install_update_dovecot-2.4.sh: increase sieve_max_redirects to 25.

DOC/DMARC-Report/daily-run.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+BASE="/var/lib/dmarc"
+TODAY_DIR="$BASE/reports/$(date -u +%Y/%m/%d)"
+OUTDIR="$BASE/exports"
+CSV="$OUTDIR/records.csv"
+LOGF="$BASE/logs/scan-$(date -u +%F).log"
+
+mkdir -p "$OUTDIR"
+
+if [[ -d "$TODAY_DIR" ]]; then
+  /usr/local/bin/dmarc-scan.sh "$TODAY_DIR"     --domain fluechtlingsrat-brandenburg.de     --csv "$CSV" --append     --top 25     --outdir "$OUTDIR"     >> "$LOGF" 2>&1
+fi

DOC/DMARC-Report/dmarc-collect.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+BASE="/var/lib/dmarc"
+INBOX="$BASE/reports"
+PROC="$BASE/processed"
+LOGF="$BASE/logs/collector.log"
+
+umask 027
+
+TMPDIR="$(mktemp -d)"
+EML="$TMPDIR/mail.eml"
+cat > "$EML"
+
+ripmime --no-nameless --name-by-type --overwrite -i "$EML" -d "$TMPDIR" >>"$LOGF" 2>&1 || true
+
+TODAY="$(date -u +%Y/%m/%d)"
+OUTDIR="$INBOX/$TODAY"
+mkdir -p "$OUTDIR"
+
+moved=0
+shopt -s nullglob
+for f in "$TMPDIR"/*; do
+  case "$f" in
+    *.xml|*.XML|*.gz|*.zip)
+      sha="$(sha256sum "$f" | awk '{print $1}')"
+      base="$(basename "$f")"
+      dst="$OUTDIR/$(date -u +%Y%m%dT%H%M%SZ)_${sha:0:12}_$base"
+      mv "$f" "$dst"
+      echo "$(date -Is) stored $dst" >> "$LOGF"
+      moved=$((moved+1))
+      ;;
+    *) : ;;
+  esac
+done
+
+mkdir -p "$PROC"
+mv "$EML" "$PROC/$(date -u +%Y%m%dT%H%M%SZ)_mail.eml" || true
+rm -rf "$TMPDIR"
+
+if (( moved > 0 )); then
+  exit 0
+else
+  echo "$(date -Is) no usable attachment in message" >> "$LOGF"
+  exit 0
+fi
+

DOC/DMARC-Report/dmarc-scan-setup.md

@@ -0,0 +1,382 @@
+
+# DMARC-Auswertungsskript `dmarc-scan.sh` – Installation, Beschreibung & Verwendung
+
+## 📖 Zweck
+
+`dmarc-scan.sh` analysiert DMARC-Aggregatberichte (XML, .zip, .gz) und erzeugt:
+- gut lesbare Tabellen im Terminal,
+- eine fortschreibbare Records-CSV (`--append`),
+- Top-Listen nach IPs (gesamt und je Fail-Kategorie) als CSV.
+
+---
+
+## ⚙️ Installation
+
+```bash
+sudo apt install -y xmlstarlet unzip gzip
+sudo tee /usr/local/bin/dmarc-scan.sh >/dev/null <<'EOF'
+#!/usr/bin/env bash
+#
+# dmarc-scan.sh — DMARC-XML-Reports (auch .gz/.zip) einlesen, tabellarisch anzeigen,
+#                  Records als CSV exportieren (append optional), Top-IPs ermitteln
+#                  und Top-Listen als CSV schreiben.
+#
+# Nutzung:
+#   ./dmarc-scan.sh /pfad/zu/reports \
+#       [--domain DOMAIN] \
+#       [--csv pfad/zur/records.csv] \
+#       [--append] \
+#       [--top N] \
+#       [--outdir pfad/zum/ordner]
+#
+# Beispiele:
+#   ./dmarc-scan.sh /var/mail/dmarc
+#   ./dmarc-scan.sh /var/mail/dmarc --domain fluechtlingsrat-brandenburg.de --csv dmarc.csv --append --top 15 --outdir ./export
+#
+# Voraussetzungen: xmlstarlet, unzip (für .zip), gzip (für .gz)
+#   Debian/Ubuntu: sudo apt-get install xmlstarlet unzip gzip
+#
+set -euo pipefail
+
+REPORT_DIR="${1:-}"
+shift || true
+
+# Defaults
+WANT_DOMAIN=""
+CSV_PATH="./dmarc-summary.csv"
+APPEND=0
+TOP_N=10
+OUTDIR="."
+
+# Arg-Parsing (einfach)
+while [[ $# -gt 0 ]]; do
+  case "${1:-}" in
+    --domain)
+      WANT_DOMAIN="${2:-}"; shift 2 || true ;;
+    --csv)
+      CSV_PATH="${2:-}"; shift 2 || true ;;
+    --append)
+      APPEND=1; shift || true ;;
+    --top)
+      TOP_N="${2:-10}"; shift 2 || true ;;
+    --outdir)
+      OUTDIR="${2:-.}"; shift 2 || true ;;
+    *)
+      # Unbekannte Option ignorieren
+      shift || true ;;
+  esac
+done
+
+if [[ -z "$REPORT_DIR" || ! -d "$REPORT_DIR" ]]; then
+  echo "Fehler: Bitte ein Verzeichnis mit DMARC-Reports angeben."
+  echo "Beispiel: $0 /var/mail/dmarc --domain fluechtlingsrat-brandenburg.de --csv dmarc.csv --append --top 15 --outdir ./export"
+  exit 1
+fi
+
+if ! command -v xmlstarlet >/dev/null 2>&1; then
+  echo "Fehler: xmlstarlet nicht gefunden. Bitte installieren (z.B. 'sudo apt-get install xmlstarlet')."
+  exit 1
+fi
+
+mkdir -p "$OUTDIR"
+
+# CSV-Header für Records; bei --append nur schreiben, wenn Datei noch nicht existiert
+RECORDS_HEADER="report_org,policy_domain,begin_utc,end_utc,source_ip,count,disposition,spf,dkim,header_from"
+ensure_records_header() {
+  if [[ "$APPEND" -eq 1 ]]; then
+    if [[ ! -f "$CSV_PATH" ]]; then
+      echo "$RECORDS_HEADER" > "$CSV_PATH"
+    fi
+  else
+    echo "$RECORDS_HEADER" > "$CSV_PATH"
+  fi
+}
+ensure_records_header
+
+# Zähler & Sets
+declare -A SEEN_IPS=()
+declare -A IP_COUNTS=()         # Summe pro IP
+declare -A SPF_ONLY_FAIL_IP=()  # nur SPF fail pro IP
+declare -A DKIM_ONLY_FAIL_IP=() # nur DKIM fail pro IP
+declare -A BOTH_FAIL_IP=()      # SPF+DKIM fail pro IP
+
+total_msgs=0
+pass_msgs=0
+fail_msgs=0
+spf_only_fail=0
+dkim_only_fail=0
+both_fail=0
+
+# Hilfsfunktion: Epoch -> Datum (UTC)
+epoch2date() {
+  local e="$1"
+  if [[ -z "$e" ]]; then printf "-"; return; fi
+  date -u -d @"$e" +"%Y-%m-%d %H:%M:%S UTC" 2>/dev/null || printf "%s" "$e"
+}
+
+# CSV-escape (Felder in Anführungszeichen, doppelte Anführungszeichen verdoppeln)
+csv_escape() {
+  local s="${1:-}"
+  s="${s//\"/\"\"}"
+  printf "\"%s\"" "$s"
+}
+
+# Eine einzelne XML-Datei parsen
+parse_xml() {
+  local xml_input="$1"
+
+  # Domain aus policy_published, ggf. für Filter
+  local domain
+  domain=$(xmlstarlet sel -T -t -v "/feedback/policy_published/domain" "$xml_input" 2>/dev/null || true)
+  if [[ -n "$WANT_DOMAIN" && "$domain" != "$WANT_DOMAIN" ]]; then
+    return 0
+  fi
+
+  local org begin end pol sp aspf adkim
+  org=$(xmlstarlet sel -T -t -v "/feedback/report_metadata/org_name" "$xml_input" 2>/dev/null || printf "-")
+  begin=$(xmlstarlet sel -T -t -v "/feedback/report_metadata/date_range/begin" "$xml_input" 2>/dev/null || printf "")
+  end=$(xmlstarlet sel -T -t -v "/feedback/report_metadata/date_range/end" "$xml_input" 2>/dev/null || printf "")
+  pol=$(xmlstarlet sel -T -t -v "/feedback/policy_published/p" "$xml_input" 2>/dev/null || printf "-")
+  sp=$(xmlstarlet sel -T -t -v "/feedback/policy_published/sp" "$xml_input" 2>/dev/null || printf "-")
+  aspf=$(xmlstarlet sel -T -t -v "/feedback/policy_published/aspf" "$xml_input" 2>/dev/null || printf "-")
+  adkim=$(xmlstarlet sel -T -t -v "/feedback/policy_published/adkim" "$xml_input" 2>/dev/null || printf "-")
+
+  # Report-Header
+  echo "=============================================================================="
+  echo "Report von:       ${org}"
+  echo "Domain (Policy):  ${domain}  (p=${pol}, sp=${sp}, aspf=${aspf}, adkim=${adkim})"
+  echo "Zeitraum:         $(epoch2date "$begin")  –  $(epoch2date "$end")"
+  echo "------------------------------------------------------------------------------"
+  printf "%-16s  %7s  %-10s  %-6s  %-6s  %s\n" "Source IP" "Count" "Disposition" "SPF" "DKIM" "Header-From"
+  echo "------------------------------------------------------------------------------"
+
+  # Alle <record>-Einträge tabellarisch ausgeben
+  while IFS='|' read -r ip cnt dispo spfres dkimres hfrom; do
+    [[ -z "$ip$cnt$dispo$spfres$dkimres$hfrom" ]] && continue
+
+    local n=0
+    if [[ -n "${cnt:-}" && "$cnt" =~ ^[0-9]+$ ]]; then n="$cnt"; fi
+
+    total_msgs=$(( total_msgs + n ))
