#!/usr/bin/env bash working_dir="$(dirname $(realpath $0))" conf_file="${working_dir}/conf//install_postfix_advanced.conf" _TLS_CERT_DIR=/etc/postfix/ssl _TLS_CERT_FILE="${_TLS_CERT_DIR}/mailserver.crt" _TLS_KEY_FILE="${_TLS_CERT_DIR}/mailserver.key" _TLS_CA_FILE=/etc/ssl/certs/ca-certificates.crt postfix_master_cf="/etc/postfix/master.cf" postfix_spool_dir="/var/spool/postfix" postgrey_socket_dir="${postfix_spool_dir}/postgrey" postgrey_socket_file="${postgrey_socket_dir}/postgrey.sock" tmp_err_msg=$(mktemp) backup_date="$(date +%Y-%m-%d-%H%M)" # ------------- # --- Some functions # ------------- clean_up() { # Perform program exit housekeeping rm -f $tmp_err_msg exit $1 } echononl(){ echo X\\c > /tmp/shprompt$$ if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then echo -e -n "$*\\c" 1>&2 else echo -e -n "$*" 1>&2 fi rm /tmp/shprompt$$ } fatal(){ echo "" echo -e "fatal error: $*" echo "" echo -e "\t\033[31m\033[1mInstalllation will be interrupted\033[m\033[m" echo "" clean_up 1 } error(){ echo "" echo -e "\t[ \033[31m\033[1mFehler\033[m ]: $*" echo "" } warn (){ echo "" echo -e "\t[ \033[33m\033[1mWarning\033[m ]: $*" echo "" } info (){ echo "" echo -e "\t[ \033[32m\033[1mInfo\033[m ]: $*" echo "" } echo_done() { echo -e "\033[80G[ \033[32mdone\033[m ]" } echo_ok() { echo -e "\033[80G[ \033[32mok\033[m ]" } echo_warning() { echo -e "\033[80G[ \033[33m\033[1mwarn\033[m ]" } echo_failed(){ echo -e "\033[80G[ \033[1;31mfailed\033[m ]" } echo_skipped() { echo -e "\033[80G[ \033[33m\033[1mskipped\033[m ]" } detect_os_1 () { if $(which lsb_release > /dev/null 2>&1) ; then os_dist="$(lsb_release -i | awk '{print tolower($3)}')" os_version="$(lsb_release -r | awk '{print tolower($2)}')" os_codename="$(lsb_release -c | awk '{print tolower($2)}')" if [[ "$os_dist" = "debian" ]]; then if $(echo "$os_version" | grep -q '\.') ; then os_version=$(echo "$os_version" | cut --delimiter='.' -f1) fi fi elif [[ -e "/etc/os-release" ]]; then . /etc/os-release os_dist=$ID os_version=${VERSION_ID} fi # remove whitespace from os_dist and os_version os_dist="${os_dist// /}" os_version="${os_version// /}" } trap clean_up SIGHUP SIGINT SIGTERM # ------------- # --- Some default settings # ------------- DEFAULT_ADMIN_EMAIL="argus@oopen.de" # - Is this a systemd system? # - if [[ "X`which systemd`" = "X" ]]; then systemd_exists=false else systemd_exists=true fi echo "" # - Detect OS - Set variable # - os_dist # - os_version # - os_codename # - detect_os_1 # - Default Values # - #_IS_RELAY_HOST=false # - Read Configuration File if exists # - if [[ -f "$conf_file" ]]; then source $conf_file fi [[ -z "$_ADMIN_EMAIL" ]] && _ADMIN_EMAIL="$DEFAULT_ADMIN_EMAIL" # ------------- # --- Set default values for some non existent variables (i.e. no configuration file is present) # ------------- if [[ -z "$_HOSTNAME" ]] ; then _HOSTNAME="$(hostname -f)" _HOSTNAME_SHORT="$(hostname)" [[ "$_HOSTNAME" = "$_HOSTNAME_SHORT" ]] && _HOSTNAME="" fi clear echo -e "\033[21G\033[32mInstallation script for Postfix basic mailsystem \033[m" echo HOSTNAME= echo "" echo -e "\033[32m--\033[m" echo "" echo "Insert hostname" echo "" if [[ -n "$_HOSTNAME" ]]; then echononl "hostname [${_HOSTNAME}]: " read HOSTNAME if [[ "X${HOSTNAME}" = "X" ]]; then HOSTNAME=$_HOSTNAME fi else while [[ "X${HOSTNAME}" = "X" ]]; do echononl "hostname: " read HOSTNAME if [[ "X${HOSTNAME}" = "X" ]]; then echo -e "\n\t\033[33m\033[1mHostname is reqired\033[m\n" fi done fi # ------------- # --- Some further default values depending on Hostname # ------------- # - Set default values for ipv4- and ipv6-address # - if [[ -z $_IPV4 ]] && [[ -n "$_HOSTNAME" ]] && [[ -x "$(which dig)" ]]; then _IPV4="$(dig +short "$_HOSTNAME" A)" fi if [[ -z $_IPV6 ]] && [[ -n "$_HOSTNAME" ]] && [[ -x "$(which dig)" ]]; then _IPV6="$(dig +short "$_HOSTNAME" AAAA)" fi IPV4= echo "" echo -e "\033[32m--\033[m" echo "" echo "Insert IPv4 address" echo "" if [[ -n "$_IPV4" ]]; then echononl "IPv4 address [${_IPV4}]: " read IPV4 if [[ "X${IPV4}" = "X" ]]; then IPV4=$_IPV4 fi else while [[ "X${IPV4}" = "X" ]]; do echononl "IPv4 address: " read IPV4 if [[ "X${IPV4}" = "X" ]]; then echo -e "\n\t\033[33m\033[1mIPv4 address is reqired\033[m\n" fi done fi IPV6= echo "" echo -e "\033[32m--\033[m" echo "" echo "Insert IPv6 address" echo "Type:" echo -e "\t\033[33mNone\033[m if IPv6 is not suppoerted" echo "" if [[ -n "$_IPV6" ]]; then [[ "X$_IPV6" = "Xdisabled" ]] && _IPV6=None echononl "IPv6 address [${_IPV6}]: " read IPV6 if [[ "X${IPV6}" = "X" ]]; then IPV6=$_IPV6 fi else while [[ "X${IPV6}" = "X" ]]; do echononl "IPv6 address: " read IPV6 if [[ "X${IPV6}" = "X" ]]; then echo -e "\n\t\033[33m\033[1mIPv4 address is reqired\033[m\n" fi done fi if [ "X$IPV6" = "Xnone" -o "X$IPV6" = "XNone" ]; then IPV6=disabled fi IS_RELAY_HOST= echo "" echo -e "\033[32m--\033[m" echo "" echo "How will this Mailserver be used?" echo "" if [[ -n "$_IS_RELAY_HOST" ]]; then if $_IS_RELAY_HOST ; then echo "[1] Complete Mailserver (with mailboxes)" echo -e "\033[37m\033[1m[2] Mailrelay Host\033[m" else echo -e "\033[37m\033[1m[1] complete Mailserver (with mailboxes)\033[m" echo "[2] Mailrelay Host" fi echo "" echononl "Choose a number or press for highlighted value: " else echo "[1] Complete Mailserver (with