Merge remote-tracking branch 'origin/staging' into nightly

2026-05-16 20:41:55 +00:00 · 2024-07-31 10:35:44 +02:00
parent f7ae2a6162 03fccb28e9
commit 57bc03b878
91 changed files with 3112 additions and 1413 deletions
--- a/data/Dockerfiles/acme/Dockerfile
+++ b/data/Dockerfiles/acme/Dockerfile
@@ -1,8 +1,8 @@
-FROM alpine:3.18
+FROM alpine:3.20
+
+LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"

-LABEL maintainer "The Infrastructure Company GmbH GmbH <info@servercow.de>"

-ARG PIP_BREAK_SYSTEM_PACKAGES=1
 RUN apk upgrade --no-cache \
  && apk add --update --no-cache \
  bash \
@@ -15,9 +15,7 @@ RUN apk upgrade --no-cache \
  tini \
  tzdata \
  python3 \
-  py3-pip \
-  && pip3 install --upgrade pip \
-  && pip3 install acme-tiny
+  acme-tiny --repository=http://dl-cdn.alpinelinux.org/alpine/edge/community/

 COPY acme.sh /srv/acme.sh
 COPY functions.sh /srv/functions.sh
--- a/data/Dockerfiles/acme/acme.sh
+++ b/data/Dockerfiles/acme/acme.sh
@@ -33,6 +33,10 @@ if [[ "${ONLY_MAILCOW_HOSTNAME}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
  ONLY_MAILCOW_HOSTNAME=y
 fi

+if [[ "${AUTODISCOVER_SAN}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
+  AUTODISCOVER_SAN=y
+fi
+
 # Request individual certificate for every domain
 if [[ "${ENABLE_SSL_SNI}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
  ENABLE_SSL_SNI=y
@@ -211,7 +215,11 @@ while true; do
      ADDITIONAL_SAN_ARR+=($i)
    fi
  done
+
+  if [[ ${AUTODISCOVER_SAN} == "y" ]]; then
+  # Fetch certs for autoconfig and autodiscover subdomains
  ADDITIONAL_WC_ARR+=('autodiscover' 'autoconfig')
+  fi

  if [[ ${SKIP_IP_CHECK} != "y" ]]; then
  # Start IP detection
--- a/data/Dockerfiles/backup/Dockerfile
+++ b/data/Dockerfiles/backup/Dockerfile
@@ -1,3 +1,3 @@
-FROM debian:bullseye-slim
+FROM debian:bookworm-slim

 RUN apt update && apt install pigz
--- a/data/Dockerfiles/clamd/Dockerfile
+++ b/data/Dockerfiles/clamd/Dockerfile
@@ -1,6 +1,6 @@
-FROM alpine:3.19
+FROM alpine:3.20

-LABEL maintainer "The Infrastructure Company GmbH GmbH <info@servercow.de>"
+LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"

 RUN apk upgrade --no-cache \
  && apk add --update --no-cache \
--- a/data/Dockerfiles/dockerapi/Dockerfile
+++ b/data/Dockerfiles/dockerapi/Dockerfile
@@ -1,6 +1,6 @@
-FROM alpine:3.19
+FROM alpine:3.20

-LABEL maintainer "The Infrastructure Company GmbH GmbH <info@servercow.de>"
+LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"

 ARG PIP_BREAK_SYSTEM_PACKAGES=1
 WORKDIR /app
--- a/data/Dockerfiles/dockerapi/modules/DockerApi.py
+++ b/data/Dockerfiles/dockerapi/modules/DockerApi.py
@@ -358,8 +358,8 @@ class DockerApi:
        for line in cmd_response.split("\n"):
          if '$2$' in line:
            hash = line.strip()
-            hash_out = re.search('\$2\$.+$', hash).group(0)
-            rspamd_passphrase_hash = re.sub('[^0-9a-zA-Z\$]+', '', hash_out.rstrip())
+            hash_out = re.search(r'\$2\$.+$', hash).group(0)
+            rspamd_passphrase_hash = re.sub(r'[^0-9a-zA-Z\$]+', '', hash_out.rstrip())
            rspamd_password_filename = "/etc/rspamd/override.d/worker-controller-password.inc"
            cmd = '''/bin/echo 'enable_password = "%s";' > %s && cat %s''' % (rspamd_passphrase_hash, rspamd_password_filename, rspamd_password_filename)
            cmd_response = self.exec_cmd_container(container, cmd, user="_rspamd")
--- a/data/Dockerfiles/dovecot/Dockerfile
+++ b/data/Dockerfiles/dovecot/Dockerfile
@@ -1,5 +1,5 @@
-FROM alpine:3.19
-LABEL maintainer "The Infrastructure Company GmbH GmbH <info@servercow.de>"
+FROM alpine:3.20
+LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"

 # renovate: datasource=github-releases depName=tianon/gosu versioning=semver-coerced extractVersion=^(?<version>.*)$
 ARG GOSU_VERSION=1.16
@@ -23,6 +23,7 @@ RUN addgroup -g 5000 vmail \
  envsubst \
  ca-certificates \
  curl \
+  coreutils \
  jq \
  lua \
  lua-cjson \
@@ -65,7 +66,7 @@ RUN addgroup -g 5000 vmail \
  perl-package-stash-xs \
  perl-par-packer \
  perl-parse-recdescent \
-  perl-lockfile-simple --repository=http://dl-cdn.alpinelinux.org/alpine/edge/community/ \
+  perl-lockfile-simple \
  libproc \
  perl-readonly \
  perl-regexp-common \
@@ -107,13 +108,12 @@ RUN addgroup -g 5000 vmail \
  dovecot-pigeonhole-plugin \
  dovecot-pop3d \
  dovecot-fts-solr \
+  dovecot-fts-flatcurve \
  && arch=$(arch | sed s/aarch64/arm64/ | sed s/x86_64/amd64/) \
  && wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$arch" \
  && chmod +x /usr/local/bin/gosu \
  && gosu nobody true

-#RUN cpan LockFile::Simple
-
 COPY trim_logs.sh /usr/local/bin/trim_logs.sh
 COPY clean_q_aged.sh /usr/local/bin/clean_q_aged.sh
 COPY syslog-ng.conf /etc/syslog-ng/syslog-ng.conf
@@ -132,6 +132,7 @@ COPY stop-supervisor.sh /usr/local/sbin/stop-supervisor.sh
 COPY quarantine_notify.py /usr/local/bin/quarantine_notify.py
 COPY quota_notify.py /usr/local/bin/quota_notify.py
 COPY repl_health.sh /usr/local/bin/repl_health.sh
+COPY optimize-fts.sh /usr/local/bin/optimize-fts.sh

