipped\033[m ]"
+}
+
+
+# -------------
+# - Some pre-installation tasks
+# -------------
+
+# - Is 'systemd' supported on this system
+# -
+if [ "X`which systemd`" = "X" ]; then
+   SYSTEMD_EXISTS=false
+else
+   SYSTEMD_EXISTS=true
+fi
+
+
+
+# =============
+# - Start Installation
+# =============
+
+echo ""
+
+# - Synchronise package index files with the repository
+# -
+echononl "   Synchronise package index files with the repository.."
+apt-get update > "$log_file" 2>&1
+if [[ $? -eq 0 ]] ; then
+   echo_ok
+else
+   echo_failed
+   error "$(cat $log_file)"
+fi
+
+
+# - Install opendmarc
+# -
+echononl "   Install needed debian packages.."
+opendmarc_packages=""
+packages_installed=false
+for _pkg in $_opendmarc_packages ; do
+   if aptitude search "$_pkg" | grep " $_pkg " | grep -e "^i" > /dev/null 2>&1 ; then
+      continue
+   else
+      opendmarc_packages="$opendmarc_packages $_pkg"
+   fi
+done
+if [[ -n "$opendmarc_packages" ]]; then
+   DEBIAN_FRONTEND=noninteractive apt-get -y install $opendmarc_packages > /dev/null 2> "$log_file"
+   packages_installed=true
+   opendmarc_needs_restart=true
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+else
+   echo_skipped
+fi
+
+
+# - Add user 'postfix' to group 'opendmarc'
+# -
+echononl "   Add user 'postfix' to group 'opendmarc'.."
+if grep -E "^opendmarc" /etc/group | grep -q postfix 2> /dev/null ; then
+   echo_skipped
+else
+   usermod -a -G opendmarc postfix > "$log_file" 2>&1
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+fi
+
+
+# - Save configuration file from distribution
+# -
+echononl "   Save configuration file from distribution"
+if [[ -f "${opendmarc_conf_file}.ORIG" ]] ; then
+   echo_skipped
+else
+   cp -a $opendmarc_conf_file $opendmarc_conf_file.ORIG 2> "$log_file"
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+fi
+
+for _val in "${config_file_name_value_parameter_arr[@]}" ; do
+   IFS=':' read -a _val_arr <<< "${_val}"
+
+   echononl "   $opendmarc_conf_file: ${_val_arr[0]} -> ${_val_arr[1]}.."
+   if $(grep -E -q "^\s*${_val_arr[0]}\s+${_val_arr[1]}\s*$" $opendmarc_conf_file 2> /dev/null) ; then
+      echo_skipped
+   elif $(grep -E -q "^\s*#\s*${_val_arr[0]}\s+" $opendmarc_conf_file 2> /dev/null); then
+      perl -i -n -p -e "s&^(\s*#\s*${_val_arr[0]}.*)&\1\n${_val_arr[0]} ${_val_arr[1]}&" $opendmarc_conf_file > "$log_file" 2>&1
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+         opendmarc_needs_restart=true
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
+   elif $(grep -E -q "^\s*${_val_arr[0]}\s+" $opendmarc_conf_file 2> /dev/null) ; then
+      perl -i -n -p -e "s#^(\s*${_val_arr[0]}.*)#\#\1\n${_val_arr[0]} ${_val_arr[1]}#" $opendmarc_conf_file > "$log_file" 2>&1
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+         opendmarc_needs_restart=true
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
+   else
+      cat <<EOF >> $opendmarc_conf_file 2> "$log_file"
+
+${_val_arr[0]} ${_val_arr[1]}
+EOF
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+         opendmarc_needs_restart=true
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
+   fi
+done
+
+
+# - Assign ownership to the opendmarc user and restrict tthe
+# - file permissions:
+# -
+echononl "   Assign file permissions to '$opendmarc_conf_file'.."
+chmod u=rw,go=r $opendmarc_conf_file 2> $log_file
+if [[ $? -eq 0 ]] ; then
+   echo_ok
+else
+   echo_failed
+   error "$(cat $log_file)"
+fi
+
+
+# - Create the directories to hold opendmarc's data files, assign 
+# - ownership to the opendmarc user, and restrict the file 
+# - permissions:
+# -
+echononl "   Create directory '$opendmarc_base_dir'"
+if [[ -d "$opendmarc_base_dir" ]] ; then
+   echo_skipped
+else
+   opendmarc_needs_restart=true
+   mkdir ${opendmarc_base_dir} 2> $log_file
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+fi
+echononl "   Set ownership on directory '${opendmarc_base_dir}' (recursive).."
+chown -R opendmarc:opendmarc ${opendmarc_base_dir} 2> $log_file
+if [[ $? -eq 0 ]] ; then
+   echo_ok
+else
+   echo_failed
+   error "$(cat $log_file)"
+fi
+
+
+
+# - Create the file ${opendmarc_base_dir}/ignore.hosts
+# -
+echononl "   Create file '${opendmarc_base_dir}/ignore.hosts'.."
+if [[ -f "${opendmarc_base_dir}/ignore.hosts" ]] ; then
+   echo_skipped
+else
+   cat <<EOF > ${opendmarc_base_dir}/ignore.hosts 2> $log_file
+127.0.0.1
+::1
+localhost
+$(hostname -f)
+EOF
+   opendmarc_needs_restart=true
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+fi
+
+
+# - Edit /etc/default/opendmarc
+# -
+# - Set:
+# -    SOCKET="local:${postfix_spool_dir}/opendmarc/opendmarc.sock"
+# -
+echononl "   Set 'SOCKET' at file /etc/default/opendmarc.."