mailboxes)" echo "[2] Mailrelay Host" echo "" echononl "Choose a Number: " fi while [[ "$IS_RELAY_HOST" != "true" && "$IS_RELAY_HOST" != "false" ]];do read OPTION case $OPTION in 1) IS_RELAY_HOST=false ;; 2) IS_RELAY_HOST=true ;; '') if [[ -n "$_IS_RELAY_HOST" ]] ; then IS_RELAY_HOST=$_IS_RELAY_HOST else echo "" echo -e "\tWrong entry! [ 1 = Complete Mailserver ; 2 = Mailrelay Host]" echo "" echononl "Reentry: " fi ;; *) IS_RELAY_HOST= echo "" if [[ -n "$_IS_RELAY_HOST" ]]; then echo -e "\tWrong entry! [ 1 = Complete Mailserver ; 2 = Mailrelay Host] or type " else echo -e "\tWrong entry! [ 1 = Complete Mailserver ; 2 = Mailrelay Host]" fi echo "" echononl "Reentry: " ;; esac done SASL_AUTH_ENABLED="no" if $IS_RELAY_HOST ; then SASL_AUTH_ENABLED="" echo "" echo -e "\033[32m--\033[m" echo "" echo "Should this mail relay server support Cyrus SASL authentication?" echo "" while [[ "$SASL_AUTH_ENABLED" != "yes" && "$SASL_AUTH_ENABLED" != "no" ]];do if [[ -n "$_SASL_AUTH_ENABLED" ]]; then echononl "Support Cyrus SASL authentication [${_SASL_AUTH_ENABLED}]: " read SASL_AUTH_ENABLED SASL_AUTH_ENABLED=${SASL_AUTH_ENABLED,,} [[ -z "$SASL_AUTH_ENABLED" ]] && SASL_AUTH_ENABLED="$_SASL_AUTH_ENABLED" else echononl "Support Cyrus SASL authentication [yes/no]: " read SASL_AUTH_ENABLED SASL_AUTH_ENABLED=${SASL_AUTH_ENABLED,,} fi if [[ "$SASL_AUTH_ENABLED" != "yes" && "$SASL_AUTH_ENABLED" != "no" ]] ; then _SASL_AUTH_ENABLED="" echo -e "\n\t\033[33m\033[1mWrong entry!\033[m\n Type 'yes' or 'no'" fi done fi ADMIN_EMAIL= echo "" echo "" echo -e "\033[32m--\033[m" echo "" echo "Insert e-mail address where messages to local root should be forwarded" echo "" echo "" if [[ -n "$_ADMIN_EMAIL" ]]; then echononl "Admin e-mail address [$_ADMIN_EMAIL]: " read ADMIN_EMAIL if [[ "X${ADMIN_EMAIL}" = "X" ]]; then ADMIN_EMAIL=$_ADMIN_EMAIL fi else while [[ "X${ADMIN_EMAIL}" = "X" ]]; do echononl "Admin e-mail address: " read ADMIN_EMAIL if [[ "X${ADMIN_EMAIL}" = "X" ]]; then echo -e "\n\t\033[33m\033[1mAdmin e-mail address is reqired\033[m\n" fi done fi echo "" echo "" echo -e "\033[21G\033[32mStart installation/configuration with the following parameters\033[m" echo "" echo -e "\tHostname..........................: $HOSTNAME" echo -e "\tIPv4 address......................: $IPV4" echo -e "\tIPv6 address......................: $IPV6" echo -e "\tAdmin e-mail......................: $ADMIN_EMAIL" echo "" if $IS_RELAY_HOST ; then echo -e "\tConfigure as relay host?..........: \033[33m\033[1m$IS_RELAY_HOST\033[m" echo -e "\tConfigure as complete mailserver..: false" echo "" echo -e "\tSupport Cyrus SASL authentication.: $SASL_AUTH_ENABLED" else echo -e "\tConfigure as relay host?..........: $IS_RELAY_HOST" echo -e "\tConfigure as complete mailserver..: \033[33m\033[1mtrue\033[m" fi echo "" echononl "einverstanden (yes/no): " read OK OK=${OK,,} while [ "X$OK" != "Xyes" -a "X$OK" != "Xno" ]; do echononl "Wrong entry! [yes/no]: " read OK OK=${OK,,} done [ $OK = "yes" ] || fatal Repeat with other settings.. echo "" echo "" _failed=false echononl " Save Configuration" cat << EOF > $conf_file # --- # - Parameter Settins Postfix Relay System # --- _HOSTNAME=$HOSTNAME _IPV4=$IPV4 _IPV6=$IPV6 _ADMIN_EMAIL=$ADMIN_EMAIL _IS_RELAY_HOST=$IS_RELAY_HOST EOF if [[ $? -ne 0 ]]; then _failed=true fi if $IS_RELAY_HOST ; then cat << EOF >> $conf_file _SASL_AUTH_ENABLED=$SASL_AUTH_ENABLED EOF fi if [[ $? -ne 0 ]]; then _failed=true fi if $_failed ; then echo_failed else echo_ok fi [[ "$IPV6" = "disabled" ]] && IPV6="" # - Synchronise package index files with the repository # - echononl " Synchronise package index files with the repository.." apt-get update > "$tmp_err_msg" 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi # - Deinstall debian exim4 packages # - echononl " Deinstall debian exim4 packages" _installed_exim_packages=`dpkg -l | grep exim4 | grep -e "^i" | awk '{print$2}'` for _pkg in $_installed_exim_packages ; do installed_exim_packages="$installed_exim_packages $_pkg" done if [[ -n "$installed_exim_packages" ]] ; then if `dpkg -l | grep bsd-mailx | grep -e "^i" > /dev/null 2>&1` ; then installed_exim_packages="$installed_exim_packages bsd-mailx" fi apt-get remove --purge -qq -y $installed_exim_packages > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi # - Install Postfix from debian packages system # - echononl " Install Postfix from debian packages system" _needed_packages="postfix postfix-pgsql postfix-mysql postfix-pcre libsasl2-modules bsd-mailx haveged" if [[ "$SASL_AUTH_ENABLED" = "yes" ]]; then _needed_packages="$_needed_packages sasl2-bin" fi for _pkg in $_needed_packages ; do if `dpkg -l | grep $_pkg | grep -e "^i" > /dev/null 2>&1` ; then continue else needed_packages="$needed_packages $_pkg" fi done if [[ -n "$needed_packages" ]]; then DEBIAN_FRONTEND=noninteractive apt-get -y install $needed_packages > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi if [[ "$os_dist" = "debian" ]] && [[ $os_version -ne 10 ]] ; then ## - Install Postgrey from debian packages system ## - echononl " Install Postgrey from debian packages system" _pkg="postgrey" if aptitude search $_pkg | grep " $_pkg " | grep -e "^i" > /dev/null 2>&1 ; then echo_skipped else DEBIAN_FRONTEND=noninteractive apt-get -y install $_pkg > /dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi fi echononl " Adjust /etc/default/postgrey" # postgrey as tcp/ip socket # #perl -i -n -p -e "s#^(\s*)(POSTGREY_OPTS=.