+    [[ -n "$ip" ]] && SEEN_IPS["$ip"]=1
+    [[ -n "$ip" ]] && IP_COUNTS["$ip"]=$(( ${IP_COUNTS["$ip"]:-0} + n ))
+
+    if [[ "${spfres:-}" == "pass" && "${dkimres:-}" == "pass" ]]; then
+      pass_msgs=$(( pass_msgs + n ))
+    else
+      fail_msgs=$(( fail_msgs + n ))
+      if [[ "${spfres:-}" != "pass" && "${dkimres:-}" == "pass" ]]; then
+        spf_only_fail=$(( spf_only_fail + n ))
+        [[ -n "$ip" ]] && SPF_ONLY_FAIL_IP["$ip"]=$(( ${SPF_ONLY_FAIL_IP["$ip"]:-0} + n ))
+      elif [[ "${spfres:-}" == "pass" && "${dkimres:-}" != "pass" ]]; then
+        dkim_only_fail=$(( dkim_only_fail + n ))
+        [[ -n "$ip" ]] && DKIM_ONLY_FAIL_IP["$ip"]=$(( ${DKIM_ONLY_FAIL_IP["$ip"]:-0} + n ))
+      else
+        both_fail=$(( both_fail + n ))
+        [[ -n "$ip" ]] && BOTH_FAIL_IP["$ip"]=$(( ${BOTH_FAIL_IP["$ip"]:-0} + n ))
+      fi
+    fi
+
+    printf "%-16s  %7s  %-10s  %-6s  %-6s  %s\n" "${ip:--}" "${n}" "${dispo:--}" "${spfres:--}" "${dkimres:--}" "${hfrom:--}"
+
+    local begin_human end_human
+    begin_human="$(epoch2date "$begin")"
+    end_human="$(epoch2date "$end")"
+    {
+      csv_escape "$org"; printf ","
+      csv_escape "$domain"; printf ","
+      csv_escape "$begin_human"; printf ","
+      csv_escape "$end_human"; printf ","
+      csv_escape "${ip:-}"; printf ","
+      printf "%s," "$n"
+      csv_escape "${dispo:-}"; printf ","
+      csv_escape "${spfres:-}"; printf ","
+      csv_escape "${dkimres:-}"; printf ","
+      csv_escape "${hfrom:-}"; printf "\n"
+    } >> "$CSV_PATH"
+
+  done < <(xmlstarlet sel -T -t \
+      -m "/feedback/record" \
+      -v "row/source_ip" -o "|" \
+      -v "row/count" -o "|" \
+      -v "row/policy_evaluated/disposition" -o "|" \
+      -v "row/policy_evaluated/spf" -o "|" \
+      -v "row/policy_evaluated/dkim" -o "|" \
+      -v "identifiers/header_from" -n \
+      "$xml_input" 2>/dev/null)
+
+  echo
+}
+
+# Alle Dateien im Verzeichnis verarbeiten
+shopt -s nullglob
+for f in "$REPORT_DIR"/*; do
+  case "$f" in
+    *.xml)
+      parse_xml "$f"
+      ;;
+    *.gz)
+      if command -v gzip >/dev/null 2>&1; then
+        tmp="$(mktemp)"
+        if gzip -cd "$f" > "$tmp"; then
+          parse_xml "$tmp"
+        else
+          echo "Warnung: Konnte $f nicht entpacken."
+        fi
+        rm -f "$tmp"
+      else
+        echo "Warnung: gzip nicht verfügbar, überspringe $f"
+      fi
+      ;;
+    *.zip)
+      if command -v unzip >/dev/null 2>&1; then
+        tmpdir="$(mktemp -d)"
+        if unzip -qq -j "$f" '*.xml' -d "$tmpdir" >/dev/null 2>&1; then
+          for x in "$tmpdir"/*.xml; do
+            [[ -e "$x" ]] || continue
+            parse_xml "$x"
+          done
+        else
+          echo "Warnung: Konnte $f nicht entpacken (oder keine XML darin)."
+        fi
+        rm -rf "$tmpdir"
+      else
+        echo "Warnung: unzip nicht verfügbar, überspringe $f"
+      fi
+      ;;
+    *) : ;;
+  esac
+done
+
+# Zusammenfassung
+unique_ips=${#SEEN_IPS[@]}
+echo "==============================================================================" 
+echo "GESAMT-ZUSAMMENFASSUNG"
+echo "Nachrichten gesamt:         $total_msgs"
+echo "Eindeutige Source-IPs:      $unique_ips"
+echo "Alle Auth PASS:             $pass_msgs"
+echo "SPF/DKIM Fehler gesamt:     $fail_msgs"
+echo "  ├─ nur SPF-Fail:          $spf_only_fail"
+echo "  ├─ nur DKIM-Fail:         $dkim_only_fail"
+echo "  └─ SPF+DKIM-Fail:         $both_fail"
+[[ -n "$WANT_DOMAIN" ]] && echo "Gefilterte Domain:          $WANT_DOMAIN"
+echo "Records-CSV:                $CSV_PATH"
+echo "Hinweis: 'Fail' umfasst Records, bei denen SPF oder DKIM nicht 'pass' war."
+
+# Top-Listen auf STDOUT
+echo
+echo "TOP $TOP_N IPs nach Anzahl (über alle Reports):"
+{
+  for ip in "${!IP_COUNTS[@]}"; do
+    printf "%10d %s\n" "${IP_COUNTS[$ip]}" "$ip"
+  done
+} | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+
+if (( fail_msgs > 0 )); then
+  echo
+  echo "Top-IPs nur SPF-Fail:"
+  { for ip in "${!SPF_ONLY_FAIL_IP[@]}"; do printf "%10d %s\n" "${SPF_ONLY_FAIL_IP[$ip]}" "$ip"; done; } \
+    | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+  echo
+  echo "Top-IPs nur DKIM-Fail:"
+  { for ip in "${!DKIM_ONLY_FAIL_IP[@]}"; do printf "%10d %s\n" "${DKIM_ONLY_FAIL_IP[$ip]}" "$ip"; done; } \
+    | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+  echo
+  echo "Top-IPs SPF+DKIM-Fail:"
+  { for ip in "${!BOTH_FAIL_IP[@]}"; do printf "%10d %s\n" "${BOTH_FAIL_IP[$ip]}" "$ip"; done; } \
+    | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+fi
+
+# ---- CSV-Exporte der Top-Listen ---------------------------------------------
+
+write_top_csv () {
+  local outfile="$1"; shift
+  local -n assoc="$1"   # name reference auf assoziatives Array
+  echo "ip,count" > "$outfile"
+  if [[ "${#assoc[@]}" -eq 0 ]]; then
+    : # leer
+  else
+    for ip in "${!assoc[@]}"; do
+      printf "%s,%s\n" "$ip" "${assoc[$ip]}"
+    done | sort -t, -k2,2nr > "$outfile"
+  fi
+}
+
+# Gesamt-Top-IPs
+write_top_csv "$OUTDIR/top_ips.csv" IP_COUNTS
+
+# Top-Listen nach Fail-Kategorien
+write_top_csv "$OUTDIR/top_spf_fail_ips.csv" SPF_ONLY_FAIL_IP
+write_top_csv "$OUTDIR/top_dkim_fail_ips.csv" DKIM_ONLY_FAIL_IP
+write_top_csv "$OUTDIR/top_both_fail_ips.csv" BOTH_FAIL_IP
+
+echo
+echo "Exportierte Top-CSV-Dateien:"
+echo "  $OUTDIR/top_ips.csv"
+echo "  $OUTDIR/top_spf_fail_ips.csv"
+echo "  $OUTDIR/top_dkim_fail_ips.csv"
+echo "  $OUTDIR/top_both_fail_ips.csv"
+
+EOF
+sudo chmod 750 /usr/local/bin/dmarc-scan.sh
+```
+
+---
+
+## 🧩 Verwendung
+
+Grundbeispiel:
+```bash
+dmarc-scan.sh /var/lib/dmarc/reports/2025/11/12
+```
+
+Mit Optionen:
+```bash
+dmarc-scan.sh /var/lib/dmarc/reports/2025/11/12   --domain fluechtlingsrat-brandenburg.de   --csv /var/lib/dmarc/exports/records.csv   --append   --top 25   --outdir /var/lib/dmarc/exports/
+```
+
+### Parameterübersicht
+
+| Parameter | Bedeutung |
+|------------|------------|
+| `--domain <domain>` | Filtert Berichte auf bestimmte Domain |
+| `--csv <pfad>` | Pfad zur Ausgabedatei (Records-CSV) |
+| `--append` | Bestehende CSV fortschreiben statt überschreiben |
+| `--top <N>` | Anzahl der angezeigten Top-IPs |
+| `--outdir <pfad>` | Zielverzeichnis für Top-Listen (CSV) |
+
+---
+
+## 📊 Ausgabedateien
+
+| Datei | Inhalt |
+|-------|---------|
+| `records.csv` | Alle Einzel-Records |
+| `top_ips.csv` | IPs mit den meisten Mails |
+| `top_spf_fail_ips.csv` | IPs mit nur SPF-Fails |
+| `top_dkim_fail_ips.csv` | IPs mit nur DKIM-Fails |
+| `top_both_fail_ips.csv` | IPs mit SPF+DKIM-Fails |
+
+---
+
+## 🔁 Integration in den Serverbetrieb
+
+Das Skript wird typischerweise durch den täglichen Job `/usr/local/lib/dmarc/daily-run.sh` aufgerufen.  
+Manuelle Nutzung ist jederzeit möglich.
+
+---
+
+## 🧩 Kontext – Verzeichnisstruktur (empfohlen)
+
+```
+/var/lib/dmarc/
+├── reports/      # Eingehende Rohdaten (XML, ZIP, GZ) – nach Datum
+├── exports/      # CSV- und Top-Dateien
+└── logs/         # Logausgaben der täglichen Auswertung
+```
+
+---
+
+**Autor:** oopen.de / Systemkonfiguration  
+**Stand:** November 2025  
+**Version:** 1.2