 ENTRYPOINT ["/docker-entrypoint.sh"]
 CMD exec /usr/bin/supervisord -c /etc/supervisor/supervisord.conf
--- a/data/Dockerfiles/dovecot/docker-entrypoint.sh
+++ b/data/Dockerfiles/dovecot/docker-entrypoint.sh
@@ -29,6 +29,7 @@ ${REDIS_CMDLINE} SET DOVECOT_REPL_HEALTH 1 > /dev/null
 # Create missing directories
 [[ ! -d /etc/dovecot/sql/ ]] && mkdir -p /etc/dovecot/sql/
 [[ ! -d /etc/dovecot/auth/ ]] && mkdir -p /etc/dovecot/auth/
+[[ ! -d /etc/dovecot/conf.d/ ]] && mkdir -p /etc/dovecot/conf.d/
 [[ ! -d /var/vmail/_garbage ]] && mkdir -p /var/vmail/_garbage
 [[ ! -d /var/vmail/sieve ]] && mkdir -p /var/vmail/sieve
 [[ ! -d /etc/sogo ]] && mkdir -p /etc/sogo
@@ -109,7 +110,14 @@ EOF

 echo -n ${ACL_ANYONE} > /etc/dovecot/acl_anyone

-if [[ "${SKIP_SOLR}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
+if [[ "${FLATCURVE_EXPERIMENTAL}" =~ ^([yY][eE][sS]|[yY]) ]]; then
+echo -e "\e[33mActivating Flatcurve as FTS Backend...\e[0m"
+echo -e "\e[33mDepending on your previous setup a full reindex might be needed... \e[0m"
+echo -e "\e[34mVisit https://docs.mailcow.email/manual-guides/Dovecot/u_e-dovecot-fts/#fts-related-dovecot-commands to learn how to reindex\e[0m"
+echo -n 'quota acl zlib mail_crypt mail_crypt_acl mail_log notify fts fts_flatcurve listescape replication' > /etc/dovecot/mail_plugins
+echo -n 'quota imap_quota imap_acl acl zlib imap_zlib imap_sieve mail_crypt mail_crypt_acl notify mail_log fts fts_flatcurve listescape replication' > /etc/dovecot/mail_plugins_imap
+echo -n 'quota sieve acl zlib mail_crypt mail_crypt_acl fts fts_flatcurve notify listescape replication' > /etc/dovecot/mail_plugins_lmtp
+elif [[ "${SKIP_SOLR}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
 echo -n 'quota acl zlib mail_crypt mail_crypt_acl mail_log notify listescape replication' > /etc/dovecot/mail_plugins
 echo -n 'quota imap_quota imap_acl acl zlib imap_zlib imap_sieve mail_crypt mail_crypt_acl notify listescape replication mail_log' > /etc/dovecot/mail_plugins_imap
 echo -n 'quota sieve acl zlib mail_crypt mail_crypt_acl notify listescape replication' > /etc/dovecot/mail_plugins_lmtp
@@ -128,6 +136,48 @@ user_query = SELECT CONCAT(JSON_UNQUOTE(JSON_VALUE(attributes, '$.mailbox_format
 iterate_query = SELECT username FROM mailbox WHERE active = '1' OR active = '2';
 EOF

+
+# Temporarily set FTS depending on user choice inside mailcow.conf. Will be removed as soon as Solr is dropped
+if [[ "${FLATCURVE_EXPERIMENTAL}" =~ ^([yY][eE][sS]|[yY])$ ]]; then
+cat <<EOF > /etc/dovecot/conf.d/fts.conf
+# Autogenerated by mailcow
+plugin {
+    fts_autoindex = yes
+    fts_autoindex_exclude = \Junk
+    fts_autoindex_exclude2 = \Trash
+    fts = flatcurve
+
+    # These are not flatcurve settings, but required for Dovecot FTS. See
+    # Dovecot FTS Configuration link above for further information.
+    fts_languages = en es de
+    fts_tokenizer_generic = algorithm=simple
+    fts_tokenizers = generic email-address
+
+    # OPTIONAL: Recommended default FTS core configuration
+    fts_filters = normalizer-icu snowball stopwords
+    fts_filters_en = lowercase snowball english-possessive stopwords
+}
+EOF
+elif [[ ! "${SKIP_SOLR}" =~ ^([yY][eE][sS]|[yY])$ ]]; then
+cat <<EOF > /etc/dovecot/conf.d/fts.conf
+# Autogenerated by mailcow
+plugin {
+  fts = solr
+  fts_autoindex = yes
+  fts_autoindex_exclude = \Junk
+  fts_autoindex_exclude2 = \Trash
+  fts_solr = url=http://solr:8983/solr/dovecot-fts/
+
+  fts_tokenizers = generic email-address
+  fts_tokenizer_generic = algorithm=simple
+
+  fts_filters = normalizer-icu snowball stopwords
+  fts_filters_en = lowercase snowball english-possessive stopwords
+}
+EOF
+fi
+
+
 # Migrate old sieve_after file
 [[ -f /etc/dovecot/sieve_after ]] && mv /etc/dovecot/sieve_after /etc/dovecot/global_sieve_after
 # Create global sieve scripts
@@ -218,7 +268,6 @@ mail_replica = tcp:${MAILCOW_REPLICA_IP}:${DOVEADM_REPLICA_PORT}
 EOF
 fi

-
 # 401 is user dovecot
 if [[ ! -s /mail_crypt/ecprivkey.pem || ! -s /mail_crypt/ecpubkey.pem ]]; then
 	openssl ecparam -name prime256v1 -genkey | openssl pkey -out /mail_crypt/ecprivkey.pem
@@ -262,7 +311,8 @@ chmod +x /usr/lib/dovecot/sieve/rspamd-pipe-ham \
  /usr/local/bin/maildir_gc.sh \
  /usr/local/sbin/stop-supervisor.sh \
  /usr/local/bin/quota_notify.py \
-  /usr/local/bin/repl_health.sh
+  /usr/local/bin/repl_health.sh \
+  /usr/local/bin/optimize-fts.sh

 # Prepare environment file for cronjobs
 printenv | sed 's/^\(.*\)$/export \1/g' > /source_env.sh
--- a/data/Dockerfiles/dovecot/optimize-fts.sh
+++ b/data/Dockerfiles/dovecot/optimize-fts.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+if [[ "${SKIP_SOLR}" =~ ^([yY][eE][sS]|[yY])+$ && ! "${FLATCURVE_EXPERIMENTAL}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
+    exit 0
+else
+    doveadm fts optimize -A
+fi
--- a/data/Dockerfiles/dovecot/sa-rules.sh
+++ b/data/Dockerfiles/dovecot/sa-rules.sh
@@ -11,7 +11,7 @@ else
 fi