*)#\#\1\2\nPOSTGREY_OPTS=\"--inet=127.0.0.1:10023 --delay=149 --auto-whitelist-clients=3 --lookup-by-subnet\"#" \ # /etc/default/postgrey > $tmp_err_msg 2>&1 # postgrey as unix socket # perl -i -n -p -e "s#^(\s*)(POSTGREY_OPTS=.*)#\#\1\2\nPOSTGREY_OPTS=\"--unix=/var/spool/postfix/postgrey/postgrey.sock --delay=149 --auto-whitelist-clients=3 --lookup-by-subnet\"#" \ /etc/default/postgrey > $tmp_err_msg 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi echononl " Create /etc/postgrey/whitelist_clients.local (additional whitelist entries)" cat << EOF > /etc/postgrey/whitelist_clients.local # For Office 365 - servers: ##/.*outbound.protection.outlook.com\$/ /^mail-.*\\.outbound\\.protection\\.outlook\\.com\$/ # facebookmail.com - big pool /.*\\.mail-mail\\.facebook\\.com\$/ # tor hidde service 127.0.0.25 EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi echononl " Create the Postgrey socket directory in Postfix's work aerea.." if [[ -d "${postgrey_socket_dir}" ]]; then echo_skipped else mkdir "${postgrey_socket_dir}" > /dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" echononl "\tcontinue anyway [yes/no]: " read OK OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')" while [[ "$OK" != "yes" ]] && [[ "$OK" != "no" ]] ; do echononl "Wrong entry! - repeat [yes/nno]: " read OK done [[ $OK = "yes" ]] || fatal "Abbruch durch User" fi fi echononl " Set ownership on directory '${postgrey_socket_dir}'.." chown -R postgrey:postgrey ${postgrey_socket_dir} 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" echononl "\tcontinue anyway [yes/no]: " read OK OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')" while [[ "$OK" != "yes" ]] && [[ "$OK" != "no" ]] ; do echononl "Wrong entry! - repeat [yes/nno]: " read OK done [[ $OK = "yes" ]] || fatal "Abbruch durch User" fi echononl " Enable Postgrey service at boot time.." if $systemd_exists ; then systemctl enable networking >/dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else echo_skipped warn "Skipped this step because systemd service was not found." fi echononl " Restart postrey daemon" if $systemd_exists ; then systemctl restart postgrey > /dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else /etc/init.d/postgrey restart > /dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi fi postgrey_socket="postgrey/postgrey.sock" #postgrey_additional_options="postgrey_time_limit = 3600" postgrey_additional_options="" else ## - Install tumgreyspf from debian packages system echononl " Install tumgreyspf from debian packages system" _pkg="tumgreyspf" if aptitude search $_pkg | grep " $_pkg " | grep -e "^i" > /dev/null 2>&1 ; then echo_skipped else DEBIAN_FRONTEND=noninteractive apt-get -y install $_pkg > /dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi fi echononl " Add entry for 'tumgreyspf' at end of file '$postfix_master_cf" if ! $(grep -iq -E "^\s*tumgreyspf\s+" 2>/dev/null $postfix_master_cf) ; then cat <> /etc/postfix/master.cf 2> $tmp_err_msg # This is tumgreyspf, an external policy checker for the postfix mail server. # It can optionally greylist and/or use spfquery to check SPF records to # determine if email should be accepted by your server. # tumgreyspf unix - n n - - spawn user=tumgreyspf argv=/usr/bin/tumgreyspf EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi echononl " Create configuration file for whitelisting: /etc/tumgreyspf/disable.conf" if [[ ! -f /etc/tumgreyspf/disable.conf ]] ; then cat < "/etc/tumgreyspf/disable.conf" 2> $tmp_err_msg SPFSEEDONLY=0 GREYLISTTIME=300 CHECKERS= OTHERCONFIGS= EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else echo_skipped fi _failed=false echononl " Whitelist tor hidde service '127.0.0.25'.." if [[ ! -d "/var/lib/tumgreyspf/config/client_address/127/0/0/" ]] ; then mkdir -p /var/lib/tumgreyspf/config/client_address/127/0/0/ 2> $tmp_err_msg if [[ $? -ne 0 ]]; then _failed=true fi fi if [[ ! -L /var/lib/tumgreyspf/config/client_address/127/0/0/25 ]]; then ln -s /etc/tumgreyspf/disable.conf /var/lib/tumgreyspf/config/client_address/127/0/0/25 2>> $tmp_err_msg fi if [[ $? -ne 0 ]]; then _failed=true fi if $_failed ; then echo_failed error "$(cat $tmp_err_msg)" else echo_ok fi # --- # Configure parameters of tumgreyspf service # --- _setup_key="SPFSEEDONLY" _setup_val="0" _setup_file="/etc/tumgreyspf/default.conf" echononl " Setup defaults for tumgreyspf: $_setup_key .." if ! $(grep -iq -E "^\s*${_setup_key}\s*=" "$_setup_file") ; then cat <> "$_setup_file" 2> $tmp_err_msg # Added by script $(basename $0) at $(date +%Y-%m-%d) $_setup_key = $_setup_val EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else if ! $(grep -iq -E "^\s*${_setup_key}\s*=\s*0$" "$_setup_file") ; then perl -i -n -p -e "s/(\s*${_setup_key}.*)/#\1\n${_setup_key} = $_setup_val/" "$_setup_file" 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else echo_skipped fi fi _setup_key="GREYLISTTIME" _setup_val="180" _setup_file="/etc/tumgreyspf/default.conf" echononl " Setup defaults for tumgreyspf: $_setup_key .." if ! $(grep -iq -E "^\s*${_setup_key}\s*=" "$_setup_file") ; then cat <> "$_setup_file" 2> $tmp_err_msg # Added by script $(basename $0) at $(date +%Y-%m-%d) $_setup_key = $_setup_val EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else if ! $(grep -iq -E "^\s*${_setup_key}\s*=\s*${_setup_val/}$" "$_setup_file") ; then perl -i -n -p -e "s/(\s*${_setup_key}.