DOC/DMARC-Report/dmarc-scan.sh

@@ -0,0 +1,301 @@
+#!/usr/bin/env bash
+#
+# dmarc-scan.sh — DMARC-XML-Reports (auch .gz/.zip) einlesen, tabellarisch anzeigen,
+#                  Records als CSV exportieren (append optional), Top-IPs ermitteln
+#                  und Top-Listen als CSV schreiben.
+#
+# Nutzung:
+#   ./dmarc-scan.sh /pfad/zu/reports \
+#       [--domain DOMAIN] \
+#       [--csv pfad/zur/records.csv] \
+#       [--append] \
+#       [--top N] \
+#       [--outdir pfad/zum/ordner]
+#
+# Beispiele:
+#   ./dmarc-scan.sh /var/mail/dmarc
+#   ./dmarc-scan.sh /var/mail/dmarc --domain fluechtlingsrat-brandenburg.de --csv dmarc.csv --append --top 15 --outdir ./export
+#
+# Voraussetzungen: xmlstarlet, unzip (für .zip), gzip (für .gz)
+#   Debian/Ubuntu: sudo apt-get install xmlstarlet unzip gzip
+#
+set -euo pipefail
+
+REPORT_DIR="${1:-}"
+shift || true
+
+# Defaults
+WANT_DOMAIN=""
+CSV_PATH="./dmarc-summary.csv"
+APPEND=0
+TOP_N=10
+OUTDIR="."
+
+# Arg-Parsing (einfach)
+while [[ $# -gt 0 ]]; do
+  case "${1:-}" in
+    --domain)
+      WANT_DOMAIN="${2:-}"; shift 2 || true ;;
+    --csv)
+      CSV_PATH="${2:-}"; shift 2 || true ;;
+    --append)
+      APPEND=1; shift || true ;;
+    --top)
+      TOP_N="${2:-10}"; shift 2 || true ;;
+    --outdir)
+      OUTDIR="${2:-.}"; shift 2 || true ;;
+    *)
+      # Unbekannte Option ignorieren
+      shift || true ;;
+  esac
+done
+
+if [[ -z "$REPORT_DIR" || ! -d "$REPORT_DIR" ]]; then
+  echo "Fehler: Bitte ein Verzeichnis mit DMARC-Reports angeben."
+  echo "Beispiel: $0 /var/mail/dmarc --domain fluechtlingsrat-brandenburg.de --csv dmarc.csv --append --top 15 --outdir ./export"
+  exit 1
+fi
+
+if ! command -v xmlstarlet >/dev/null 2>&1; then
+  echo "Fehler: xmlstarlet nicht gefunden. Bitte installieren (z.B. 'sudo apt-get install xmlstarlet')."
+  exit 1
+fi
+
+mkdir -p "$OUTDIR"
+
+# CSV-Header für Records; bei --append nur schreiben, wenn Datei noch nicht existiert
+RECORDS_HEADER="report_org,policy_domain,begin_utc,end_utc,source_ip,count,disposition,spf,dkim,header_from"
+ensure_records_header() {
+  if [[ "$APPEND" -eq 1 ]]; then
+    if [[ ! -f "$CSV_PATH" ]]; then
+      echo "$RECORDS_HEADER" > "$CSV_PATH"
+    fi
+  else
+    echo "$RECORDS_HEADER" > "$CSV_PATH"
+  fi
+}
+ensure_records_header
+
+# Zähler & Sets
+declare -A SEEN_IPS=()
+declare -A IP_COUNTS=()         # Summe pro IP
+declare -A SPF_ONLY_FAIL_IP=()  # nur SPF fail pro IP
+declare -A DKIM_ONLY_FAIL_IP=() # nur DKIM fail pro IP
+declare -A BOTH_FAIL_IP=()      # SPF+DKIM fail pro IP
+
+total_msgs=0
+pass_msgs=0
+fail_msgs=0
+spf_only_fail=0
+dkim_only_fail=0
+both_fail=0
+
+# Hilfsfunktion: Epoch -> Datum (UTC)
+epoch2date() {
+  local e="$1"
+  if [[ -z "$e" ]]; then printf "-"; return; fi
+  date -u -d @"$e" +"%Y-%m-%d %H:%M:%S UTC" 2>/dev/null || printf "%s" "$e"
+}
+
+# CSV-escape (Felder in Anführungszeichen, doppelte Anführungszeichen verdoppeln)
+csv_escape() {
+  local s="${1:-}"
+  s="${s//\"/\"\"}"
+  printf "\"%s\"" "$s"
+}
+
+# Eine einzelne XML-Datei parsen
+parse_xml() {
+  local xml_input="$1"
+
+  # Domain aus policy_published, ggf. für Filter
+  local domain
+  domain=$(xmlstarlet sel -T -t -v "/feedback/policy_published/domain" "$xml_input" 2>/dev/null || true)
+  if [[ -n "$WANT_DOMAIN" && "$domain" != "$WANT_DOMAIN" ]]; then
+    return 0
+  fi
+
+  local org begin end pol sp aspf adkim
+  org=$(xmlstarlet sel -T -t -v "/feedback/report_metadata/org_name" "$xml_input" 2>/dev/null || printf "-")
+  begin=$(xmlstarlet sel -T -t -v "/feedback/report_metadata/date_range/begin" "$xml_input" 2>/dev/null || printf "")
+  end=$(xmlstarlet sel -T -t -v "/feedback/report_metadata/date_range/end" "$xml_input" 2>/dev/null || printf "")
+  pol=$(xmlstarlet sel -T -t -v "/feedback/policy_published/p" "$xml_input" 2>/dev/null || printf "-")
+  sp=$(xmlstarlet sel -T -t -v "/feedback/policy_published/sp" "$xml_input" 2>/dev/null || printf "-")
+  aspf=$(xmlstarlet sel -T -t -v "/feedback/policy_published/aspf" "$xml_input" 2>/dev/null || printf "-")
+  adkim=$(xmlstarlet sel -T -t -v "/feedback/policy_published/adkim" "$xml_input" 2>/dev/null || printf "-")
+
+  # Report-Header
+  echo "=============================================================================="
+  echo "Report von:       ${org}"
+  echo "Domain (Policy):  ${domain}  (p=${pol}, sp=${sp}, aspf=${aspf}, adkim=${adkim})"
+  echo "Zeitraum:         $(epoch2date "$begin")  –  $(epoch2date "$end")"
+  echo "------------------------------------------------------------------------------"
+  printf "%-16s  %7s  %-10s  %-6s  %-6s  %s\n" "Source IP" "Count" "Disposition" "SPF" "DKIM" "Header-From"
+  echo "------------------------------------------------------------------------------"
+
+  # Alle <record>-Einträge tabellarisch ausgeben
+  while IFS='|' read -r ip cnt dispo spfres dkimres hfrom; do
+    [[ -z "$ip$cnt$dispo$spfres$dkimres$hfrom" ]] && continue
+
+    local n=0
+    if [[ -n "${cnt:-}" && "$cnt" =~ ^[0-9]+$ ]]; then n="$cnt"; fi
+
+    total_msgs=$(( total_msgs + n ))
+    [[ -n "$ip" ]] && SEEN_IPS["$ip"]=1
+    [[ -n "$ip" ]] && IP_COUNTS["$ip"]=$(( ${IP_COUNTS["$ip"]:-0} + n ))
+
+    if [[ "${spfres:-}" == "pass" && "${dkimres:-}" == "pass" ]]; then
+      pass_msgs=$(( pass_msgs + n ))
+    else
+      fail_msgs=$(( fail_msgs + n ))
+      if [[ "${spfres:-}" != "pass" && "${dkimres:-}" == "pass" ]]; then
+        spf_only_fail=$(( spf_only_fail + n ))
+        [[ -n "$ip" ]] && SPF_ONLY_FAIL_IP["$ip"]=$(( ${SPF_ONLY_FAIL_IP["$ip"]:-0} + n ))
+      elif [[ "${spfres:-}" == "pass" && "${dkimres:-}" != "pass" ]]; then
+        dkim_only_fail=$(( dkim_only_fail + n ))
+        [[ -n "$ip" ]] && DKIM_ONLY_FAIL_IP["$ip"]=$(( ${DKIM_ONLY_FAIL_IP["$ip"]:-0} + n ))
+      else
+        both_fail=$(( both_fail + n ))
+        [[ -n "$ip" ]] && BOTH_FAIL_IP["$ip"]=$(( ${BOTH_FAIL_IP["$ip"]:-0} + n ))
+      fi
+    fi
+
+    printf "%-16s  %7s  %-10s  %-6s  %-6s  %s\n" "${ip:--}" "${n}" "${dispo:--}" "${spfres:--}" "${dkimres:--}" "${hfrom:--}"
+
+    local begin_human end_human
+    begin_human="$(epoch2date "$begin")"
+    end_human="$(epoch2date "$end")"
+    {
+      csv_escape "$org"; printf ","
+      csv_escape "$domain"; printf ","
+      csv_escape "$begin_human"; printf ","
+      csv_escape "$end_human"; printf ","
+      csv_escape "${ip:-}"; printf ","
+      printf "%s," "$n"
+      csv_escape "${dispo:-}"; printf ","
+      csv_escape "${spfres:-}"; printf ","
+      csv_escape "${dkimres:-}"; printf ","
+      csv_escape "${hfrom:-}"; printf "\n"
+    } >> "$CSV_PATH"
+
+  done < <(xmlstarlet sel -T -t \
+      -m "/feedback/record" \
+      -v "row/source_ip" -o "|" \
+      -v "row/count" -o "|" \
+      -v "row/policy_evaluated/disposition" -o "|" \
+      -v "row/policy_evaluated/spf" -o "|" \
+      -v "row/policy_evaluated/dkim" -o "|" \
+      -v "identifiers/header_from" -n \
+      "$xml_input" 2>/dev/null)
+
+  echo
+}
+
+# Alle Dateien im Verzeichnis verarbeiten
+shopt -s nullglob
+for f in "$REPORT_DIR"/*; do
+  case "$f" in
+    *.xml)
+      parse_xml "$f"
+      ;;
+    *.gz)
+      if command -v gzip >/dev/null 2>&1; then
+        tmp="$(mktemp)"
+        if gzip -cd "$f" > "$tmp"; then
+          parse_xml "$tmp"
+        else
+          echo "Warnung: Konnte $f nicht entpacken."
+        fi
+        rm -f "$tmp"
+      else
+        echo "Warnung: gzip nicht verfügbar, überspringe $f"
+      fi
+      ;;
+    *.zip)
+      if command -v unzip >/dev/null 2>&1; then
+        tmpdir="$(mktemp -d)"
+        if unzip -qq -j "$f" '*.xml' -d "$tmpdir" >/dev/null 2>&1; then
+          for x in "$tmpdir"/*.xml; do
+            [[ -e "$x" ]] || continue
+            parse_xml "$x"
+          done
+        else
+          echo "Warnung: Konnte $f nicht entpacken (oder keine XML darin)."
+        fi
+        rm -rf "$tmpdir"
+      else
+        echo "Warnung: unzip nicht verfügbar, überspringe $f"
+      fi
+      ;;
+    *) : ;;
+  esac
+done
+
+# Zusammenfassung
+unique_ips=${#SEEN_IPS[@]}
+echo "==============================================================================" 
+echo "GESAMT-ZUSAMMENFASSUNG"
+echo "Nachrichten gesamt:         $total_msgs"
+echo "Eindeutige Source-IPs:      $unique_ips"
+echo "Alle Auth PASS:             $pass_msgs"
+echo "SPF/DKIM Fehler gesamt:     $fail_msgs"
+echo "  ├─ nur SPF-Fail:          $spf_only_fail"
+echo "  ├─ nur DKIM-Fail:         $dkim_only_fail"
+echo "  └─ SPF+DKIM-Fail:         $both_fail"
+[[ -n "$WANT_DOMAIN" ]] && echo "Gefilterte Domain:          $WANT_DOMAIN"
+echo "Records-CSV:                $CSV_PATH"
+echo "Hinweis: 'Fail' umfasst Records, bei denen SPF oder DKIM nicht 'pass' war."
+
+# Top-Listen auf STDOUT
+echo
+echo "TOP $TOP_N IPs nach Anzahl (über alle Reports):"
+{
+  for ip in "${!IP_COUNTS[@]}"; do
+    printf "%10d %s\n" "${IP_COUNTS[$ip]}" "$ip"
+  done
+} | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+
+if (( fail_msgs > 0 )); then
+  echo
+  echo "Top-IPs nur SPF-Fail:"
+  { for ip in "${!SPF_ONLY_FAIL_IP[@]}"; do printf "%10d %s\n" "${SPF_ONLY_FAIL_IP[$ip]}" "$ip"; done; } \
+    | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+  echo
+  echo "Top-IPs nur DKIM-Fail:"
+  { for ip in "${!DKIM_ONLY_FAIL_IP[@]}"; do printf "%10d %s\n" "${DKIM_ONLY_FAIL_IP[$ip]}" "$ip"; done; } \
+    | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+  echo
+  echo "Top-IPs SPF+DKIM-Fail:"
+  { for ip in "${!BOTH_FAIL_IP[@]}"; do printf "%10d %s\n" "${BOTH_FAIL_IP[$ip]}" "$ip"; done; } \
+    | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+fi
+
+# ---- CSV-Exporte der Top-Listen ---------------------------------------------
+
+write_top_csv () {
+  local outfile="$1"; shift
+  local -n assoc="$1"   # name reference auf assoziatives Array
+  echo "ip,count" > "$outfile"
+  if [[ "${#assoc[@]}" -eq 0 ]]; then
+    : # leer
+  else
+    for ip in "${!assoc[@]}"; do
+      printf "%s,%s\n" "$ip" "${assoc[$ip]}"
+    done | sort -t, -k2,2nr > "$outfile"
+  fi
+}
+
+# Gesamt-Top-IPs
+write_top_csv "$OUTDIR/top_ips.csv" IP_COUNTS
+
+# Top-Listen nach Fail-Kategorien
+write_top_csv "$OUTDIR/top_spf_fail_ips.csv" SPF_ONLY_FAIL_IP
+write_top_csv "$OUTDIR/top_dkim_fail_ips.csv" DKIM_ONLY_FAIL_IP
+write_top_csv "$OUTDIR/top_both_fail_ips.csv" BOTH_FAIL_IP
+
+echo
+echo "Exportierte Top-CSV-Dateien:"
+echo "  $OUTDIR/top_ips.csv"
+echo "  $OUTDIR/top_spf_fail_ips.csv"
+echo "  $OUTDIR/top_dkim_fail_ips.csv"
+echo "  $OUTDIR/top_both_fail_ips.csv"