 # Deploy
-curl --connect-timeout 15 --retry 10 --max-time 30 http://www.spamassassin.heinlein-support.de/$(dig txt 1.4.3.spamassassin.heinlein-support.de +short | tr -d '"' | tr -dc '0-9').tar.gz --output /tmp/sa-rules-heinlein.tar.gz
+curl --connect-timeout 15 --retry 10 --max-time 30 https://www.spamassassin.heinlein-support.de/$(dig txt 1.4.3.spamassassin.heinlein-support.de +short | tr -d '"' | tr -dc '0-9').tar.gz --output /tmp/sa-rules-heinlein.tar.gz
 if gzip -t /tmp/sa-rules-heinlein.tar.gz; then
  tar xfvz /tmp/sa-rules-heinlein.tar.gz -C /tmp/sa-rules-heinlein
  cat /tmp/sa-rules-heinlein/*cf > /etc/rspamd/custom/sa-rules
--- a/data/Dockerfiles/netfilter/Dockerfile
+++ b/data/Dockerfiles/netfilter/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.19
+FROM alpine:3.20
 LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"

 WORKDIR /app
--- a/data/Dockerfiles/netfilter/main.py
+++ b/data/Dockerfiles/netfilter/main.py
@@ -80,16 +80,16 @@ def refreshF2bregex():
  global exit_code
  if not r.get('F2B_REGEX'):
    f2bregex = {}
-    f2bregex[1] = 'mailcow UI: Invalid password for .+ by ([0-9a-f\.:]+)'
-    f2bregex[2] = 'Rspamd UI: Invalid password by ([0-9a-f\.:]+)'
-    f2bregex[3] = 'warning: .*\[([0-9a-f\.:]+)\]: SASL .+ authentication failed: (?!.*Connection lost to authentication server).+'
-    f2bregex[4] = 'warning: non-SMTP command from .*\[([0-9a-f\.:]+)]:.+'
-    f2bregex[5] = 'NOQUEUE: reject: RCPT from \[([0-9a-f\.:]+)].+Protocol error.+'
-    f2bregex[6] = '-login: Disconnected.+ \(auth failed, .+\): user=.*, method=.+, rip=([0-9a-f\.:]+),'
-    f2bregex[7] = '-login: Aborted login.+ \(auth failed .+\): user=.+, rip=([0-9a-f\.:]+), lip.+'
-    f2bregex[8] = '-login: Aborted login.+ \(tried to use disallowed .+\): user=.+, rip=([0-9a-f\.:]+), lip.+'
-    f2bregex[9] = 'SOGo.+ Login from \'([0-9a-f\.:]+)\' for user .+ might not have worked'
-    f2bregex[10] = '([0-9a-f\.:]+) \"GET \/SOGo\/.* HTTP.+\" 403 .+'
+    f2bregex[1] = r'mailcow UI: Invalid password for .+ by ([0-9a-f\.:]+)'
+    f2bregex[2] = r'Rspamd UI: Invalid password by ([0-9a-f\.:]+)'
+    f2bregex[3] = r'warning: .*\[([0-9a-f\.:]+)\]: SASL .+ authentication failed: (?!.*Connection lost to authentication server).+'
+    f2bregex[4] = r'warning: non-SMTP command from .*\[([0-9a-f\.:]+)]:.+'
+    f2bregex[5] = r'NOQUEUE: reject: RCPT from \[([0-9a-f\.:]+)].+Protocol error.+'
+    f2bregex[6] = r'-login: Disconnected.+ \(auth failed, .+\): user=.*, method=.+, rip=([0-9a-f\.:]+),'
+    f2bregex[7] = r'-login: Aborted login.+ \(auth failed .+\): user=.+, rip=([0-9a-f\.:]+), lip.+'
+    f2bregex[8] = r'-login: Aborted login.+ \(tried to use disallowed .+\): user=.+, rip=([0-9a-f\.:]+), lip.+'
+    f2bregex[9] = r'SOGo.+ Login from \'([0-9a-f\.:]+)\' for user .+ might not have worked'
+    f2bregex[10] = r'([0-9a-f\.:]+) \"GET \/SOGo\/.* HTTP.+\" 403 .+'
    r.set('F2B_REGEX', json.dumps(f2bregex, ensure_ascii=False))
  else:
    try:
@@ -114,8 +114,6 @@ def ban(address):
  global lock

  refreshF2boptions()
-  BAN_TIME = int(f2boptions['ban_time'])
-  BAN_TIME_INCREMENT = bool(f2boptions['ban_time_increment'])
  MAX_ATTEMPTS = int(f2boptions['max_attempts'])
  RETRY_WINDOW = int(f2boptions['retry_window'])
  NETBAN_IPV4 = '/' + str(f2boptions['netban_ipv4'])
@@ -150,7 +148,7 @@ def ban(address):

  if bans[net]['attempts'] >= MAX_ATTEMPTS:
    cur_time = int(round(time.time()))
-    NET_BAN_TIME = BAN_TIME if not BAN_TIME_INCREMENT else BAN_TIME * 2 ** bans[net]['ban_counter']
+    NET_BAN_TIME = calcNetBanTime(bans[net]['ban_counter'])
    logger.logCrit('Banning %s for %d minutes' % (net, NET_BAN_TIME / 60 ))
    if type(ip) is ipaddress.IPv4Address and int(f2boptions['manage_external']) != 1:
      with lock:
@@ -277,12 +275,11 @@ def snat6(snat_target):
      tables.snat6(snat_target, os.getenv('IPV6_NETWORK', 'fd4d:6169:6c63:6f77::/64'))

 def autopurge():
+  global f2boptions
+
  while not quit_now:
    time.sleep(10)
    refreshF2boptions()
-    BAN_TIME = int(f2boptions['ban_time'])
-    MAX_BAN_TIME = int(f2boptions['max_ban_time'])
-    BAN_TIME_INCREMENT = bool(f2boptions['ban_time_increment'])
    MAX_ATTEMPTS = int(f2boptions['max_attempts'])
    QUEUE_UNBAN = r.hgetall('F2B_QUEUE_UNBAN')
    if QUEUE_UNBAN:
@@ -290,9 +287,9 @@ def autopurge():
        unban(str(net))
    for net in bans.copy():
      if bans[net]['attempts'] >= MAX_ATTEMPTS:
-        NET_BAN_TIME = BAN_TIME if not BAN_TIME_INCREMENT else BAN_TIME * 2 ** bans[net]['ban_counter']
+        NET_BAN_TIME = calcNetBanTime(bans[net]['ban_counter'])
        TIME_SINCE_LAST_ATTEMPT = time.time() - bans[net]['last_attempt']
-        if TIME_SINCE_LAST_ATTEMPT > NET_BAN_TIME or TIME_SINCE_LAST_ATTEMPT > MAX_BAN_TIME:
+        if TIME_SINCE_LAST_ATTEMPT > NET_BAN_TIME:
          unban(net)

 def mailcowChainOrder():
@@ -306,6 +303,16 @@ def mailcowChainOrder():
      if quit_now: return
      quit_now, exit_code = tables.checkIPv6ChainOrder()