*)/#\1\n${_setup_key} = $_setup_val/" "$_setup_file" 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else echo_skipped fi fi _setup_key="CHECKERS" _setup_val="spf,greylist" _setup_file="/etc/tumgreyspf/default.conf" echononl " Setup defaults for tumgreyspf: $_setup_key .." if ! $(grep -iq -E "^\s*${_setup_key}\s*=" "$_setup_file") ; then cat <> "$_setup_file" 2> $tmp_err_msg # Added by script $(basename $0) at $(date +%Y-%m-%d) $_setup_key = $_setup_val EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else if ! $(grep -iq -E "^\s*${_setup_key}\s*=\s*${_setup_val/}$" "$_setup_file") ; then perl -i -n -p -e "s/(\s*${_setup_key}.*)/#\1\n${_setup_key} = $_setup_val/" "$_setup_file" 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else echo_skipped fi fi _setup_key="OTHERCONFIGS" _setup_val="client_address,envelope_sender,envelope_recipient" _setup_file="/etc/tumgreyspf/default.conf" echononl " Setup defaults for tumgreyspf: $_setup_key .." if ! $(grep -iq -E "^\s*${_setup_key}\s*=" "$_setup_file") ; then cat <> "$_setup_file" 2> $tmp_err_msg # Added by script $(basename $0) at $(date +%Y-%m-%d) $_setup_key = $_setup_val EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else if ! $(grep -iq -E "^\s*${_setup_key}\s*=\s*${_setup_val/}$" "$_setup_file") ; then perl -i -n -p -e "s/(\s*${_setup_key}.*)/#\1\n${_setup_key} = $_setup_val/" "$_setup_file" 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else echo_skipped fi fi _setup_key="GREYLISTEXPIREDAYS" _setup_val="10.0" _setup_file="/etc/tumgreyspf/default.conf" echononl " Setup defaults for tumgreyspf: $_setup_key .." if ! $(grep -iq -E "^\s*${_setup_key}\s*=" "$_setup_file") ; then cat <> "$_setup_file" 2> $tmp_err_msg # Added by script $(basename $0) at $(date +%Y-%m-%d) $_setup_key = $_setup_val EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else if ! $(grep -iq -E "^\s*${_setup_key}\s*=\s*${_setup_val/}$" "$_setup_file") ; then perl -i -n -p -e "s/(\s*${_setup_key}.*)/#\1\n${_setup_key} = $_setup_val/" "$_setup_file" 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else echo_skipped fi fi postgrey_socket="unix:private/tumgreyspf" postgrey_additional_options="tumgreyspf_time_limit = 3600" fi ## - Install Postfix Firewall Daemon from debian packages system ## - echononl " Install Postfix Firewall Daemon from debian packages system" _pkg="postfwd" if aptitude search $_pkg | grep " $_pkg " | grep -e "^i" > /dev/null 2>&1 ; then echo_skipped else DEBIAN_FRONTEND=noninteractive apt-get -y install $_pkg > /dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi fi echononl " Adjust /etc/default/postfwd" perl -i -n -p -e "s#^(\s*)(STARTUP=.*)#\#\1\2\nSTARTUP=1#" \ /etc/default/postfwd > $tmp_err_msg 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi _file="/etc/postfix/postfwd.wl-nets" echononl " Create whitelist file '$_file' for postfwd" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # Trusted networks whitelisted by postfwd # # Example: # # # web0.warenform.de # #83.223.86.76 # #2a01:30:0:505:286:96ff:fe4a:6ee # #2a01:30:0:13:286:96ff:fe4a:6eee # # --- # give truested networrk adresses here EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi _file="/etc/postfix/postfwd.wl-hosts" echononl " Create whitelist file '$_file' for postfwd" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # Trusted hosts whitelisted by postfwd # # This file is called with '=~'. This means perl regexp is possible # # Example: # # # all hosts of domain 'oopen.de' # \.oopen\.de$ # # # host a.mx.oopen.de # a.mx.oopen.de # # --- # give truested hostnames here EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi _file="/etc/postfix/postfwd.wl-user" echononl " Create whitelist file '$_file' for postfwd" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # SASL Users whitelisted by postfwd # --- EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi _file="/etc/postfix/postfwd.wl-sender" echononl " Create whitelist file '$_file' for postfwd" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # Trusted senders whitelisted by postfwd # # This file is called with '=~'. This means perl regexp is possible # # Example: # # # all senders of maildomaindomain 'oopen.de' # @oopen\.de$ # # # sender address ckubu@oopen.de # ckubu@oopen.de # # --- # give trusted sender addresses here EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi _file="/etc/postfix/postfwd.bl-nets" echononl " Create whitelist file '$_file' for postfwd" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # Networks blocked by postfwd # # Example: # # # web0.warenform.de # #83.223.86.76 # #2a01:30:0:505:286:96ff:fe4a:6ee # #2a01:30:0:13:286:96ff:fe4a:6eee # # --- # give networks to block here EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi _file="/etc/postfix/postfwd.bl-hosts" echononl " Create whitelist file '$_file' for postfwd" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # hosts blocked by postfwd # # This file is called with '=~'. This means