DOC/DMARC-Report/dmarc-server-setup.md

@@ -0,0 +1,621 @@
+# DMARC-Server-Sammelsystem – Einrichtung und Betrieb
+
+## 📖 Präambel
+
+Dieses Dokument beschreibt die vollständige Einrichtung eines automatisierten DMARC-Report-Sammelsystems auf einem Linux-Mailserver mit **Postfix**, **Amavis** und **Dovecot (LMTP)**.
+Ziel: DMARC-Aggregatberichte (XML, .gz, .zip) serverseitig empfangen, speichern und regelmäßig auswerten.
+
+---
+
+## 🎯 Ziel
+
+- DMARC-Reports zentral über `dmarc-reports@oopen.de` empfangen.
+- Reports automatisch extrahieren und datumsbasiert speichern.
+- Regelmäßige automatische Auswertung mit `dmarc-scan.sh`.
+- Speicherung der Ergebnisse in CSV-Dateien.
+- Wartungsarm, sicher und robust.
+
+---
+
+## 📁 Verzeichnisstruktur
+
+Alle Dateien werden unter `/var/lib/dmarc` abgelegt:
+
+```
+/var/lib/dmarc/
+├── reports/                 # Eingegangene XML-, GZ-, ZIP-Dateien
+│   └── YYYY/MM/DD/          # Datumsbasierte Ablage
+├── processed/               # Originalmails (Archiv)
+├── exports/                 # CSV- und Top-Auswertungen
+└── logs/                    # Logdateien
+```
+
+Verzeichnisse anlegen:
+
+```bash
+sudo install -d -o vmail -g vmail -m 750 /var/lib/dmarc/{reports,processed,exports,logs}
+sudo install -d -o root -g root -m 750 /usr/local/lib/dmarc
+```
+
+---
+
+## ⚙️ 1. Postfix-Integration
+
+### 1.1 Transport und Master-Konfiguration
+
+In `/etc/postfix/master.cf` **am Ende einfügen:**
+
+```bash
+dmarc-pipe  unix  -  n  n  -  -  pipe
+  flags=Rq user=vmail argv=/usr/local/bin/dmarc-collect.sh
+```
+
+> Passe `user=` an, falls dein Mailbenutzer anders heißt (z. B. `mail` oder `amavis`).
+
+### 1.2 Transportregel definieren
+
+In `/etc/postfix/transport`:
+
+```bash
+dmarc-reports@oopen.de   dmarc-pipe:
+```
+
+Aktivieren:
+
+```bash
+sudo postmap /etc/postfix/transport
+sudo systemctl reload postfix
+```
+
+Damit weiß Postfix, dass Mails an diese Adresse an das Skript weitergegeben werden.
+
+### 1.3 (Optional) Kopie der Mail behalten
+
+Wenn du zusätzlich eine Kopie im IMAP-Postfach haben willst:
+
+In `/etc/postfix/virtual_alias_maps`:
+
+```bash
+dmarc-reports@oopen.de   dmarc-reports-mbox@oopen.de
+```
+
+Dann:
+
+```bash
+sudo postmap btree:/etc/postfix/virtual_alias_maps
+sudo systemctl reload postfix
+```
+
+> **Merke:** `/etc/postfix/transport` = ZustellWEG, `/etc/postfix/virtual_alias_maps` = EmpfängerALIAS.
+> Nur Skript? → Nur `transport`-Eintrag.
+> Skript + Kopie? → `virtual`-Alias **zusätzlich**.
+
+---
+
+## 📨 2. DNS-Einträge (DMARC + External Reporting)
+
+### Beispiel für eine Domain
+
+```dns
+_dmarc.fluechtlingsrat-brandenburg.de.  IN TXT  "v=DMARC1; p=none; rua=mailto:dmarc-reports@oopen.de; ruf=mailto:dmarc-reports@oopen.de; fo=1; aspf=r; adkim=r"
+```
+
+### External Reporting (oopen.de)
+
+Wenn du Berichte für mehrere Domains auf `@oopen.de` empfängst, erlaube externes Reporting:
+
+```dns
+oopen.de._report._dmarc.oopen.de.   IN TXT  "v=DMARC1"
+*.oopen.de._report._dmarc.oopen.de. IN TXT  "v=DMARC1"
+```
+
+---
+
+## 🧰 3. Sammelskript `/usr/local/bin/dmarc-collect.sh`
+
+**Datei anlegen:**
+
+```bash
+sudo tee /usr/local/bin/dmarc-collect.sh >/dev/null <<'EOF'
+#!/usr/bin/env bash
+set -euo pipefail
+
+BASE="/var/lib/dmarc"
+INBOX="$BASE/reports"
+PROC="$BASE/processed"
+LOGF="$BASE/logs/collector.log"
+
+umask 027
+
+TMPDIR="$(mktemp -d)"
+EML="$TMPDIR/mail.eml"
+cat > "$EML"
+
+ripmime --no-nameless --name-by-type --overwrite -i "$EML" -d "$TMPDIR" >>"$LOGF" 2>&1 || true
+
+TODAY="$(date -u +%Y/%m/%d)"
+OUTDIR="$INBOX/$TODAY"
+mkdir -p "$OUTDIR"
+
+moved=0
+shopt -s nullglob
+for f in "$TMPDIR"/*; do
+  case "$f" in
+    *.xml|*.XML|*.gz|*.zip)
+      sha="$(sha256sum "$f" | awk '{print $1}')"
+      base="$(basename "$f")"
+      dst="$OUTDIR/$(date -u +%Y%m%dT%H%M%SZ)_${sha:0:12}_$base"
+      mv "$f" "$dst"
+      echo "$(date -Is) stored $dst" >> "$LOGF"
+      moved=$((moved+1))
+      ;;
+    *) : ;;
+  esac
+done
+
+mkdir -p "$PROC"
+mv "$EML" "$PROC/$(date -u +%Y%m%dT%H%M%SZ)_mail.eml" || true
+rm -rf "$TMPDIR"
+
+if (( moved > 0 )); then
+  exit 0
+else
+  echo "$(date -Is) no usable attachment in message" >> "$LOGF"
+  exit 0
+fi
+
+EOF
+sudo apt install -y ripmime
+sudo chown vmail:vmail /usr/local/bin/dmarc-collect.sh
+sudo chmod 750 /usr/local/bin/dmarc-collect.sh
+```
+
+Inhalt von `dmarc-collect.sh`:
+
+```bash
+#!/usr/bin/env bash
+set -euo pipefail
+
+BASE="/var/lib/dmarc"
+INBOX="$BASE/reports"
+PROC="$BASE/processed"
+LOGF="$BASE/logs/collector.log"
+
+umask 027
+
+TMPDIR="$(mktemp -d)"
+EML="$TMPDIR/mail.eml"
+cat > "$EML"
+
+ripmime --no-nameless --name-by-type --overwrite -i "$EML" -d "$TMPDIR" >>"$LOGF" 2>&1 || true
+
+TODAY="$(date -u +%Y/%m/%d)"
+OUTDIR="$INBOX/$TODAY"
+mkdir -p "$OUTDIR"
+
+moved=0
+shopt -s nullglob
+for f in "$TMPDIR"/*; do
+  case "$f" in
+    *.xml|*.XML|*.gz|*.zip)
+      sha="$(sha256sum "$f" | awk '{print $1}')"
+      base="$(basename "$f")"
+      dst="$OUTDIR/$(date -u +%Y%m%dT%H%M%SZ)_${sha:0:12}_$base"
+      mv "$f" "$dst"
+      echo "$(date -Is) stored $dst" >> "$LOGF"
+      moved=$((moved+1))
+      ;;
+    *) : ;;
+  esac
+done
+
+mkdir -p "$PROC"
+mv "$EML" "$PROC/$(date -u +%Y%m%dT%H%M%SZ)_mail.eml" || true
+rm -rf "$TMPDIR"
+
+if (( moved > 0 )); then
+  exit 0
+else
+  echo "$(date -Is) no usable attachment in message" >> "$LOGF"
+  exit 0
+fi
+```
+
+---
+
+## ⏱️ 4. Automatische tägliche Auswertung
+
+**Datei:** `/usr/local/lib/dmarc/daily-run.sh`
+
+```bash
+sudo tee /usr/local/lib/dmarc/daily-run.sh >/dev/null <<'EOF'
+#!/usr/bin/env bash
+set -euo pipefail
+
+BASE="/var/lib/dmarc"
+TODAY_DIR="$BASE/reports/$(date -u +%Y/%m/%d)"
+OUTDIR="$BASE/exports"
+CSV="$OUTDIR/records.csv"
+LOGF="$BASE/logs/scan-$(date -u +%F).log"
+
+mkdir -p "$OUTDIR"
+
+if [[ -d "$TODAY_DIR" ]]; then
+  /usr/local/bin/dmarc-scan.sh "$TODAY_DIR"     --domain fluechtlingsrat-brandenburg.de     --csv "$CSV" --append     --top 25     --outdir "$OUTDIR"     >> "$LOGF" 2>&1
+fi
+EOF
+sudo chmod 750 /usr/local/lib/dmarc/daily-run.sh
+```
+
+Cronjob anlegen:
+
+```bash
+echo '17 3 * * * root /usr/local/lib/dmarc/daily-run.sh' | sudo tee /etc/cron.d/dmarc-daily >/dev/null
+```
+
+---
+
+## 🧮 5. Auswertungsskript `/usr/local/bin/dmarc-scan.sh`
+
+Installation:
+
+```bash
+sudo apt install -y xmlstarlet unzip gzip
+sudo tee /usr/local/bin/dmarc-scan.sh >/dev/null <<'EOF'
+#!/usr/bin/env bash
+#
+# dmarc-scan.sh — DMARC-XML-Reports (auch .gz/.zip) einlesen, tabellarisch anzeigen,
+#                  Records als CSV exportieren (append optional), Top-IPs ermitteln
+#                  und Top-Listen als CSV schreiben.
+#
+# Nutzung:
+#   ./dmarc-scan.sh /pfad/zu/reports \
+#       [--domain DOMAIN] \
+#       [--csv pfad/zur/records.csv] \
+#       [--append] \
+#       [--top N] \
+#       [--outdir pfad/zum/ordner]
+#
+# Beispiele:
+#   ./dmarc-scan.sh /var/mail/dmarc
+#   ./dmarc-scan.sh /var/mail/dmarc --domain fluechtlingsrat-brandenburg.de --csv dmarc.csv --append --top 15 --outdir ./export
+#
+# Voraussetzungen: xmlstarlet, unzip (für .zip), gzip (für .gz)
+#   Debian/Ubuntu: sudo apt-get install xmlstarlet unzip gzip
+#
+set -euo pipefail
+
+REPORT_DIR="${1:-}"
+shift || true
+
+# Defaults
+WANT_DOMAIN=""
+CSV_PATH="./dmarc-summary.csv"
+APPEND=0
+TOP_N=10
+OUTDIR="."
+
+# Arg-Parsing (einfach)
+while [[ $# -gt 0 ]]; do
+  case "${1:-}" in
+    --domain)
+      WANT_DOMAIN="${2:-}"; shift 2 || true ;;
+    --csv)
+      CSV_PATH="${2:-}"; shift 2 || true ;;
+    --append)
+      APPEND=1; shift || true ;;
+    --top)
+      TOP_N="${2:-10}"; shift 2 || true ;;
+    --outdir)
+      OUTDIR="${2:-.}"; shift 2 || true ;;
+    *)
+      # Unbekannte Option ignorieren
+      shift || true ;;
+  esac
+done
+
+if [[ -z "$REPORT_DIR" || ! -d "$REPORT_DIR" ]]; then
+  echo "Fehler: Bitte ein Verzeichnis mit DMARC-Reports angeben."
+  echo "Beispiel: $0 /var/mail/dmarc --domain fluechtlingsrat-brandenburg.de --csv dmarc.csv --append --top 15 --outdir ./export"
+  exit 1
+fi
+
+if ! command -v xmlstarlet >/dev/null 2>&1; then
+  echo "Fehler: xmlstarlet nicht gefunden. Bitte installieren (z.B. 'sudo apt-get install xmlstarlet')."
+  exit 1
+fi
+
+mkdir -p "$OUTDIR"
+
+# CSV-Header für Records; bei --append nur schreiben, wenn Datei noch nicht existiert
+RECORDS_HEADER="report_org,policy_domain,begin_utc,end_utc,source_ip,count,disposition,spf,dkim,header_from"
+ensure_records_header() {
+  if [[ "$APPEND" -eq 1 ]]; then
+    if [[ ! -f "$CSV_PATH" ]]; then
+      echo "$RECORDS_HEADER" > "$CSV_PATH"
+    fi
+  else
+    echo "$RECORDS_HEADER" > "$CSV_PATH"
+  fi
+}
+ensure_records_header
+
+# Zähler & Sets
+declare -A SEEN_IPS=()
+declare -A IP_COUNTS=()         # Summe pro IP
+declare -A SPF_ONLY_FAIL_IP=()  # nur SPF fail pro IP
+declare -A DKIM_ONLY_FAIL_IP=() # nur DKIM fail pro IP
+declare -A BOTH_FAIL_IP=()      # SPF+DKIM fail pro IP
+
+total_msgs=0
+pass_msgs=0
+fail_msgs=0
+spf_only_fail=0
+dkim_only_fail=0
+both_fail=0
+
+# Hilfsfunktion: Epoch -> Datum (UTC)
+epoch2date() {
+  local e="$1"