+if grep -q -E "^\s*SOCKET" /etc/default/opendmarc 2>/dev/null ; then
+   if grep -q -E "^\s*SOCKET\s*=\s*\"*local:$opendmarc_socket_file" /etc/default/opendmarc  2>/dev/null ; then
+      echo_skipped
+   else
+      perl -i -n -p -e "s#^\s*SOCKET=.*#SOCKET=\"local:$opendmarc_socket_file\"#" /etc/default/opendmarc 2> $log_file
+      opendmarc_needs_restart=true
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
+   fi
+else
+   cat <<EOF >>/etc/default/opendmarc 2> $log_file
+SOCKET="local:$opendmarc_socket_file"
+EOF
+   opendmarc_needs_restart=true
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+fi
+
+
+# - Create the opendmarc socket directory in Postfix’s work area 
+# - and make sure it has the correct ownership:
+# -
+echononl "   Create the opendmarc socket directory in Postfix's work area.."
+if [[ -d "${postfix_spool_dir}/opendmarc" ]] ; then
+   echo_skipped
+else
+   mkdir ${postfix_spool_dir}/opendmarc 2> $log_file
+   opendmarc_needs_restart=true
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+   echononl "   Set ownership on directory '${postfix_spool_dir}/opendmarc'.."
+   chown opendmarc:postfix ${postfix_spool_dir}/opendmarc 2> $log_file
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+fi
+
+
+# - Edit /etc/postfix/main.cf and add a section to activate 
+# - processing of e-mail through the opendmarc daemon:
+# -
+backup_date="$(date +%Y-%m-%d-%H%M)"
+echononl "   Backup existing postfix configuration (main.cf).."
+cp -a /etc/postfix/main.cf /etc/postfix/main.cf.$backup_date 2> $log_file
+if [[ $? -eq 0 ]] ; then
+   echo_ok
+else
+   echo_failed
+   error "$(cat $log_file)"
+fi
+
+echononl "   Set Variable non_smtpd_milters at '/etc/postfix/main.cf'.."
+if $(grep -q -E "^\s*non_smtpd_milters\s*=\s*.*opendkim.sock" /etc/postfix/main.cf 2> /dev/null) ; then
+   if $(grep -q -E "^\s*non_smtpd_milters\s*=\s*.*${opendmarc_socket_file}" /etc/postfix/main.cf); then
+      echo_skipped
+   else
+      perl -i -n -p -e "s&^\s*(non_smtpd_milters\s*=.*opendkim.sock)&\1,local:/$(basename "${opendmarc_socket_dir}")/$(basename "${opendmarc_socket_file}")&" \
+         /etc/postfix/main.cf > $log_file 2>&1
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
+   fi
+else
+   echo_skipped
+   warn "Postfix is not adjusted. Complete Postfix configuration (main.cf) manually\!"
+fi
+
+
+# - Prevent Postfix from setting the DMARC Header twice (one befor
+# - and one after processing amavis
+# -
+# - To disable milter processing after amavis, add to your master.cf in 
+# - the after-amavis section:
+# -    127.0.0.1:10025 inet    n       -       -       -       -       smtpd
+# -       [...]
+# -       -o smtpd_milters=
+# -
+# - If you want to run the milter after amavis, set in main.cf
+# -    smtpd_milters= 
+# - to an empty string and add the smtpd_milters configuration to master.cf 
+# - (after-section amavis) instead:
+# -    -o smtpd_milters=local:/opendmarc/opendmarc.sock
+# -
+echononl "   Backup file '/etc/postfix/master.cf'.."
+cp -a /etc/postfix/master.cf /etc/postfix/master.cf.$backup_date 2> $log_file
+if [[ $? -eq 0 ]] ; then
+   echo_ok
+else
+   echo_failed
+   error "$(cat $log_file)"
+fi
+
+echononl "   Adjust /etc/postfix/master.cf. Set DMARC after sending throuh AmaVIS.."
+if $(grep -q -E "^\s*-o\s+smtpd_milters\s*=\s*.*opendkim.sock" /etc/postfix/master.cf 2> /dev/null) ; then
+   if $(grep -q -E "^\s*-o\s+smtpd_milters\s*=\s*.*$(basename ${opendmarc_socket_file})" /etc/postfix/master.cf); then
+      echo_skipped
+   else
+      perl -i -n -p -e "s&(^\s*-o\s+smtpd_milters\s*=.*)&\1,local:/$(basename "${opendmarc_socket_dir}")/$(basename "${opendmarc_socket_file}")&" \
+         /etc/postfix/master.cf > $log_file 2>&1
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
+   fi
+else
+   echo_skipped
+   warn "Postfix is not adjusted. Complete Postfix configuration (master.cf) manually\!"
+fi
+
+echo ""
+
+echononl "   Enable OpenDMARC Service"
+if $SYSTEMD_EXISTS ; then
+   systemctl enable opendmarc > $log_file 2>&1
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+else
+   warn "Maybe OpenDMARC Service is not enabled, because its an old non-systemd os.."
+fi
+
+# - Restart opendmarc
+# - 
+echononl "   Restart opendmarc.."
+if $opendmarc_needs_restart ; then
+   if $SYSTEMD_EXISTS ; then
+      systemctl restart opendmarc > $log_file 2>&1
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
+   else
+      /etc/init.d/opendmarc restart > $log_file 2>&1
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
+   fi
+else
+   echo_skipped
+fi
+
+
+# - Restart Postfix so it starts using opendmarc when processing mail:
+# -
+echononl "   Restart Postfix.."
+if $postfix_needs_restart ; then
+   if $SYSTEMD_EXISTS ; then
+      systemctl restart postfix > $log_file 2>&1
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
+   else
+      /etc/init.d/postfix restart > $log_file 2>&1
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
+   fi
+else
+   echo_skipped
+fi
+
+echo ""
+rm -f "$log_file"
+exit 0