perl regexp is possible # # Example: # # # block all hosts of domain 'oopen.de' # \.oopen\.de$ # # # block host a.mx.oopen.de # a.mx.oopen.de # # --- # give hostnames to blocke here EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi _file="/etc/postfix/postfwd.bl-user" echononl " Create whitelist file '$_file' for postfwd" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # SASL Users blocked by postfwd # --- EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi _file="/etc/postfix/postfwd.bl-sender" echononl " Create whitelist file '$_file' for postfwd" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # Sender addresses blocked by postfwd # --- # annoying spammer domains @acieu.co.uk # annoying spammer addresses error@mailfrom.com EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi _file="/etc/postfix/postfwd.bl-sender" echononl " Create whitelist file '$_file' for postfwd" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # Sender addresses blocked by postfwd # # This file is called with '=~'. This means perl regexp is possible # # Example: # # # all senders of maildomaindomain 'oopen.de' # @oopen\.de$ # # # sender address ckubu@oopen.de # ckubu@oopen.de # # --- # annoying spammer domains @acieu.co.uk # annoying spammer addresses error@mailfrom.com EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi echononl " Create configuration file '/etc/postfix/postfwd.cf'.." if [[ ! -f "/etc/postfix/postfwd.cf" ]]; then cat << EOF > /etc/postfix/postfwd.cf #======= Definitions ============ # Match messages with an associated SASL username &&SASL_AUTH { sasl_username!~^\$ } # Trusted networks &&TRUSTED_NETS { client_address==file:/etc/postfix/postfwd.wl-nets } # Trusted hostnames # client_name~=.warenform.de$ &&TRUSTED_HOSTS { client_name=~file:/etc/postfix/postfwd.wl-hosts } # Trusted users &&TRUSTED_USERS { sasl_username==file:/etc/postfix/postfwd.wl-user } # Trusted senders &&TRUSTED_SENDERS { sender=~file:/etc/postfix/postfwd.wl-sender } # Blacklist networks &&BLOCK_NETS { client_address==file:/etc/postfix/postfwd.bl-nets } # Blacklist hostnames &&BLOCK_HOSTS { client_name=~file:/etc/postfix/postfwd.bl-hosts } # Blacklist users &&BLOCK_USERS { sasl_username==file:/etc/postfix/postfwd.bl-user } # Blacklist sender adresses &&BLOCK_SENDER { # =~ # using '=~' allows also matching entries for domains (i.e. @acieu.co.uk) sender=~file:/etc/postfix/postfwd.bl-sender } # Inbound emails only &&INCOMING { client_address!=127.0.0.1 } #======= Rule Sets ============ # --- # # Processing of the Rule Sets # # The parser checks the elements of a policy delegation request against the postfwd set # of rules and, if necessary, triggers the configured action (action=). Similar to a # classic firewall, a rule is considered true if every element of the set of rules (or # one from every element list) applies to the comparison. I.e. the following rule: # # client_address=1.1.1.1, 1.1.1.2; client_name==unknown; action=REJECT # # triggers a REJECT if the # # Client address is equal (1.1.1.1 OR 1.1.1.2) AND the client name 'unknown' # # # Note: # If an element occurs more than once, an element list is formed: # # The following rule set is equivalent to the above: # # client_address=1.1.1.1; client_address=1.1.1.2; client_name==unknown; action=REJECT # # # triggers a REJECT if (as above) the # # Client address (1.1.1.1 OR 1.1.1.2) AND the client name 'unknown' # # --- # Whitelists # Whitelist trusted networks id=WHL_NETS &&TRUSTED_NETS action=DUNNO # Whitelist trusted hostnames id=WHL_HOSTS &&TRUSTED_HOSTS action=DUNNO # Whitelist sasl users id=WHL_USERS &&TRUSTED_USERS action=DUNNO # Whitelist senders id=WHL_SENDERS &&INCOMING &&TRUSTED_SENDERS action=DUNNO # Blacklists # Block networks id=BL_NETS &&BLOCK_NETS action=REJECT Network Address \$\$client_address blocked by Mailserver admins. Error: BL_NETS # Block hostname id=BL_HOSTS &&BLOCK_HOSTS action=REJECT \$\$client_name blocked by Mailserver admins. Error: BL_HOSTS # Block users id=BL_USERS &&BLOCK_USERS action=REJECT User is blocked by Mailserver admins. Error: BL_USERS # Blacklist sender # # Claim successful delivery and silently discard the message. # id=BL_SENDER &&BLOCK_SENDER #action=DISCARD action=REJECT Sender address is blocked by Mailserver admins. Error: BL_SENDER # Rate Limits # Throttle unknown clients to 5 recipients per 5 minutes: id=RATE_UNKNOWN_CLIENT_ADDR sasl_username =~ /^$/ client_name==unknown action=rate(client_address/5/300/450 4.7.1 only 5 recipients per 5 minutes allowed) # Block clients (ip-addresses) sending more than 50 messages per minute exceeded. Error:RATE_CLIENT) id=RATE_CLIENT_ADDR &&INCOMING action=rate(\$\$client_address/50/60/421 421 4.7.0 Too many connections from \$\$client_address) # Block messages with more than 50 recipients id=BLOCK_MSG_RCPT &&INCOMING &&SASL_AUTH recipient_count=50 action=REJECT Too many recipients, please reduce to less than 50 or consider using a mailing list. Error: BLOCK_MSG_RCPT # Block users sending more than 50 messages/hour id=RATE_MSG &&INCOMING &&SASL_AUTH action=rate(\$\$sasl_username/50/3600/450 4.7.1 Number messages per hour exceeded. Error:RATE_MSG) # Block users sending more than 250 recipients total/hour id=RATE_RCPT &&INCOMING &&SASL_AUTH