+  if [[ -z "$e" ]]; then printf "-"; return; fi
+  date -u -d @"$e" +"%Y-%m-%d %H:%M:%S UTC" 2>/dev/null || printf "%s" "$e"
+}
+
+# CSV-escape (Felder in Anführungszeichen, doppelte Anführungszeichen verdoppeln)
+csv_escape() {
+  local s="${1:-}"
+  s="${s//\"/\"\"}"
+  printf "\"%s\"" "$s"
+}
+
+# Eine einzelne XML-Datei parsen
+parse_xml() {
+  local xml_input="$1"
+
+  # Domain aus policy_published, ggf. für Filter
+  local domain
+  domain=$(xmlstarlet sel -T -t -v "/feedback/policy_published/domain" "$xml_input" 2>/dev/null || true)
+  if [[ -n "$WANT_DOMAIN" && "$domain" != "$WANT_DOMAIN" ]]; then
+    return 0
+  fi
+
+  local org begin end pol sp aspf adkim
+  org=$(xmlstarlet sel -T -t -v "/feedback/report_metadata/org_name" "$xml_input" 2>/dev/null || printf "-")
+  begin=$(xmlstarlet sel -T -t -v "/feedback/report_metadata/date_range/begin" "$xml_input" 2>/dev/null || printf "")
+  end=$(xmlstarlet sel -T -t -v "/feedback/report_metadata/date_range/end" "$xml_input" 2>/dev/null || printf "")
+  pol=$(xmlstarlet sel -T -t -v "/feedback/policy_published/p" "$xml_input" 2>/dev/null || printf "-")
+  sp=$(xmlstarlet sel -T -t -v "/feedback/policy_published/sp" "$xml_input" 2>/dev/null || printf "-")
+  aspf=$(xmlstarlet sel -T -t -v "/feedback/policy_published/aspf" "$xml_input" 2>/dev/null || printf "-")
+  adkim=$(xmlstarlet sel -T -t -v "/feedback/policy_published/adkim" "$xml_input" 2>/dev/null || printf "-")
+
+  # Report-Header
+  echo "=============================================================================="
+  echo "Report von:       ${org}"
+  echo "Domain (Policy):  ${domain}  (p=${pol}, sp=${sp}, aspf=${aspf}, adkim=${adkim})"
+  echo "Zeitraum:         $(epoch2date "$begin")  –  $(epoch2date "$end")"
+  echo "------------------------------------------------------------------------------"
+  printf "%-16s  %7s  %-10s  %-6s  %-6s  %s\n" "Source IP" "Count" "Disposition" "SPF" "DKIM" "Header-From"
+  echo "------------------------------------------------------------------------------"
+
+  # Alle <record>-Einträge tabellarisch ausgeben
+  while IFS='|' read -r ip cnt dispo spfres dkimres hfrom; do
+    [[ -z "$ip$cnt$dispo$spfres$dkimres$hfrom" ]] && continue
+
+    local n=0
+    if [[ -n "${cnt:-}" && "$cnt" =~ ^[0-9]+$ ]]; then n="$cnt"; fi
+
+    total_msgs=$(( total_msgs + n ))
+    [[ -n "$ip" ]] && SEEN_IPS["$ip"]=1
+    [[ -n "$ip" ]] && IP_COUNTS["$ip"]=$(( ${IP_COUNTS["$ip"]:-0} + n ))
+
+    if [[ "${spfres:-}" == "pass" && "${dkimres:-}" == "pass" ]]; then
+      pass_msgs=$(( pass_msgs + n ))
+    else
+      fail_msgs=$(( fail_msgs + n ))
+      if [[ "${spfres:-}" != "pass" && "${dkimres:-}" == "pass" ]]; then
+        spf_only_fail=$(( spf_only_fail + n ))
+        [[ -n "$ip" ]] && SPF_ONLY_FAIL_IP["$ip"]=$(( ${SPF_ONLY_FAIL_IP["$ip"]:-0} + n ))
+      elif [[ "${spfres:-}" == "pass" && "${dkimres:-}" != "pass" ]]; then
+        dkim_only_fail=$(( dkim_only_fail + n ))
+        [[ -n "$ip" ]] && DKIM_ONLY_FAIL_IP["$ip"]=$(( ${DKIM_ONLY_FAIL_IP["$ip"]:-0} + n ))
+      else
+        both_fail=$(( both_fail + n ))
+        [[ -n "$ip" ]] && BOTH_FAIL_IP["$ip"]=$(( ${BOTH_FAIL_IP["$ip"]:-0} + n ))
+      fi
+    fi
+
+    printf "%-16s  %7s  %-10s  %-6s  %-6s  %s\n" "${ip:--}" "${n}" "${dispo:--}" "${spfres:--}" "${dkimres:--}" "${hfrom:--}"
+
+    local begin_human end_human
+    begin_human="$(epoch2date "$begin")"
+    end_human="$(epoch2date "$end")"
+    {
+      csv_escape "$org"; printf ","
+      csv_escape "$domain"; printf ","
+      csv_escape "$begin_human"; printf ","
+      csv_escape "$end_human"; printf ","
+      csv_escape "${ip:-}"; printf ","
+      printf "%s," "$n"
+      csv_escape "${dispo:-}"; printf ","
+      csv_escape "${spfres:-}"; printf ","
+      csv_escape "${dkimres:-}"; printf ","
+      csv_escape "${hfrom:-}"; printf "\n"
+    } >> "$CSV_PATH"
+
+  done < <(xmlstarlet sel -T -t \
+      -m "/feedback/record" \
+      -v "row/source_ip" -o "|" \
+      -v "row/count" -o "|" \
+      -v "row/policy_evaluated/disposition" -o "|" \
+      -v "row/policy_evaluated/spf" -o "|" \
+      -v "row/policy_evaluated/dkim" -o "|" \
+      -v "identifiers/header_from" -n \
+      "$xml_input" 2>/dev/null)
+
+  echo
+}
+
+# Alle Dateien im Verzeichnis verarbeiten
+shopt -s nullglob
+for f in "$REPORT_DIR"/*; do
+  case "$f" in
+    *.xml)
+      parse_xml "$f"
+      ;;
+    *.gz)
+      if command -v gzip >/dev/null 2>&1; then
+        tmp="$(mktemp)"
+        if gzip -cd "$f" > "$tmp"; then
+          parse_xml "$tmp"
+        else
+          echo "Warnung: Konnte $f nicht entpacken."
+        fi
+        rm -f "$tmp"
+      else
+        echo "Warnung: gzip nicht verfügbar, überspringe $f"
+      fi
+      ;;
+    *.zip)
+      if command -v unzip >/dev/null 2>&1; then
+        tmpdir="$(mktemp -d)"
+        if unzip -qq -j "$f" '*.xml' -d "$tmpdir" >/dev/null 2>&1; then
+          for x in "$tmpdir"/*.xml; do
+            [[ -e "$x" ]] || continue
+            parse_xml "$x"
+          done
+        else
+          echo "Warnung: Konnte $f nicht entpacken (oder keine XML darin)."
+        fi
+        rm -rf "$tmpdir"
+      else
+        echo "Warnung: unzip nicht verfügbar, überspringe $f"
+      fi
+      ;;
+    *) : ;;
+  esac
+done
+
+# Zusammenfassung
+unique_ips=${#SEEN_IPS[@]}
+echo "=============================================================================="
+echo "GESAMT-ZUSAMMENFASSUNG"
+echo "Nachrichten gesamt:         $total_msgs"
+echo "Eindeutige Source-IPs:      $unique_ips"
+echo "Alle Auth PASS:             $pass_msgs"
+echo "SPF/DKIM Fehler gesamt:     $fail_msgs"
+echo "  ├─ nur SPF-Fail:          $spf_only_fail"
+echo "  ├─ nur DKIM-Fail:         $dkim_only_fail"
+echo "  └─ SPF+DKIM-Fail:         $both_fail"
+[[ -n "$WANT_DOMAIN" ]] && echo "Gefilterte Domain:          $WANT_DOMAIN"
+echo "Records-CSV:                $CSV_PATH"
+echo "Hinweis: 'Fail' umfasst Records, bei denen SPF oder DKIM nicht 'pass' war."
+
+# Top-Listen auf STDOUT
+echo
+echo "TOP $TOP_N IPs nach Anzahl (über alle Reports):"
+{
+  for ip in "${!IP_COUNTS[@]}"; do
+    printf "%10d %s\n" "${IP_COUNTS[$ip]}" "$ip"
+  done
+} | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+
+if (( fail_msgs > 0 )); then
+  echo
+  echo "Top-IPs nur SPF-Fail:"
+  { for ip in "${!SPF_ONLY_FAIL_IP[@]}"; do printf "%10d %s\n" "${SPF_ONLY_FAIL_IP[$ip]}" "$ip"; done; } \
+    | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+  echo
+  echo "Top-IPs nur DKIM-Fail:"
+  { for ip in "${!DKIM_ONLY_FAIL_IP[@]}"; do printf "%10d %s\n" "${DKIM_ONLY_FAIL_IP[$ip]}" "$ip"; done; } \
+    | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+  echo
+  echo "Top-IPs SPF+DKIM-Fail:"
+  { for ip in "${!BOTH_FAIL_IP[@]}"; do printf "%10d %s\n" "${BOTH_FAIL_IP[$ip]}" "$ip"; done; } \
+    | sort -rn | head -n "$TOP_N" | awk '{printf "  %2d) %-16s  %7s\n", NR, $2, $1}'
+fi
+
+# ---- CSV-Exporte der Top-Listen ---------------------------------------------
+
+write_top_csv () {
+  local outfile="$1"; shift
+  local -n assoc="$1"   # name reference auf assoziatives Array
+  echo "ip,count" > "$outfile"
+  if [[ "${#assoc[@]}" -eq 0 ]]; then
+    : # leer
+  else
+    for ip in "${!assoc[@]}"; do
+      printf "%s,%s\n" "$ip" "${assoc[$ip]}"
+    done | sort -t, -k2,2nr > "$outfile"
+  fi
+}
+
+# Gesamt-Top-IPs
+write_top_csv "$OUTDIR/top_ips.csv" IP_COUNTS
+
+# Top-Listen nach Fail-Kategorien
+write_top_csv "$OUTDIR/top_spf_fail_ips.csv" SPF_ONLY_FAIL_IP
+write_top_csv "$OUTDIR/top_dkim_fail_ips.csv" DKIM_ONLY_FAIL_IP
+write_top_csv "$OUTDIR/top_both_fail_ips.csv" BOTH_FAIL_IP
+
+echo
+echo "Exportierte Top-CSV-Dateien:"
+echo "  $OUTDIR/top_ips.csv"
+echo "  $OUTDIR/top_spf_fail_ips.csv"
+echo "  $OUTDIR/top_dkim_fail_ips.csv"
+echo "  $OUTDIR/top_both_fail_ips.csv"
+
+EOF
+sudo chmod 750 /usr/local/bin/dmarc-scan.sh
+```
+
+Beschreibung: Das Skript liest XML/ZIP/GZ-Reports, zeigt eine Tabelle pro Report, schreibt eine Records-CSV (mit `--append` fortsetzbar) und exportiert Top-Listen als CSV in `--outdir`.
+
+**Wichtige Parameter:**
+
+- `--domain DOMAIN` (Filter)
+- `--csv PFAD` (Records-CSV)
+- `--append` (anhängen statt überschreiben)
+- `--top N` (Top-Liste Größe)
+- `--outdir PFAD` (Top-CSV Ziel)
+
+**Beispiel:**
+
+```bash
+dmarc-scan.sh /var/lib/dmarc/reports/2025/11/12   --domain fluechtlingsrat-brandenburg.de   --csv /var/lib/dmarc/exports/records.csv   --append   --top 25   --outdir /var/lib/dmarc/exports/
+```
+
+---
+
+## 🔁 6. Logrotate
+
+**Datei:** `/etc/logrotate.d/dmarc`
+
+```bash
+/var/lib/dmarc/logs/*.log {
+    weekly
+    rotate 12
+    compress
+    delaycompress
+    missingok
+    notifempty
+    create 640 vmail vmail
+    sharedscripts
+    postrotate
+        systemctl reload postfix >/dev/null 2>&1 || true
+    endscript
+}
+```
+
+---
+
+## ✅ 7. Test
+
+```bash
+sudo -u vmail /usr/local/bin/dmarc-collect.sh < testmail.eml
+```
+
+---
+
+**Autor:** oopen.de / Systemkonfiguration
+**Stand:** November 2025
+**Version:** 1.2