+def calcNetBanTime(ban_counter):
+  global f2boptions
+
+  BAN_TIME = int(f2boptions['ban_time'])
+  MAX_BAN_TIME = int(f2boptions['max_ban_time'])
+  BAN_TIME_INCREMENT = bool(f2boptions['ban_time_increment'])
+  NET_BAN_TIME = BAN_TIME if not BAN_TIME_INCREMENT else BAN_TIME * 2 ** ban_counter
+  NET_BAN_TIME = max([BAN_TIME, min([NET_BAN_TIME, MAX_BAN_TIME])])
+  return NET_BAN_TIME
+
 def isIpNetwork(address):
  try:
    ipaddress.ip_network(address, False)
--- a/data/Dockerfiles/netfilter/modules/Logger.py
+++ b/data/Dockerfiles/netfilter/modules/Logger.py
@@ -13,9 +13,12 @@ class Logger:
    tolog['time'] = int(round(time.time()))
    tolog['priority'] = priority
    tolog['message'] = message
-    if self.r is not None:
-      self.r.lpush('NETFILTER_LOG', json.dumps(tolog, ensure_ascii=False))
    print(message)
+    if self.r is not None:
+      try:
+        self.r.lpush('NETFILTER_LOG', json.dumps(tolog, ensure_ascii=False))
+      except Exception as ex:
+        print('Failed logging to redis: %s'  % (ex))

  def logWarn(self, message):
    self.log('warn', message)
--- a/data/Dockerfiles/netfilter/modules/NFTables.py
+++ b/data/Dockerfiles/netfilter/modules/NFTables.py
@@ -452,6 +452,8 @@ class NFTables:
          continue

        rule = _object["rule"]["expr"][0]["match"]
+        if not "payload" in rule["left"]:
+          continue
        left_opt = rule["left"]["payload"]
        if not left_opt["protocol"] == _family:
          continue
--- a/data/Dockerfiles/olefy/Dockerfile
+++ b/data/Dockerfiles/olefy/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.19
+FROM alpine:3.20
 LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"

 ARG PIP_BREAK_SYSTEM_PACKAGES=1
--- a/data/Dockerfiles/phpfpm/docker-entrypoint.sh
+++ b/data/Dockerfiles/phpfpm/docker-entrypoint.sh
@@ -24,6 +24,7 @@ done
 CONTAINER_ID=
 until [[ ! -z "${CONTAINER_ID}" ]] && [[ "${CONTAINER_ID}" =~ ^[[:alnum:]]*$ ]]; do
  CONTAINER_ID=$(curl --silent --insecure https://dockerapi/containers/json | jq -r ".[] | {name: .Config.Labels[\"com.docker.compose.service\"], project: .Config.Labels[\"com.docker.compose.project\"], id: .Id}" 2> /dev/null | jq -rc "select( .name | tostring | contains(\"mysql-mailcow\")) | select( .project | tostring | contains(\"${COMPOSE_PROJECT_NAME,,}\")) | .id" 2> /dev/null)
+  echo "Could not get mysql-mailcow container id... trying again"
  sleep 2
 done
 echo "MySQL @ ${CONTAINER_ID}"
--- a/data/Dockerfiles/postfix/Dockerfile
+++ b/data/Dockerfiles/postfix/Dockerfile
@@ -1,5 +1,5 @@
-FROM debian:bullseye-slim
-LABEL maintainer "The Infrastructure Company GmbH GmbH <info@servercow.de>"
+FROM debian:bookworm-slim
+LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"

 ARG DEBIAN_FRONTEND=noninteractive
 ENV LC_ALL C
--- a/data/Dockerfiles/postfix/postfix.sh
+++ b/data/Dockerfiles/postfix/postfix.sh
@@ -415,12 +415,6 @@ postscreen_dnsbl_sites = wl.mailspike.net=127.0.0.[18;19;20]*-2
  b.barracudacentral.org=127.0.0.2*7
  bl.mailspike.net=127.0.0.2*5
  bl.mailspike.net=127.0.0.[10;11;12]*4
-  dnsbl.sorbs.net=127.0.0.10*8
-  dnsbl.sorbs.net=127.0.0.5*6
-  dnsbl.sorbs.net=127.0.0.7*3
-  dnsbl.sorbs.net=127.0.0.8*2
-  dnsbl.sorbs.net=127.0.0.6*2
-  dnsbl.sorbs.net=127.0.0.9*2
 EOF
 fi
 DNSBL_CONFIG=$(grep -v '^#' /opt/postfix/conf/dns_blocklists.cf | grep '\S')
--- a/data/Dockerfiles/postfix/syslog-ng-redis_slave.conf
+++ b/data/Dockerfiles/postfix/syslog-ng-redis_slave.conf
@@ -1,4 +1,4 @@
-@version: 3.28
+@version: 3.38
@include "scl.conf"
 options {
  chain_hostnames(off);
--- a/data/Dockerfiles/postfix/syslog-ng.conf
+++ b/data/Dockerfiles/postfix/syslog-ng.conf
@@ -1,4 +1,4 @@
-@version: 3.28
+@version: 3.38
@include "scl.conf"
 options {
  chain_hostnames(off);
--- a/data/Dockerfiles/rspamd/Dockerfile
+++ b/data/Dockerfiles/rspamd/Dockerfile
@@ -1,8 +1,9 @@
-FROM debian:bookworm-slim
+FROM debian:bullseye-slim
 LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"

 ARG DEBIAN_FRONTEND=noninteractive
-ARG CODENAME=bookworm
+ARG RSPAMD_VER=rspamd_3.7.5-2~8c86c1676   
+ARG CODENAME=bullseye
 ENV LC_ALL C