action=rcpt(\$\$sasl_username/250/3600/450 4.7.1 Number recipients per hour exceeded. Error:RATE_RCPT) EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi echononl " Enable Postfix firewall daemon at boot time .." if $systemd_exists ; then systemctl enable postfwd > /dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else update-rc.d postfwd defaults > /dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi fi echononl " Restart Postfix firewall daemon 'postfwd'.." if $systemd_exists ; then systemctl restart postfwd > /dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else /etc/init.d/postfwd restart > /dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi fi # - Backup existing postfix configuration file # - echononl " Backup existing postfix configuration file" if [[ -f "/etc/postfix/main.cf" ]]; then cp -a /etc/postfix/main.cf /etc/postfix/main.cf.$backup_date if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi # - Creeate new postfix configuration file # - echononl " Creeate new postfix configuration file" cat < /etc/postfix/main.cf # ============ Basic settings ============ # Disable backwards compatibility compatibility_level = 2 # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. #myorigin = /etc/mailname myorigin = /etc/mailname smtpd_banner = \$myhostname ESMTP \$mail_name (Debian/GNU) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = /usr/share/doc/postfix html_directory = /usr/share/doc/postfix/html ## - The Internet protocols Postfix will attempt to use when making ## - or accepting connections. ## - DEFAULT: ipv4 EOF if [ -n "$IPV6" ]; then cat <> /etc/postfix/main.cf inet_protocols = ipv4, ipv6 #inet_interfaces = all inet_interfaces = 127.0.0.1 $IPV4 $IPV6 myhostname = $HOSTNAME mydestination = $HOSTNAME localhost ## - The list of "trusted" SMTP clients that have more ## - privileges than "strangers" ## - mynetworks = # +++++++++++++++++++++++++++++++++++++ # replace 127.0.0.1/8 with 127.0.0.1/32 # +++++++++++++++++++++++++++++++++++++ # So we can use i.e 127.0.0.25 (or any other 127.x.x.x address) # to bind to hidden tor service on port 25 without having an # open relay # # see also: https://github.com/ehloonion/onionmx/blob/master/open-relay.md # #127.0.0.0/8 127.0.0.1/32 [::ffff:127.0.0.0]/104 [::1]/128 ${IPV4}/32 [${IPV6}]/128 # a.mx.oopen.de #95.217.204.247/32 #[2a01:4f9:4a:47e5::247]/128 # b.mx.oopen.de #162.55.82.73/32 #[2a01:4f8:271:1266::73]/128 # d.mx.oopen.de #95.217.204.227/32 #[2a01:4f9:4a:47e5::227]/128 # e.mx.oopen.de #95.217.204.205/32 #[2a01:4f9:4a:47e5::205]/128 smtp_bind_address = $IPV4 smtp_bind_address6 = $IPV6 # The address type ("ipv6", "ipv4" or "any") that the Postfix SMTP client will try first, # when a destination has IPv6 and IPv4 addresses with equal MX preference. This feature # has no effect unless the inet_protocols setting enables both IPv4 and IPv6. # #smtp_address_preference = ipv4 EOF else cat <> /etc/postfix/main.cf inet_protocols = ipv4 #inet_interfaces = all inet_interfaces = 127.0.0.1 $IPV4 myhostname = $HOSTNAME mydestination = $HOSTNAME localhost ## - The list of "trusted" SMTP clients that have more ## - privileges than "strangers" ## - mynetworks = # +++++++++++++++++++++++++++++++++++++ # replace 127.0.0.1/8 with 127.0.0.1/32 # +++++++++++++++++++++++++++++++++++++ # So we can use i.e 127.0.0.25 (or any other 127.x.x.x address) # to bind to hidden tor service on port 25 without having an # open relay # # see also: https://github.com/ehloonion/onionmx/blob/master/open-relay.md # #127.0.0.0/8 127.0.0.1/32 ${IPV4}/32 # a.mx.oopen.de #95.217.204.247 # b.mx.oopen.de #162.55.82.73 # d.mx.oopen.de #95.217.204.227/32 smtp_bind_address = $IPV4 #smtp_bind_address6 = $IPV6 EOF fi cat <> /etc/postfix/main.cf ## - The method to generate the default value for the mynetworks parameter. ## - ## - mynetworks_style = host" when Postfix should "trust" only the local machine ## - mynetworks_style = subnet (default value) "when Postfix should "trust" SMTP ## - clients in the same IP subnetworks as the local machine. ## - mynetworks_style = class" when Postfix should "trust" SMTP clients in the same ## - IP class A/B/C networks as the local machine. ## - #mynetworks_style = host ## - The maximal size of any local(8) individual mailbox or maildir file, ## - or zero (no limit). In fact, this limits the size of any file that is ## - written to upon local delivery, including files written by external ## - commands that are executed by the local(8) delivery agent. ## - mailbox_size_limit = 0 ## - The maximal size in bytes of an individual virtual(8) mailbox or ## - maildir file, or zero (no limit). ## - virtual_mailbox_limit = 0 ## - The maximal size in bytes of a message, including envelope information. ## - ## - we user 50MB ## - message_size_limit = 52480000 ## - The system-wide recipient address extension delimiter ## - recipient_delimiter = + ## - The alias databases that are used for local(8) delivery. ## - alias_maps = hash:/etc/aliases ## - The alias databases for local(8) delivery that are updated ## - with "newaliases" or with "sendmail -bi". ## - alias_database = hash:/etc/aliases ## - Optional address mapping lookup tables for envelope and header sender ## - addresses. The table format and lookups are documented