DOC/README.test_mailprotocols

@@ -3,9 +3,15 @@
 ## -          some litle tests            ##
 ## -------------------------------------- ##
 
+## -
 ## - test smtp (STARTTLS), submission (587) (STARTTLS), smtp (SSL),
 ## - pop3 (SSL), pop3 (STARTTLS), imap (SSL) and imap (STARTTLS)
 ## -
+
+# ---
+# test - localhost
+# ---
+
 openssl s_client -crlf -starttls smtp -connect localhost:25 [-state -debug]
 openssl s_client -crlf -starttls smtp -connect localhost:587
 openssl s_client -crlf -connect localhost:465
@@ -15,9 +21,24 @@ openssl s_client -crlf -connect localhost:993
 openssl s_client -crlf -starttls imap -connect localhost:143
 
 
+# ---
+# tests -  remote mailserver
+# ---
+
+mailserver="mx.gemeinschaft-altenschlirf.de"
+
+openssl s_client -crlf -starttls smtp -connect ${mailserver}:25 [-state -debug]
+openssl s_client -crlf -starttls smtp -connect ${mailserver}:587
+openssl s_client -crlf -connect ${mailserver}:465
+openssl s_client -crlf -connect ${mailserver}:995
+openssl s_client -crlf -starttls pop3 -connect ${mailserver}:110
+openssl s_client -crlf -connect ${mailserver}:993
+openssl s_client -crlf -starttls imap -connect ${mailserver}:143
+
+
 # Test RSA based TLS connection
 #
-echo "quit" | openssl s_client -connect a.mx.oopen.de:25 -starttls smtp -tls1_2 -cipher ECDHE-RSA-AES256-GCM-SHA384
+echo "quit" | openssl s_client -connect ${mailserver}:25 -starttls smtp -tls1_2 -cipher ECDHE-RSA-AES256-GCM-SHA384
 
-echo "quit" | openssl s_client -connect a.mx.oopen.de:25 -starttls smtp -tls1_2
+echo "quit" | openssl s_client -connect ${mailserver}:25 -starttls smtp -tls1_2
-echo "quit" | openssl s_client -connect a.mx.oopen.de:25 -starttls smtp
+echo "quit" | openssl s_client -connect ${mailserver}:25 -starttls smtp

DOC/dovecot/README.dovecot.index

@@ -19,3 +19,19 @@ doveadm index -A INBOX
 # -the storage files will be also checked.
 # -
 doveadm force-resync -A INBOX
+
+
+# - Index users .Sent Folder
+# -
+doveadm index -u <user@domain.ltd> .Sent
+
+
+# - oder alternativ und etwas allgemeiner für egal welchen Unterordner
+# - ==================================================================
+# -
+# - Index eines Unterverzeichnisses einer Mailbox löschen
+# -
+# -   z.Bsp. für den 'gesendet' Ordner der Mailbox presse@mbr-berlin.de
+# -
+# -      rm /var/vmail/mbr-berlin.de/presse/Maildir/.Sent/dovecot.index*
+# -      systemctl restart dovecot.service

DOC/dovecot/README.maildir-size-fix.pl

@@ -0,0 +1,61 @@
+# ----------
+# Fix Maildir Size
+#
+#     falls sich die tatsächliche Größe einer E-mail im Maildir Format 
+#     von der Größenangabe im Dateinamen unterscheidet, dann läuft
+#     dovecot auf fehler.
+#
+# Es gibt 2 Möglichekeiten das zu verhindern:
+#
+#     1. in der dovecot.conf (z.Bsp. in 10-mail.conf deb Parameter
+#        'maildir_broken_filename_sizes' auf 'yes' setzen
+#
+#              maildir_broken_filename_sizes = yes
+#
+#
+#     2. Die Größenangaben im Dateinamen korrigieren. Dafür gint es ein Skript
+#        namens 'maildir-size-fix.pl'. Dieses Skript steht bei Githup's
+#        'dovecot/tools' zur Verfügung:
+#
+#              https://github.com/dovecot/tools
+#
+# Das Perl-Skript maildir-size-fix.pl ist ein Werkzeug, das im Dovecot-Projekt 
+# verwendet wird, um Probleme mit der Größe von Maildir-Dateien zu beheben.
+#
+# Nützliche Optionen 
+#
+#     - add_missing_size: Fügt die Größeninformation hinzu, wenn sie fehlt.
+#
+#     - fix_existing_size: Überprüft und korrigiert bestehende Größeninformationen.
+#
+#     - recursive: Scannt das Maildir rekursiv, um auch Unterordner zu berücksichtigen.
+#
+#     - verbose: Ermöglicht detaillierte Protokollierung der Vorgänge.
+#
+#
+# ---------------------------------------------------------------------------------------
+#
+# Jede E.Mail in einem Maildir Ordner ist eine eigene Datei, dess dateiname üblicherweise
+# die Größe der datei selbst enthält (..,S=<dateigrösse>,W=..)
+#
+# ein typische Datei innerhalb eines Maildirordners sieht so aus:
+#
+#     1755713024.M837247P2624513.rage,S=38568,W=39101:2,Sc
+#          |            |          |
+#     Zeitstempel       |       Hostname  
+#                    eind. ID 
+#
+#     S= und ,W=: Dateigröße und "Weighted size" (für IMAP/Quota).
+#
+# wobei die flags folgende bedeitung haben:
+#
+#            +-------+-----------------------------+
+#            | Flag  | Bedeutung                   |
+#            +-------+-----------------------------+
+#            | S     | Seen (gelesen)              |
+#            | R     | Replied (beantwortet)       |
+#            | F     | Flagged (markiert / wichtig)|
+#            | T     | Trashed (zum Löschen mark.) |
+#            | D     | Draft (Entwurf)             |
+#            | P     | Passed (weitergeleitet)     |
+#            +-------+-----------------------------+

install_amavis.sh

@@ -5116,6 +5116,8 @@ while IFS='' read -r _line || [[ -n $_line ]] ; do
 smtp      inet  n       -       y       -       -       smtpd
    -o smtpd_proxy_filter=127.0.0.1:10024
    -o content_filter=
+   -o smtpd_milters=
+   -o non_smtpd_milters=
 EOF
       if [[ "$SASL_AUTH_ENABLED" = "no" ]] ; then
          cat >> $postfix_master_cf << EOF

install_opendkim.sh

@@ -14,6 +14,8 @@ echo -e "\n   \033[32mStart Installation of OpenDKIM..\033[m"
 
 log_file="$(mktemp)"
 
+backup_date="$(date +%Y-%m-%d-%H%M)"
+
 _opendkim_packages="opendkim opendkim-tools"
 
 opendkim_base_dir="/etc/opendkim"
@@ -28,6 +30,7 @@ opendkim_socket_file="${opendkim_socket_dir}/opendkim.sock"
 postfix_needs_restart=false
 opendkim_needs_restart=false
 
+
 # -------------
 # --- Some functions
 # -------------
@@ -175,6 +178,18 @@ else
    echo_skipped
 fi
 
+echononl "   Backup existing file '${opendkim_conf_file}'.."
+if [[ -f "${opendkim_conf_file}" ]] ; then
+   mv "${opendkim_conf_file}" "${opendkim_conf_file}.${backup_date}"
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+else
+   echo_skipped
+fi
 
 # - Create OpenDKIM configuration
 # -
@@ -200,6 +215,7 @@ AuthservID              "DKIM check $(hostname -f)"
 # Modi signer (s) und verifier (v) und verwendet eine
 # Socket-Datei zur Kommunikation (alternativ: lokaler Port)
 Mode                    sv
+
 # Socket                local:/var/run/opendkim/opendkim.sock
 # Socket                local:$opendkim_socket_file
 # Socket                inet:12345@localhost
@@ -492,6 +508,35 @@ milter_protocol = 6
 #
 #smtpd_milters = local:/opendkim/opendkim.sock
 smtpd_milters =
+
+# Was sind non_smtpd_milters?
+#
+# non_smtpd_milters gilt für alle Postfix-Prozesse, die Mails verarbeiten, aber NICHT
+# der smtpd-Daemon sind.
+#
+# Das betrifft z. B.:
+#
+#     cleanup        Header/Content-Bereinigung
+#     qmgr           Queue-Manager
+#     lmtp / smtp    Auslieferung nach extern
+#     local          lokale Zustellung
+#
+# Das sind z. B.:
+#
+#     -  interne Bounces (MAILER-DAEMON)
+#
+#     -  Cron-Mails vom Server
+#
+#     -  Weiterleitungen, die Postfix selbst generiert
+#
+#     -  Mails, die über sendmail CLI gesendet werden
+#
+#     -  Mails, die Amavis über LMTP zurückgibt
+#
+#     -  etc.
+#
+#
+# DKIM soll auch die ausgehenden Mails signieren, die nicht über smtpd daemon versendet werden.
 non_smtpd_milters = local:/opendkim/opendkim.sock
 EOF
    postfix_needs_restart=true
@@ -542,9 +587,14 @@ while IFS='' read -r _line || [[ -n $_line ]] ; do
 
    if $_found && echo "$_line" | grep -i -q -E "^\s*-o\s+smtpd_milters=\s*" ; then
       _found=false
+      if ! echo "$_line" | grep -i -q -E "^\s*-o\s+smtpd_milters=\s*local:/opendkim/opendkim.sock\s*$" ; then
+         echo "   -o smtpd_milters=local:/opendkim/opendkim.sock" >> "$tmp_master_file"
+         _changed=true
+         continue
+      fi
    fi
 
-   if echo "$_line" | grep -i -q -E "^\s*(127.0.0.1|localhost):10025\s+inet\s+" 2> /dev/null ; then
+   if echo "$_line" | grep -i -q -E "^\s*(submission|smtps)\s+inet\s+" 2> /dev/null ; then
       _found=true
    fi
 
@@ -562,7 +612,7 @@ if $_changed ; then
    fi
 else
    echo_skipped
-   warn "Postfix (master.cf) seems already be configured."
+   info "Postfix (master.cf) was not changed - seems already be configured right."
    echononl "   Delete previosly saved file '/etc/postfix/master.cf'.."
    rm /etc/postfix/master.cf.$backup_date 2> $log_file
    if [[ $? -eq 0 ]] ; then

install_opendmarc.sh

@@ -3,6 +3,7 @@
 clear
 echo -e "\n   \033[32mStart Installation of OpenDMARC..\033[m"
 