 RUN apt-get update && apt-get install -y --no-install-recommends \
@@ -11,12 +12,15 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
  gnupg2 \
  apt-transport-https \
  dnsutils \
-  netcat-traditional \
-  && apt-key adv --fetch-keys https://rspamd.com/apt-stable/gpg.key \
-  && echo "deb https://rspamd.com/apt-stable/ $CODENAME main" > /etc/apt/sources.list.d/rspamd.list \
-  && apt-get update \
-  && apt-get --no-install-recommends -y install rspamd redis-tools procps nano \
-  && rm -rf /var/lib/apt/lists/* \
+  netcat \
+  wget \
+  redis-tools \ 
+  procps \ 
+  nano \
+  && arch=$(arch | sed s/aarch64/arm64/ | sed s/x86_64/amd64/) \
+  && wget -P /tmp https://rspamd.com/apt-stable/pool/main/r/rspamd/${RSPAMD_VER}~${CODENAME}_${arch}.deb\
+  && apt install -y /tmp/${RSPAMD_VER}~${CODENAME}_${arch}.deb \
+  && rm -rf /var/lib/apt/lists/* /tmp/*\
  && apt-get autoremove --purge \
  && apt-get clean \
  && mkdir -p /run/rspamd \
@@ -25,7 +29,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
  && sed -i 's/#analysis_keyword_table > 0/analysis_cat_table.macro_exist == "M"/g' /usr/share/rspamd/lualib/lua_scanners/oletools.lua

 COPY settings.conf /etc/rspamd/settings.conf
-COPY metadata_exporter.lua /usr/share/rspamd/plugins/metadata_exporter.lua
 COPY set_worker_password.sh /set_worker_password.sh
 COPY docker-entrypoint.sh /docker-entrypoint.sh

--- a/data/Dockerfiles/rspamd/metadata_exporter.lua
+++ b/data/Dockerfiles/rspamd/metadata_exporter.lua
@@ -1,632 +0,0 @@
--[[
-Copyright (c) 2016, Andrew Lewis <nerf@judo.za.org>
-Copyright (c) 2016, Vsevolod Stakhov <vsevolod@highsecure.ru>
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-]]--
-
-if confighelp then
-  return
-end
-
-- A plugin that pushes metadata (or whole messages) to external services
-
-local redis_params
-local lua_util = require "lua_util"
-local rspamd_http = require "rspamd_http"
-local rspamd_util = require "rspamd_util"
-local rspamd_logger = require "rspamd_logger"
-local ucl = require "ucl"
-local E = {}
-local N = 'metadata_exporter'
-
-local settings = {
-  pusher_enabled = {},
-  pusher_format = {},
-  pusher_select = {},
-  mime_type = 'text/plain',
-  defer = false,
-  mail_from = '',
-  mail_to = 'postmaster@localhost',
-  helo = 'rspamd',
-  email_template = [[From: "Rspamd" <$mail_from>
-To: $mail_to
-Subject: Spam alert
-Date: $date
-MIME-Version: 1.0
-Message-ID: <$our_message_id>
-Content-type: text/plain; charset=utf-8
-Content-Transfer-Encoding: 8bit
-
-Authenticated username: $user
-IP: $ip
-Queue ID: $qid
-SMTP FROM: $from
-SMTP RCPT: $rcpt
-MIME From: $header_from
-MIME To: $header_to
-MIME Date: $header_date
-Subject: $header_subject
-Message-ID: $message_id
-Action: $action
-Score: $score
-Symbols: $symbols]],
-}
-
-local function get_general_metadata(task, flatten, no_content)
-  local r = {}
-  local ip = task:get_from_ip()
-  if ip and ip:is_valid() then
-    r.ip = tostring(ip)
-  else
-    r.ip = 'unknown'
-  end
-  r.user = task:get_user() or 'unknown'
-  r.qid = task:get_queue_id() or 'unknown'
-  r.subject = task:get_subject() or 'unknown'
-  r.action = task:get_metric_action('default')
-
-  local s = task:get_metric_score('default')[1]
-  r.score = flatten and string.format('%.2f', s) or s
-
-  local fuzzy = task:get_mempool():get_variable("fuzzy_hashes", "fstrings")
-  if fuzzy and #fuzzy > 0 then
-    local fz = {}
-    for _,h in ipairs(fuzzy) do
-      table.insert(fz, h)
-    end
-    if not flatten then
-      r.fuzzy = fz
-    else
-      r.fuzzy = table.concat(fz, ', ')
-    end
-  else
-    r.fuzzy = 'unknown'
-  end
-
-  local rcpt = task:get_recipients('smtp')
-  if rcpt then
-    local l = {}
-    for _, a in ipairs(rcpt) do
-      table.insert(l, a['addr'])
-    end
-    if not flatten then
-      r.rcpt = l
-    else
-      r.rcpt = table.concat(l, ', ')
-    end
-  else
-    r.rcpt = 'unknown'
-  end
-  local from = task:get_from('smtp')
-  if ((from or E)[1] or E).addr then
-    r.from = from[1].addr
-  else
-    r.from = 'unknown'
-  end
-  local syminf = task:get_symbols_all()
-  if flatten then
-    local l = {}
-    for _, sym in ipairs(syminf) do
-      local txt
-      if sym.options then
-        local topt = table.concat(sym.options, ', ')
-        txt = sym.name .. '(' .. string.format('%.2f', sym.score) .. ')' .. ' [' .. topt .. ']'
-      else
-        txt = sym.name .. '(' .. string.format('%.2f', sym.score) .. ')'
-      end
-      table.insert(l, txt)
-    end
-    r.symbols = table.concat(l, '\n\t')
-  else
-    r.symbols = syminf
-  end
-  local function process_header(name)
-    local hdr = task:get_header_full(name)
-    if hdr then
-      local l = {}
-      for _, h in ipairs(hdr) do
-        table.insert(l, h.decoded)
-      end
-      if not flatten then
-        return l
-      else
-        return table.concat(l, '\n')
-      end
-    else
-      return 'unknown'
-    end
-  end
-  if not no_content then
-    r.header_from = process_header('from')
-    r.header_to = process_header('to')
-    r.header_subject = process_header('subject')
-    r.header_date = process_header('date')
-    r.message_id = task:get_message_id()
-  end
-  return r
-end
-
-local formatters = {
-  default = function(task)
-    return task:get_content(), {}
-  end,
-  email_alert = function(task, rule, extra)
-    local meta = get_general_metadata(task, true)
-    local display_emails = {}
-    local mail_targets = {}
-    meta.mail_from = rule.mail_from or settings.mail_from
-    local mail_rcpt = rule.mail_to or settings.mail_to
-    if type(mail_rcpt) ~= 'table' then
-      table.insert(display_emails, string.format('<%s>', mail_rcpt))
-      table.insert(mail_targets, mail_rcpt)
-    else
-      for _, e in ipairs(mail_rcpt) do
-        table.insert(display_emails, string.format('<%s>', e))
-        table.insert(mail_targets, mail_rcpt)
-      end
-    end
-    if rule.email_alert_sender then
-      local x = task:get_from('smtp')
-      if x and string.len(x[1].addr) > 0 then
-        table.insert(mail_targets, x)
-        table.insert(display_emails, string.format('<%s>', x[1].addr))
-      end
-    end
-    if rule.email_alert_user then
-      local x = task:get_user()
-      if x then
-        table.insert(mail_targets, x)
-        table.insert(display_emails, string.format('<%s>', x))
-      end
-    end
-    if rule.email_alert_recipients then
-      local x = task:get_recipients('smtp')
-      if x then
-        for _, e in ipairs(x) do
-          if string.len(e.addr) > 0 then
-            table.insert(mail_targets, e.addr)
-            table.insert(display_emails, string.format('<%s>', e.addr))
-          end
-        end
-      end
-    end
-    meta.mail_to = table.concat(display_emails, ', ')
-    meta.our_message_id = rspamd_util.random_hex(12) .. '@rspamd'
-    meta.date = rspamd_util.time_to_string(rspamd_util.get_time())
-    return lua_util.template(rule.email_template or settings.email_template, meta), { mail_targets = mail_targets}
-  end,
-  json = function(task)
-    return ucl.to_format(get_general_metadata(task), 'json-compact')
-  end
-}
-
-local function is_spam(action)
-  return (action == 'reject' or action == 'add header' or action == 'rewrite subject')
-end
-
-local selectors = {
-  default = function(task)
-    return true
-  end,
-  is_spam = function(task)
-    local action = task:get_metric_action('default')
-    return is_spam(action)
-  end,
-  is_spam_authed = function(task)
-    if not task:get_user() then
-      return false
-    end
-    local action = task:get_metric_action('default')
-    return is_spam(action)
-  end,
-  is_reject = function(task)
-    local action = task:get_metric_action('default')
-    return (action == 'reject')
-  end,
-  is_reject_authed = function(task)
-    if not task:get_user() then
-      return false
-    end
-    local action = task:get_metric_action('default')
-    return (action == 'reject')
-  end,
-}
-
-local function maybe_defer(task, rule)
-  if rule.defer then
-    rspamd_logger.warnx(task, 'deferring message')
-    task:set_pre_result('soft reject', 'deferred', N)
-  end
-end
-
-local pushers = {
-  redis_pubsub = function(task, formatted, rule)
-    local _,ret,upstream
-    local function redis_pub_cb(err)
-      if err then
-        rspamd_logger.errx(task, 'got error %s when publishing on server %s',
-            err, upstream:get_addr())
-        return maybe_defer(task, rule)
-      end
-      return true
-    end
-    ret,_,upstream = rspamd_redis_make_request(task,
-      redis_params, -- connect params
-      nil, -- hash key
-      true, -- is write
-      redis_pub_cb, --callback
-      'PUBLISH', -- command
-      {rule.channel, formatted} -- arguments
-    )
-    if not ret then
-      rspamd_logger.errx(task, 'error connecting to redis')
-      maybe_defer(task, rule)
-    end
-  end,
-  http = function(task, formatted, rule)
-    local function http_callback(err, code)
-      if err then
-        rspamd_logger.errx(task, 'got error %s in http callback', err)
-        return maybe_defer(task, rule)
-      end
-      if code ~= 200 then
-        rspamd_logger.errx(task, 'got unexpected http status: %s', code)
-        return maybe_defer(task, rule)
-      end
-      return true
-    end
-    local hdrs = {}
-    if rule.meta_headers then
-      local gm = get_general_metadata(task, false, true)
-      local pfx = rule.meta_header_prefix or 'X-Rspamd-'
-      for k, v in pairs(gm) do
-        if type(v) == 'table' then
-          hdrs[pfx .. k] = ucl.to_format(v, 'json-compact')
-        else
-          hdrs[pfx .. k] = v
-        end
-      end
-    end
-    rspamd_http.request({
-      task=task,
-      url=rule.url,
-      body=formatted,
-      callback=http_callback,
-      mime_type=rule.mime_type or settings.mime_type,
-      headers=hdrs,
-    })
-  end,
-  send_mail = function(task, formatted, rule, extra)
-    local lua_smtp = require "lua_smtp"
-    local function sendmail_cb(ret, err)
-      if not ret then
-        rspamd_logger.errx(task, 'SMTP export error: %s', err)
-        maybe_defer(task, rule)
-      end
-    end
-
-    lua_smtp.sendmail({
-      task = task,
-      host = rule.smtp,
-      port = rule.smtp_port or settings.smtp_port or 25,
-      from = rule.mail_from or settings.mail_from,
-      recipients = extra.mail_targets or rule.mail_to or settings.mail_to,
-      helo = rule.helo or settings.helo,
-      timeout = rule.timeout or settings.timeout,
-    }, formatted, sendmail_cb)
-  end,
-}
-
-local opts = rspamd_config:get_all_opt(N)
-if not opts then return end
-local process_settings = {
-  select = function(val)
-    selectors.custom = assert(load(val))()
-  end,
-  format = function(val)