+overwrite_config_files=true
 
 
 # -------------
@@ -23,13 +24,14 @@ opendmarc_socket_dir="${postfix_spool_dir}/opendmarc"
 opendmarc_socket_file="${opendmarc_socket_dir}/opendmarc.sock"
 
 config_file_name_value_parameters="
-   AuthservID|DMARC check $(hostname -f)
+   AuthservID|$(hostname -f)
+   TrustedAuthservIDs|$(hostname -f)
    PidFile|/run/opendmarc/opendmarc.pid
    RejectFailures|true
    Syslog|true
    SyslogFacility|mail
-   TrustedAuthservIDs|$(hostname -f)
+   IgnoreHosts|${opendmarc_base_dir}/ignore.hosts
-   IgnoreHosts|/etc/opendmarc/ignore.hosts
+   IgnoreMailFrom|${opendmarc_base_dir}/ignore.mailfrom
    IgnoreAuthenticatedClients|true
    RequiredHeaders|false
    UMask|002
@@ -194,6 +196,9 @@ if ! $(grep -q -E "^IgnoreHosts\s+" ${opendmarc_conf_file} 2> /dev/null) ; then
 ## ignored by the filter. If not specified, defaults to "127.0.0.1" only.
 #
 IgnoreHosts 127.0.0.1
+
+# Optional - auch nach Absender-Domain ignorieren:
+IgnoreMailFrom ${opendmarc_base_dir}/ignore.mailfrom
 EOF
    if [[ $? -eq 0 ]] ; then
       echo_ok
@@ -229,6 +234,33 @@ else
 fi
 
 
+# - Add 'TrustedAuthservIDs' with default value to the original opendmarc.conf file
+#
+_param="TrustedAuthservIDs"
+echononl " Add '${_param}' with default value to the opendmarc.conf file.."
+if ! $(grep -q -E "^${_param}\s+" ${opendmarc_conf_file} 2> /dev/null) ; then
+   cat << EOF >> ${opendmarc_conf_file}
+
+# Provides a list of authserv-ids that are to be used to identify Authentication-Results
+# header fields whose contents are to be assumed as valid input for the DMARC assessment.
+# To provide a list, separate values by commas. If the string "HOSTNAME" is provided,
+# the name of the host running the filter (as returned by the gethostname(3) function)
+# will be used. Matching against this list is case-insensitive. The default is to use the
+# value of AuthservID.
+#
+TrustedAuthservIDs OpenDMARC
+EOF
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+else
+   echo_skipped
+fi
+
+
 # - Add 'RequiredHeaders' with default value to the original opendmarc.conf file
 #
 _param="IgnoreAuthenticatedClients"
@@ -472,6 +504,18 @@ else
 fi
 
 
+echononl "   Backup existing file '${opendmarc_base_dir}/ignore.hosts'.."
+if [[ -f "${opendmarc_base_dir}/ignore.hosts" ]] ; then
+   mv "${opendmarc_base_dir}/ignore.hosts" "${opendmarc_base_dir}/ignore.hosts.${backup_date}"
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+else
+   echo_skipped
+fi
 
 # - Create the file ${opendmarc_base_dir}/ignore.hosts
 # -
@@ -480,11 +524,68 @@ if [[ -f "${opendmarc_base_dir}/ignore.hosts" ]] ; then
    echo_skipped
 else
    cat <<EOF > ${opendmarc_base_dir}/ignore.hosts 2> $log_file
-# We are using AmaViS at 'localhost 127.0.0.1 . So we cannot bypass them
+# /etc/opendmarc/ignore.hosts
 #
-# 127.0.0.1
+# Aktuell hat OpenDMARC seinen Milter nur am Dienst
-# localhost
+# 'localhost:10025' hängen. Dort ist der Client
-$(hostname -f)
+# immer 127.0.0.1, nicht die externe Gegenstelle.
+#
+# Deshalb macht es in diesem Setup keinen Sinn,
+# hier IP-Adressen von externen Diensten (CRSend etc.)
+# einzutragen – sie würden nie matchen.
+#
+# WICHTIG:
+#  - KEIN 127.0.0.1
+#  - KEIN localhost
+#  - KEIN ::1
+#
+# Eintrag dieser Adressen würde DMARC komplett deaktivieren.
+#
+# ==> Datei bleibt absichtlich leer.
+EOF
+   opendmarc_needs_restart=true
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+fi
+
+
+# - Create the file ${opendmarc_base_dir}/ignore.hosts
+# -
+
+echononl "   Backup existing file '${opendmarc_base_dir}/ignore.mailfrom'.."
+if [[ -f "${opendmarc_base_dir}/ignore.mailfrom" ]] ; then
+   mv "${opendmarc_base_dir}/ignore.mailfrom" "${opendmarc_base_dir}/ignore.mailfrom.${backup_date}"
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+else
+   echo_skipped
+fi
+
+echononl "   Create file '${opendmarc_base_dir}/ignore.mailfrom'.."
+if [[ -f "${opendmarc_base_dir}/ignore.mailfrom" ]] ; then
+   echo_skipped
+else
+   cat <<EOF > ${opendmarc_base_dir}/ignore.mailfrom 2> $log_file
+# /etc/opendmarc/ignore.mailfrom
+#
+# Hier könnte man Absender-Domains von der DMARC-Prüfung
+# ausnehmen (z. B. problematische Partner-Domains).
+#
+# Aktuell ist das für dein Setup nicht notwendig.
+#
+# Beispiele (NICHT aktiv!):
+#   @example.org
+#   example.org
+#
+# ==> Datei bleibt absichtlich leer.
 EOF
    opendmarc_needs_restart=true
    if [[ $? -eq 0 ]] ; then
@@ -588,6 +689,101 @@ else
 fi
 
 
+echo ""
+
+
+# - Edit /etc/postfix/main.cf and add a section to activate 
+# - processing of e-mail through the OpenDKIM 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 $log_file)"
+fi
+
+echononl "   Activate processing of e-mail through the OpenDKIM daemon.."
+if grep -q -E "milter_default_action\s*=\s*accept" /etc/postfix/main.cf ; then
+   echo_skipped
+   info "Postfix (main.cf) was not changed - seems already be configured right."
+   echononl "   Delete previosly saved Postfix configuration.."
+   rm /etc/postfix/main.cf.$backup_date 2> $log_file
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+else
+   cat <<EOF >> /etc/postfix/main.cf 2> $log_file
+
+# ======= Milter configuration =======
+
+# OpenDKIM
+
+milter_default_action = accept
+
+# Postfix ≥ 2.6 milter_protocol = 6, Postfix ≤ 2.5 milter_protocol = 2
+milter_protocol = 6
+
+# Note:
+#    We will sign AFTER sending through AmaVIS, just befor sending out. So
+#    set 'smtpd_milters =' to an emty string here and add to localhost:10025
+#    section in master.cf: 'smtpd_milters=local:/opendkim/opendkim.sock'
+#
+#    If you want sign mails before sending through AmaVIS, set
+#    'smtpd_milters = local:/opendkim/opendkim.sock' here and add to
+#    localhost:10025 section in master.cf: 'smtpd_milters='
+#
+#smtpd_milters = local:/opendkim/opendkim.sock
+smtpd_milters =
+
+# Was sind non_smtpd_milters?
+#
+# non_smtpd_milters gilt für alle Postfix-Prozesse, die Mails verarbeiten, aber NICHT
+# der smtpd-Daemon sind.
+#
+# Das betrifft z. B.:
+#
+#     cleanup        Header/Content-Bereinigung
+#     qmgr           Queue-Manager
+#     lmtp / smtp    Auslieferung nach extern
+#     local          lokale Zustellung
+#
+# Das sind z. B.:
+#
+#     -  interne Bounces (MAILER-DAEMON)
+#
+#     -  Cron-Mails vom Server
+#
+#     -  Weiterleitungen, die Postfix selbst generiert
+#
+#     -  Mails, die über sendmail CLI gesendet werden
+#
+#     -  Mails, die Amavis über LMTP zurückgibt
+#
+#     -  etc.
+#
+#
+# DKIM soll auch die ausgehenden Mails signieren, die nicht über smtpd daemon versendet werden.
+non_smtpd_milters = local:/opendkim/opendkim.sock
+EOF
+   postfix_needs_restart=true
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+fi
+
+
+echo ""
+
+
 # - Prevent Postfix from setting the DMARC Header twice (one befor
 # - and one after processing amavis
 # -
@@ -613,24 +809,58 @@ else
 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
+_found=false
-   if $(grep -q -E "^\s*-o\s+smtpd_milters\s*=\s*.*$(basename ${opendmarc_socket_file})" /etc/postfix/master.cf); then
+_changed=false
-      echo_skipped
+tmp_master_file="/tmp/postfix_master.cf"
-   else
+> $tmp_master_file
-      perl -i -n -p -e "s&(^\s*-o\s+smtpd_milters\s*=.*)&\1,local:/$(basename "${opendmarc_socket_dir}")/$(basename "${opendmarc_socket_file}")&" \
+while IFS='' read -r _line || [[ -n $_line ]] ; do
-         /etc/postfix/master.cf > $log_file 2>&1
+
+   if $_found && ! echo "$_line" | grep -i -q -E "^\s*-o" 2> /dev/null ; then
+      echo "   -o smtpd_milters=local:/opendmarc/opendmarc.sock" >> "$tmp_master_file"
+      _changed=true
+      _found=false
+   fi
+
+   if $_found && echo "$_line" | grep -i -q -E "^\s*-o\s+smtpd_milters=\s*" ; then
+      _found=false
+      if ! echo "$_line" | grep -i -q -E "^\s*-o\s+smtpd_milters=\s*local:/opendmarc/opendmarc.sock\s*$" ; then
+         echo "   -o smtpd_milters=local:/opendmarc/opendmarc.sock" >> "$tmp_master_file"
+         _changed=true
+         continue
+      fi
+         
+   fi
+
+   if echo "$_line" | grep -i -q -E "^\s*(localhost|127.0.0.1):10025\s+inet\s+" 2> /dev/null ; then
+      _found=true
+   fi
+
+   echo "$_line" >> "$tmp_master_file"
+
+done < "/etc/postfix/master.cf"
+
+if $_changed ; then
+   cp $tmp_master_file /etc/postfix/master.cf 2> $log_file
+   postfix_needs_restart=true
    if [[ $? -eq 0 ]] ; then
       echo_ok
-         postfix_needs_restart=true
    else
       echo_failed
       error "$(cat $log_file)"
    fi
-   fi
 else
    echo_skipped
-   warn "Postfix is not adjusted. Complete Postfix configuration (master.cf) manually\!"
+   info "Postfix (master.cf) was not changed - seems already be configured right."
+   echononl "   Delete previosly saved file '/etc/postfix/master.cf'.."
+   rm /etc/postfix/master.cf.$backup_date 2> $log_file
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
 fi
+rm -f $tmp_master_file
 
 echo ""
 
@@ -698,20 +928,6 @@ else
    echo_skipped
 fi
 
-echo ""
-if [[ -f "/etc/postfix/master.cf.${backup_date}" ]] ; then
-   if  $(diff "/etc/postfix/master.cf" "/etc/postfix/master.cf.${backup_date}"> /dev/null 2>&1) ; then
-         info "File \033[1m/etc/postfix/master.cf\033[m  has not changed.\n\t          Removing previos created backup.."
-         rm "/etc/postfix/master.cf.${backup_date}"
-   fi
-fi
-if [[ -f "/etc/postfix/main.cf.${backup_date}" ]] ; then
-   if  $(diff "/etc/postfix/main.cf" "/etc/postfix/main.cf.${backup_date}"> /dev/null 2>&1) ; then
-         info "File \033[1m/etc/postfix/main.cf\033[m  has not changed.\n\t          Removing previos created backup.."
-         rm "/etc/postfix/main.cf.${backup_date}"
-   fi
-fi
-
 
 echo ""
 rm -f "$log_file"

install_postfix_advanced.sh

@@ -131,6 +131,8 @@ DEFAULT_SASL_AUTH_ENABLED=no
 
 DEFAULT_LISTEN_ON_ADDITIONAL_RELAY_PORT=false
 
+DEFAULT_INSTALL_DMARC_REPORT_SUPPORT=false
+
 
 # - Is this a systemd system?
 # -
@@ -174,6 +176,11 @@ if [[ -z "$_LISTEN_ON_ADDITIONAL_RELAY_PORT" ]] ; then
    _LISTEN_ON_ADDITIONAL_RELAY_PORT=${DEFAULT_LISTEN_ON_ADDITIONAL_RELAY_PORT}
 fi
 