-    formatters.custom = assert(load(val))()
-  end,
-  push = function(val)
-    pushers.custom = assert(load(val))()
-  end,
-  custom_push = function(val)
-    if type(val) == 'table' then
-      for k, v in pairs(val) do
-        pushers[k] = assert(load(v))()
-      end
-    end
-  end,
-  custom_select = function(val)
-    if type(val) == 'table' then
-      for k, v in pairs(val) do
-        selectors[k] = assert(load(v))()
-      end
-    end
-  end,
-  custom_format = function(val)
-    if type(val) == 'table' then
-      for k, v in pairs(val) do
-        formatters[k] = assert(load(v))()
-      end
-    end
-  end,
-  pusher_enabled = function(val)
-    if type(val) == 'string' then
-      if pushers[val] then
-        settings.pusher_enabled[val] = true
-      else
-        rspamd_logger.errx(rspamd_config, 'Pusher type: %s is invalid', val)
-      end
-    elseif type(val) == 'table' then
-      for _, v in ipairs(val) do
-        if pushers[v] then
-          settings.pusher_enabled[v] = true
-        else
-          rspamd_logger.errx(rspamd_config, 'Pusher type: %s is invalid', val)
-        end
-      end
-    end
-  end,
-}
-for k, v in pairs(opts) do
-  local f = process_settings[k]
-  if f then
-    f(opts[k])
-  else
-    settings[k] = v
-  end
-end
-if type(settings.rules) ~= 'table' then
-  -- Legacy config
-  settings.rules = {}
-  if not next(settings.pusher_enabled) then
-    if pushers.custom then
-      rspamd_logger.infox(rspamd_config, 'Custom pusher implicitly enabled')
-      settings.pusher_enabled.custom = true
-    else
-      -- Check legacy options
-      if settings.url then
-        rspamd_logger.warnx(rspamd_config, 'HTTP pusher implicitly enabled')
-        settings.pusher_enabled.http = true
-      end
-      if settings.channel then
-        rspamd_logger.warnx(rspamd_config, 'Redis Pubsub pusher implicitly enabled')
-        settings.pusher_enabled.redis_pubsub = true
-      end
-      if settings.smtp and settings.mail_to then
-        rspamd_logger.warnx(rspamd_config, 'SMTP pusher implicitly enabled')
-        settings.pusher_enabled.send_mail = true
-      end
-    end
-  end
-  if not next(settings.pusher_enabled) then
-    rspamd_logger.errx(rspamd_config, 'No push backend enabled')
-    return
-  end
-  if settings.formatter then
-    settings.format = formatters[settings.formatter]
-    if not settings.format then
-      rspamd_logger.errx(rspamd_config, 'No such formatter: %s', settings.formatter)
-      return
-    end
-  end
-  if settings.selector then
-    settings.select = selectors[settings.selector]
-    if not settings.select then
-      rspamd_logger.errx(rspamd_config, 'No such selector: %s', settings.selector)
-      return
-    end
-  end
-  for k in pairs(settings.pusher_enabled) do
-    local formatter = settings.pusher_format[k]
-    local selector = settings.pusher_select[k]
-    if not formatter then
-      settings.pusher_format[k] = settings.formatter or 'default'
-      rspamd_logger.infox(rspamd_config, 'Using default formatter for %s pusher', k)
-    else
-      if not formatters[formatter] then
-        rspamd_logger.errx(rspamd_config, 'No such formatter: %s - disabling %s', formatter, k)
-        settings.pusher_enabled.k = nil
-      end
-    end
-    if not selector then
-      settings.pusher_select[k] = settings.selector or 'default'
-      rspamd_logger.infox(rspamd_config, 'Using default selector for %s pusher', k)
-    else
-      if not selectors[selector] then
-        rspamd_logger.errx(rspamd_config, 'No such selector: %s - disabling %s', selector, k)
-        settings.pusher_enabled.k = nil
-      end
-    end
-  end
-  if settings.pusher_enabled.redis_pubsub then
-    redis_params = rspamd_parse_redis_server(N)
-    if not redis_params then
-      rspamd_logger.errx(rspamd_config, 'No redis servers are specified')
-      settings.pusher_enabled.redis_pubsub = nil
-    else
-      local r = {}
-      r.backend = 'redis_pubsub'
-      r.channel = settings.channel
-      r.defer = settings.defer
-      r.selector = settings.pusher_select.redis_pubsub
-      r.formatter = settings.pusher_format.redis_pubsub
-      settings.rules[r.backend:upper()] = r
-    end
-  end
-  if settings.pusher_enabled.http then
-    if not settings.url then
-      rspamd_logger.errx(rspamd_config, 'No URL is specified')
-      settings.pusher_enabled.http = nil
-    else
-      local r = {}
-      r.backend = 'http'
-      r.url = settings.url
-      r.mime_type = settings.mime_type
-      r.defer = settings.defer
-      r.selector = settings.pusher_select.http
-      r.formatter = settings.pusher_format.http
-      settings.rules[r.backend:upper()] = r
-    end
-  end
-  if settings.pusher_enabled.send_mail then
-    if not (settings.mail_to and settings.smtp) then
-      rspamd_logger.errx(rspamd_config, 'No mail_to and/or smtp setting is specified')
-      settings.pusher_enabled.send_mail = nil
-    else
-      local r = {}
-      r.backend = 'send_mail'
-      r.mail_to = settings.mail_to
-      r.mail_from = settings.mail_from
-      r.helo = settings.hello
-      r.smtp = settings.smtp
-      r.smtp_port = settings.smtp_port
-      r.email_template = settings.email_template
-      r.defer = settings.defer
-      r.selector = settings.pusher_select.send_mail
-      r.formatter = settings.pusher_format.send_mail
-      settings.rules[r.backend:upper()] = r
-    end
-  end
-  if not next(settings.pusher_enabled) then
-    rspamd_logger.errx(rspamd_config, 'No push backend enabled')
-    return
-  end
-elseif not next(settings.rules) then
-  lua_util.debugm(N, rspamd_config, 'No rules enabled')
-  return
-end
-if not settings.rules or not next(settings.rules) then
-  rspamd_logger.errx(rspamd_config, 'No rules enabled')
-  return
-end
-local backend_required_elements = {
-  http = {
-    'url',
-  },
-  smtp = {
-    'mail_to',
-    'smtp',
-  },
-  redis_pubsub = {
-    'channel',
-  },
-}
-local check_element = {
-  selector = function(k, v)
-    if not selectors[v] then
-      rspamd_logger.errx(rspamd_config, 'Rule %s has invalid selector %s', k, v)
-      return false
-    else
-      return true
-    end
-  end,
-  formatter = function(k, v)
-    if not formatters[v] then
-      rspamd_logger.errx(rspamd_config, 'Rule %s has invalid formatter %s', k, v)
-      return false
-    else
-      return true
-    end
-  end,
-}
-local backend_check = {
-  default = function(k, rule)
-    local reqset = backend_required_elements[rule.backend]
-    if reqset then
-      for _, e in ipairs(reqset) do
-        if not rule[e] then
-          rspamd_logger.errx(rspamd_config, 'Rule %s misses required setting %s', k, e)
-          settings.rules[k] = nil
-        end
-      end
-    end
-    for sett, v in pairs(rule) do
-      local f = check_element[sett]
-      if f then
-        if not f(sett, v) then
-          settings.rules[k] = nil
-        end
-      end
-    end
-  end,
-}
-backend_check.redis_pubsub = function(k, rule)
-  if not redis_params then
-    redis_params = rspamd_parse_redis_server(N)
-  end
-  if not redis_params then
-    rspamd_logger.errx(rspamd_config, 'No redis servers are specified')
-    settings.rules[k] = nil
-  else
-    backend_check.default(k, rule)
-  end
-end
-setmetatable(backend_check, {
-  __index = function()
-    return backend_check.default
-  end,
-})
-for k, v in pairs(settings.rules) do
-  if type(v) == 'table' then
-    local backend = v.backend
-    if not backend then
-      rspamd_logger.errx(rspamd_config, 'Rule %s has no backend', k)
-      settings.rules[k] = nil
-    elseif not pushers[backend] then
-      rspamd_logger.errx(rspamd_config, 'Rule %s has invalid backend %s', k, backend)
-      settings.rules[k] = nil
-    else
-      local f = backend_check[backend]
-      f(k, v)
-    end
-  else
-    rspamd_logger.errx(rspamd_config, 'Rule %s has bad type: %s', k, type(v))
-    settings.rules[k] = nil
-  end
-end
-
-local function gen_exporter(rule)
-  return function (task)
-    if task:has_flag('skip') then return end
-    local selector = rule.selector or 'default'
-    local selected = selectors[selector](task)
-    if selected then
-      lua_util.debugm(N, task, 'Message selected for processing')
-      local formatter = rule.formatter or 'default'
-      local formatted, extra = formatters[formatter](task, rule)
-      if formatted then
-        pushers[rule.backend](task, formatted, rule, extra)
-      else
-        lua_util.debugm(N, task, 'Formatter [%s] returned non-truthy value [%s]', formatter, formatted)
-      end
-    else
-      lua_util.debugm(N, task, 'Selector [%s] returned non-truthy value [%s]', selector, selected)
-    end
-  end
-end
-
-if not next(settings.rules) then
-  rspamd_logger.errx(rspamd_config, 'No rules enabled')
-  lua_util.disable_module(N, "config")
-end
-for k, r in pairs(settings.rules) do
-  rspamd_config:register_symbol({
-    name = 'EXPORT_METADATA_' .. k,
-    type = 'idempotent',
-    callback = gen_exporter(r),
-    priority = 10,
-    flags = 'empty,explicit_disable,ignore_passthrough',
-  })
-end
--- a/data/Dockerfiles/sogo/Dockerfile
+++ b/data/Dockerfiles/sogo/Dockerfile
@@ -1,5 +1,5 @@
 FROM debian:bullseye-slim
-LABEL maintainer "The Infrastructure Company GmbH GmbH <info@servercow.de>"
+LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"

 ARG DEBIAN_FRONTEND=noninteractive
 ARG DEBIAN_VERSION=bullseye
--- a/data/Dockerfiles/solr/solr.sh
+++ b/data/Dockerfiles/solr/solr.sh
@@ -1,7 +1,15 @@
 #!/bin/bash

-if [[ "${SKIP_SOLR}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
+if [[ "${FLATCURVE_EXPERIMENTAL}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
+  echo "FLATCURVE_EXPERIMENTAL=y, skipping Solr but enabling Flatcurve as FTS for Dovecot!"
+  echo "Solr will be removed in the future!"
+  sleep 365d
+  exit 0
+elif [[ "${SKIP_SOLR}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
  echo "SKIP_SOLR=y, skipping Solr..."
+  echo "HINT: You could try the newer FTS Backend Flatcurve, which is currently in experimental state..."
+  echo "Simply set FLATCURVE_EXPERIMENTAL=y inside your mailcow.conf and restart the stack afterwards!"
+  echo "Solr will be removed in the future!"
  sleep 365d
  exit 0
 fi
@@ -57,5 +65,11 @@ if [[ "${1}" == "--bootstrap" ]]; then
  exit 0
 fi

+echo "Starting up Solr..."
+echo -e "\e[31mSolr is deprecated! You can try the new FTS System now by enabling FLATCURVE_EXPERIMENTAL=y inside mailcow.conf and restarting the stack\e[0m"
+echo -e "\e[31mSolr will be removed completely soon!\e[0m"
+
+sleep 15
+
 exec gosu solr solr-foreground

--- a/data/Dockerfiles/unbound/Dockerfile
+++ b/data/Dockerfiles/unbound/Dockerfile
@@ -1,11 +1,10 @@
-FROM alpine:3.18
+FROM alpine:3.20

-LABEL maintainer "The Infrastructure Company GmbH GmbH <info@servercow.de>"
+LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"

 RUN apk add --update --no-cache \
 	curl \
 	bind-tools \
-	netcat-openbsd \
 	unbound \
 	bash \
 	openssl \
@@ -20,7 +19,7 @@ EXPOSE 53/udp 53/tcp

 COPY docker-entrypoint.sh /docker-entrypoint.sh

-# healthcheck (dig, ping, nc)
+# healthcheck (dig, ping)
 COPY healthcheck.sh /healthcheck.sh
 RUN chmod +x /healthcheck.sh
 HEALTHCHECK --interval=30s --timeout=30s CMD [ "/healthcheck.sh" ]
--- a/data/Dockerfiles/unbound/healthcheck.sh
+++ b/data/Dockerfiles/unbound/healthcheck.sh
@@ -5,9 +5,13 @@ if [[ "${SKIP_UNBOUND_HEALTHCHECK}" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
    SKIP_UNBOUND_HEALTHCHECK=y
 fi

+# Reset logfile
+echo "$(date +"%Y-%m-%d %H:%M:%S"): Starting health check - logs can be found in /var/log/healthcheck.log"
+echo "$(date +"%Y-%m-%d %H:%M:%S"): Starting health check" > /var/log/healthcheck.log
+
 # Declare log function for logfile inside container
 function log_to_file() {
-    echo "$(date +"%Y-%m-%d %H:%M:%S"): $1" > /var/log/healthcheck.log
+    echo "$(date +"%Y-%m-%d %H:%M:%S"): $1" >> /var/log/healthcheck.log
 }

 # General Ping function to check general pingability
@@ -50,27 +54,6 @@ function check_dns() {
    
 }

-# Simple Netcat Check to connect to common webports
-function check_netcat() {
-    declare -a domains=("mailcow.email" "github.com" "hub.docker.com")
-    declare -a ports=("80" "443")
-
-    for domain in "${domains[@]}" ; do
-        for port in "${ports[@]}" ; do
-            nc -z -w 2 $domain $port
-            if [ $? -ne 0 ]; then
-                log_to_file "Healthcheck: Could not reach $domain on Port $port... Gave up!"
-                log_to_file "Please check your internet connection or firewall rules to fix this error."
-                return 1
-            fi
-        done
-    done
-
-    log_to_file "Healthcheck: Netcat Checks WORKING properly!"
-    return 0
-
-}
-
 if [[ ${SKIP_UNBOUND_HEALTHCHECK} == "y" ]]; then
    log_to_file "Healthcheck: ALL CHECKS WERE SKIPPED! Unbound is healthy!"
    exit 0
@@ -89,11 +72,5 @@ if [ $? -ne 0 ]; then
    exit 1
 fi

-check_netcat
-
-if [ $? -ne 0 ]; then
-    exit 1
-fi
-
 log_to_file "Healthcheck: ALL CHECKS WERE SUCCESSFUL! Unbound is healthy!"
 exit 0
--- a/data/Dockerfiles/watchdog/Dockerfile
+++ b/data/Dockerfiles/watchdog/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18
+FROM alpine:3.20
 LABEL maintainer "The Infrastructure Company GmbH <info@servercow.de>"

 # Installation