+if [[ -z "$_INSTALL_DMARC_REPORT_SUPPORT" ]] ; then
+   _INSTALL_DMARC_REPORT_SUPPORT=${DEFAULT_INSTALL_DMARC_REPORT_SUPPORT}
+fi
+
+
 echo ""
 echo ""
 echo ""
@@ -443,6 +450,24 @@ else
 fi
 
 
+if ! ${IS_RELAY_HOST} ; then
+   INSTALL_DMARC_REPORT_SUPPORT=false
+   echo ""
+   echo -e "\033[32m--\033[m"
+   echo ""
+   echo "Should this mail server support DMARC reporting?"
+   echo ""
+   echononl "Support DMARC reporting ? [ ${_INSTALL_DMARC_REPORT_SUPPORT} ]: "
+   read INPUT
+   if [[ "X${INPUT}" == "X" ]]; then
+      INPUT=$_INSTALL_DMARC_REPORT_SUPPORT
+   fi
+   if [[ "${INPUT,,}" == "yes" || "${INPUT,,}" == "true" ]]; then
+      INSTALL_DMARC_REPORT_SUPPORT=true
+   fi 
+fi
+
+
 ADMIN_EMAIL=
 echo ""
 echo ""
@@ -492,6 +517,8 @@ if $IS_RELAY_HOST ; then
 else
    echo -e "\tConfigure as relay host?..........: $IS_RELAY_HOST"
    echo -e "\tConfigure as complete mailserver..: \033[33m\033[1mtrue\033[m"
+   echo ""
+   echo -e "\tSupport DMARC reporting...........: \033[33m\033[1m${INSTALL_DMARC_REPORT_SUPPORT}\033[m"
 fi
 echo ""
 echononl "einverstanden (yes/no): "
@@ -535,6 +562,10 @@ EOF
 _ADDITIONAL_RELAY_LISTEN_PORT=${ADDITIONAL_RELAY_LISTEN_PORT}
 EOF
    fi
+else
+   cat << EOF >> $conf_file
+_INSTALL_DMARC_REPORT_SUPPORT=${INSTALL_DMARC_REPORT_SUPPORT}
+EOF
 fi
 if [[ $? -ne 0 ]]; then
    _failed=true
@@ -547,6 +578,9 @@ fi
 
 [[ "$IPV6" = "disabled" ]] && IPV6=""
 
+exit
+clean_up 1
+
 
 # - Synchronise package index files with the repository
 # -
@@ -592,6 +626,9 @@ _needed_packages="postfix postfix-pgsql postfix-mysql postfix-pcre libsasl2-modu
 if [[ "$SASL_AUTH_ENABLED" = "yes" ]]; then
    _needed_packages="$_needed_packages sasl2-bin"
 fi
+if ${INSTALL_DMARC_REPORT_SUPPORT} ; then
+   _needed_packages="$_needed_packages ripmime xmlstarlet unzip gzip"
+fi
 for _pkg in $_needed_packages ; do
    if `dpkg -l | grep $_pkg | grep -e "^i" > /dev/null 2>&1` ; then
       continue
@@ -2387,6 +2424,45 @@ virtual_alias_domains =
    btree:/etc/postfix/virtual_alias_domains
 
 
+#======= Postfix DSN Support ============
+
+# 
+# Use the smtpd_discard_ehlo_keyword_address_maps feature if you wish to allow DSN 
+# requests from trusted clients but not from random strangers
+#
+#     smtpd_discard_ehlo_keyword_address_maps =
+#        cidr:/etc/postfix/esmtp_access
+#
+#     /etc/postfix/esmtp_access:
+#         # Allow DSN requests from local subnet only
+#         192.168.0.0/28      silent-discard
+#         0.0.0.0/0           silent-discard, dsn
+#         ::/0                silent-discard, dsn
+#
+#smtpd_discard_ehlo_keyword_address_maps =
+
+
+# If you want to disallow all use of DSN requests from the network, use the 
+# smtpd_discard_ehlo_keywords feature:
+#
+#    /etc/postfix/main.cf:
+#        smtpd_discard_ehlo_keywords = silent-discard, dsn
+#
+# 
+#
+# A case insensitive list of EHLO keywords (pipelining, starttls, auth, etc.) that 
+# the Postfix SMTP server will not send in the EHLO response to a remote SMTP client.
+#
+#
+#    Notes:
+#
+#        Specify the silent-discard pseudo keyword to prevent this action from being logged.
+#
+#        Use the smtpd_discard_ehlo_keyword_address_maps feature to discard EHLO keywords selectively.
+#
+#smtpd_discard_ehlo_keywords = silent-discard, dsn
+
+
 #======= Rate Limiting ============
 
 # anvil_rate_time_unit (default: 60s)
@@ -2935,21 +3011,45 @@ milter_protocol = 6
 #
 smtpd_milter_maps = cidr:/etc/postfix/smtpd_milter_map
 smtpd_milters =
+# Was sind non_smtpd_milters?
+#
+# non_smtpd_milters gilt für alle Postfix-Prozesse, die Mails verarbeiten, aber NICHT 
+# der smtpd-Daemon sind.
+#
+# Das betrifft z. B.:
+#
+#     cleanup        Header/Content-Bereinigung
+#     qmgr           Queue-Manager
+#     lmtp / smtp    Auslieferung nach extern
+#     local          lokale Zustellung
+#
+# Das sind z. B.:
+#
+#     -  interne Bounces (MAILER-DAEMON)
+#
+#     -  Cron-Mails vom Server
+#
+#     -  Weiterleitungen, die Postfix selbst generiert
+#
+#     -  Mails, die über sendmail CLI gesendet werden
+#
+#     -  Mails, die Amavis über LMTP zurückgibt
+#
+#     -  etc.
+#
+#
 EOF
 fi
+
 if [[ -n "$(which opendkim)" ]] ; then
-   if [[ -n "$(which opendmarc)" ]] ; then
-      cat <<EOF >> /etc/postfix/main.cf
-non_smtpd_milters = local:/opendkim/opendkim.sock,local:/opendmarc/opendmarc.sock
-EOF
-   else
    cat <<EOF >> /etc/postfix/main.cf
+# DKIM soll auch die ausgehenden Mails signieren, die nicht über smtpd daemon versendet werden.
+#
 non_smtpd_milters = local:/opendkim/opendkim.sock
 EOF
-   fi
+else
-elif [[ -n "$(which opendmarc)" ]] ; then
    cat <<EOF >> /etc/postfix/main.cf
-non_smtpd_milters = local:/opendmarc/opendmarc.sock
+non_smtpd_milters =
 EOF
 fi
 
@@ -3372,6 +3472,7 @@ else
 fi
 
 
+
 echononl "   Create file \"relay_domains\""
 if [[ ! -f /etc/postfix/relay_domains ]] ; then
    touch /etc/postfix/relay_domains
@@ -3713,6 +3814,133 @@ EOF
 fi
 
 
+if ${INSTALL_DMARC_REPORT_SUPPORT} ; then
+   # ----
+   # - Add support for DMARC report
+   # ----
+
+   # -   /var/lib/dmarc/
+   # -   ├── reports/                 # Eingegangene XML-, GZ-, ZIP-Dateien
+   # -   │   └── YYYY/MM/DD/          # Datumsbasierte Ablage
+   # -   ├── processed/               # Originalmails (Archiv)
+   # -   ├── exports/                 # CSV- und Top-Auswertungen
+   # -   └── logs/                    # Logdateien
+   echononl "Add directory Structure for collecting and analysing DMARC reports.."
+   install -d -o vmail -g vmail -m 750 /var/lib/dmarc/{reports,processed,exports,logs} > /dev/null 2> $log_file
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+
+   echononl "Add 'dmarc-pipe' entry to $postfix_master_cf .."
+   cat <<EOF >> /etc/postfix/transport 2> $log_file
+
+# - Take care your master.cf file ($postfix_master_cf) contains:
+# - 
+# -    dmarc-pipe  unix  -  n  n  -  -  pipe
+# -      flags=Rq user=vmail argv=/usr/local/bin/dmarc-collect.sh
+# - 
+dmarc-reports@oopen.de   dmarc-pipe:
+
+EOF
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+
+   echononl "Create Postfix lookup table '/etc/postfix/transport'.."
+   postmap btree:/etc/postfix/transport > /dev/null 2> $log_file
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+
+   echononl "Create script '/usr/local/bin/dmarc-collect.sh'.."
+   tee /usr/local/bin/dmarc-collect.sh > /dev/null 2> $log_file <<'EOF'
+#!/usr/bin/env bash
+set -euo pipefail
+
+BASE="/var/lib/dmarc"
+INBOX="$BASE/reports"
+PROC="$BASE/processed"
+LOGF="$BASE/logs/collector.log"
+
+umask 027
+
+TMPDIR="$(mktemp -d)"
+EML="$TMPDIR/mail.eml"
+cat > "$EML"
+
+ripmime --no-nameless --name-by-type --overwrite -i "$EML" -d "$TMPDIR" >>"$LOGF" 2>&1 || true
+
+TODAY="$(date -u +%Y/%m/%d)"
+OUTDIR="$INBOX/$TODAY"
+mkdir -p "$OUTDIR"
+
+moved=0
+shopt -s nullglob
+for f in "$TMPDIR"/*; do
+  case "$f" in
+    *.xml|*.XML|*.gz|*.zip)
+      sha="$(sha256sum "$f" | awk '{print $1}')"
+      base="$(basename "$f")"
+      dst="$OUTDIR/$(date -u +%Y%m%dT%H%M%SZ)_${sha:0:12}_$base"
+      mv "$f" "$dst"
+      echo "$(date -Is) stored $dst" >> "$LOGF"
+      moved=$((moved+1))
+      ;;
+    *) : ;;
+  esac
+done
+
+mkdir -p "$PROC"
+mv "$EML" "$PROC/$(date -u +%Y%m%dT%H%M%SZ)_mail.eml" || true
+rm -rf "$TMPDIR"
+
+if (( moved > 0 )); then
+  exit 0
+else
+  echo "$(date -Is) no usable attachment in message" >> "$LOGF"
+  exit 0
+fi
+
+EOF
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+      error "$(cat $log_file)"
+   fi
+
+   _failed=false
+   echononl "Set permissions for '/usr/local/bin/dmarc-collect.sh'.."
+   chown vmail:vmail /usr/local/bin/dmarc-collect.sh > /dev/null 2> $log_file
+   if [[ $? -ne 0 ]] ; then
+      _failed=true
+   fi
+
+   chmod 750 /usr/local/bin/dmarc-collect.sh  > /dev/null 2>> $log_file
+   if [[ $? -ne 0 ]] ; then
+      _failed=true
+   fi
+
+ 
+  if ${_failed} ; then
+      echo_failed
+      error "$(cat $log_file)"
+   else
+      echo_ok
+   fi
+
+fi
+
+
 ## - /etc/postfix/master.cf
 ## -
 ## - Create Listener for user authenticated smtp connection port 587 (submission)
@@ -3745,6 +3973,12 @@ else
 	policyd_spf_present=false
 fi
 
+if grep -iq -E "^dmarc-pipe\s+" $postfix_master_cf > /dev/null 2>&1 ; then
+   dmarc_pipe_present=true
+else
+   dmarc_pipe_present=false
+fi
+
 _found=false
 echononl "   Create new file \"${postfix_master_cf}\""
 if [[ -f "${postfix_master_cf}.$backup_date" ]]; then
@@ -3855,6 +4089,18 @@ smtp-ipv6-only      unix  -       -       n       -       -       smtp
 EOF
    fi
 
+   # - Add support for DMARC reporting
+   # -
+   if ${INSTALL_DMARC_REPORT_SUPPORT} ; then
+      if ! $(grep -iq -E "^dmarc-pipe\s+" "$postfix_master_cf" 2> /dev/null) ; then
+         cat <<EOF >> $postfix_master_cf
+
+dmarc-pipe  unix  -  n  n  -  -  pipe
+  flags=Rq user=vmail argv=/usr/local/bin/dmarc-collect.sh
+EOF
+      fi
+   fi
+
 	echo_done
 	warn "Please check file \"$postfix_master_cf\" !"
 else