in canonical(5). ## - ## - Example: you want to rewrite the SENDER address "user@ugly.domain" ## - to "user@pretty.domain", while still being able to send mail to the ## - RECIPIENT address "user@ugly.domain". ## - ## - Note: \$sender_canonical_maps is processed before \$canonical_maps. ## - sender_canonical_maps = btree:/etc/postfix/sender_canonical ## - Optional lookup tables with mappings from recipient address ## - to (message delivery transport, next-hop destination). ## - See transport(5) for details. ## - transport_maps = btree:/etc/postfix/transport btree:/etc/postfix/relay_domains ## - The maximal time a message is queued before it is sent back as ## - undeliverable. Defaults to 5d (5 days) ## - Specify 0 when mail delivery should be tried only once. ## - maximal_queue_lifetime = 12h bounce_queue_lifetime = \$maximal_queue_lifetime ## - delay_warning_time (default: 0h) ## - ## - The time after which the sender receives a copy of the message ## - headers of mail that is still queued. To enable this feature, ## - specify a non-zero time value (an integral value plus an optional ## - one-letter suffix that specifies the time unit). ## - Time units: s (seconds), m (minutes), h (hours), d (days), w (weeks). ## - The default time unit is h (hours). delay_warning_time = 4h # ============ header/mime-header/body checks ============ header_checks = pcre:/etc/postfix/header_checks.pcre mime_header_checks = pcre:/etc/postfix/mime_header_check.pcre body_checks = pcre:/etc/postfix/body_check.pcre prepend_delivered_header = forward file ## - proxy_read_maps ## - ## - The lookup tables that the proxymap(8) server is allowed to access for the read-only service. ## - ## - Specify zero or more "type:name" lookup tables, separated by whitespace or comma. Table ## - references that don't begin with proxy: are ignored. ## - #proxy_read_maps = \$local_recipient_maps \$mydestination \$virtual_alias_maps \$virtual_alias_domains \$virtual_mailbox_maps \$virtual_mailbox_domains \$relay_recipient_maps \$relay_domains \$canonical_maps \$sender_canonical_maps \$recipient_canonical_maps \$relocated_maps \$transport_maps \$mynetworks \$sender_bcc_maps \$recipient_bcc_maps \$smtp_generic_maps \$lmtp_generic_maps \$smtpd_sender_login_maps # ============ Relay parameters ============ relayhost = relay_domains = \$mydestination btree:/etc/postfix/relay_domains # ============ TLS parameters ============ ## - supports DNSSEC ## - ## - !! Notice !! ## - In order to support DNSSEC and DANE your resolver MUST support ## - DNSSEC too. ## - ## - If your resolver does not support DNSSEC, install "unbound". ## - smtp_host_lookup = dns smtp_dns_support_level = dnssec ## - Aktiviert TLS für den Mailempfang ## - ## - may: ## - Opportunistic TLS. Use TLS if this is supported by the remote ## - SMTP server, otherwise use plaintext ## - ## - This overrides the obsolete parameters smtpd_use_tls and ## - smtpd_enforce_tls. This parameter is ignored with ## - "smtpd_tls_wrappermode = yes". #smtpd_use_tls=yes smtpd_tls_security_level=may ## - Aktiviert TLS für den Mailversand ## - ## - may: ## - Opportunistic TLS: announce STARTTLS support to SMTP clients, ## - but do not require that clients use TLS encryption. # smtp_use_tls=yes #smtp_tls_security_level=may smtp_tls_security_level=dane ## - 0 Disable logging of TLS activity. ## - 1 Log TLS handshake and certificate information. ## - 2 Log levels during TLS negotiation. ## - 3 Log hexadecimal and ASCII dump of TLS negotiation process. ## - 4 Also log hexadecimal and ASCII dump of complete transmission after STARTTLS. ## - smtpd_tls_loglevel = 1 smtp_tls_loglevel = 1 smtpd_tls_cert_file = $_TLS_CERT_FILE smtpd_tls_key_file = $_TLS_KEY_FILE ## - File with DH parameters that the Postfix SMTP server should use with EDH ciphers. ## - ## - Dont't forget to create it, e.g with openssl: ## - openssl dhparam -out /etc/postfix/ssl/dh_1024.pem -2 1024 ## - ## - or using '-dsaparam' to avoid long creation time: ## - openssl dhparam -dsaparam -out /etc/postfix/ssl/dh_1024.pem 1024 ## - #smtpd_tls_dh1024_param_file = /etc/postfix/ssl/dh_1024.pem ## - also possible to use 2048 key with that parameter ## - smtpd_tls_dh1024_param_file = /etc/postfix/ssl/dh_2048.pem ## - File with DH parameters that the Postfix SMTP server should use with EDH ciphers. ## - ## - Dont't forget to create it, e.g with openssl: ## - openssl dhparam -out /etc/postfix/ssl/dh_512.pem -2 512 ## - ## - or using '-dsaparam' to avoid long creation time: ## - openssl dhparam -dsaparam -out /etc/postfix/ssl/dh_512.pem 512 ## - smtpd_tls_dh512_param_file = /etc/postfix/ssl/dh_512.pem ## - File containing CA certificates of root CAs trusted to sign either remote SMTP ## - server certificates or intermediate CA certificates. These are loaded into ## - memory !! BEFORE !! the smtp(8) client enters the chroot jail. ## - smtp_tls_CAfile = $_TLS_CA_FILE ## - Directory with PEM format certificate authority certificates that the Postfix SMTP ## - client uses to verify a remote SMTP server certificate. Don't forget to create the ## - necessary "hash" links with, for example, " ## - /usr/bin/c_rehash /etc/postfix/certs". ## - ## - !! Note !! ## - To use this option in chroot mode, this directory (or a copy) must be inside ## - the chroot jail. ## - ## - Note that a chrooted daemon resolves all filenames relative to the Postfix ## - queue directory (/var/spool/postfix) ## - #smtpd_tls_CApath = /etc/postfix/certs # Disable SSLv2 SSLv3 - Postfix SMTP server # # List of TLS protocols that the Postfix SMTP server will exclude or # include with opportunistic TLS encryption. smtpd_tls_protocols = !SSLv2, !SSLv3 # # The SSL/TLS protocols accepted by the Postfix SMTP server # with mandatory TLS encryption. smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3 # Disable SSLv2 SSLv3 - Postfix SMTP client # # List of TLS protocols that the Postfix SMTP client will exclude or # include with opportunistic TLS encryption. smtp_tls_protocols = !SSLv2, !SSLv3 # # List of SSL/TLS protocols that the Postfix SMTP client will use # with mandatory TLS encryption smtp_tls_mandatory_protocols = !SSLv2, !SSLv3 ## - Activate des "Ephemeral Elliptic Curve Diffie-Hellman" (EECDH) key exchange ## - openssl > 1.0 ## - smtpd_tls_eecdh_grade = strong # standard list cryptographic algorithm tls_preempt_cipherlist = yes # Disable ciphers which are less than 256-bit: # #smtpd_tls_mandatory_ciphers = high # # opportunistic smtpd_tls_ciphers = high # Exclude ciphers #smtpd_tls_exclude_ciphers = # RC4 # aNULL # SEED-SHA # EXP # MD5 smtpd_tls_exclude_ciphers = aNULL eNULL EXPORT DES RC4 MD5 PSK aECDH EDH-DSS-DES-CBC3-SHA EDH-RSA-DES-CDC3-SHA KRB5-DE5 CBC3-SHA smtpd_tls_session_cache_database = btree:\${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:\${data_directory}/smtp_scache EOF if $IS_RELAY_HOST ; then cat <> /etc/postfix/main.cf #======= SASL Authentification ============ # Enable SASL authentication smtpd_sasl_auth_enable = $SASL_AUTH_ENABLED # Only offer SMTP AUTH when talking over an encrypted connection smtpd_tls_auth_only = yes smtpd_sasl_type = cyrus smtpd_sasl_path = smtpd # Disallow methods that allow anonymous authentication. smtpd_sasl_security_options = noanonymous smtpd_sasl_tls_security_options = \$smtpd_sasl_security_options # Report the SASL authenticated user name in the smtpd(8) Received message header. smtpd_sasl_authenticated_header = yes # Enable interoperability with remote SMTP clients that implement an obsolete version # of the AUTH command (RFC 4954). Examples of such clients are MicroSoft Outlook # Express version 4 and MicroSoft Exchange version 5.0. # # Specify "broken_sasl_auth_clients = yes" to have Postfix advertise AUTH support # in a non-standard way. # broken_sasl_auth_clients = yes ## - Optional lookup table with the SASL login names that own ## - sender (MAIL FROM) addresses. smtpd_sender_login_maps = #======= Virtual mailboxes ============ ## - Local Mailboxes ## - virtual_mailbox_base = virtual_uid_maps = virtual_gid_maps = EOF else cat <> /etc/postfix/main.cf #======= SASL Authentification ============ ## - Enable SASL authentication in the Postfix SMTP server. By default, ## - the Postfix SMTP server does not use authentication. ## - smtpd_sasl_auth_enable = no ## - Only offer SMTP AUTH when talking over an encrypted connection ## - smtpd_tls_auth_only = yes ## - The SASL plug-in type that the Postfix SMTP server should use for authentication. ## - The available types are listed with the "postconf -a" command. ## - ## - Available values are at least: cyrus, dovecot ## - smtpd_sasl_type = dovecot ## - Implementation-specific information that the Postfix SMTP server passes ## - through to the SASL plug-in implementation that is selected with smtpd_sasl_type. ## - Typically this specifies the name of a configuration file or rendezvous point. ## - smtpd_sasl_path = private/dovecot-auth # Disallow methods that allow anonymous authentication. smtpd_sasl_security_options = noanonymous smtpd_sasl_tls_security_options = \$smtpd_sasl_security_options # Report the SASL authenticated user name in the smtpd(8) Received message header. smtpd_sasl_authenticated_header = no # Enable interoperability with remote SMTP clients that implement an obsolete version # of the AUTH command (RFC 4954). Examples of such clients are MicroSoft Outlook # Express version 4 and MicroSoft Exchange version 5.0. # # Specify "broken_sasl_auth_clients = yes" to have Postfix advertise AUTH support # in a non-standard way. # broken_sasl_auth_clients = yes ## - Optional lookup table with the SASL login names that own ## - sender (MAIL FROM) addresses. smtpd_sender_login_maps = #======= Virtual mailboxes ============ ## - Local Mailboxes ## - virtual_mailbox_base = /var/vmail virtual_uid_maps = static:5000 virtual_gid_maps = static:5000 EOF fi cat <> /etc/postfix/main.cf ## - virtual_transport ## - ================= ## - ## - using postfix ## - virtual_transport = virtual ## - ## - using dovecot lda ## - virtual_transport = dovecot ## - dovecot_destination_recipient_limit = 1 ## - ## - using dovecot's lmtp service ## - virtual_transport = lmtp:unix:private/dovecot-lmtp ## - virtual_transport = virtual virtual_mailbox_maps = virtual_mailbox_domains = ## - Optional lookup tables that alias specific mail addresses or domains ## - to other local or remote address. The table format and lookups are ## - documented in virtual(5). For an overview of Postfix address ## - manipulations see the ADDRESS_REWRITING_README document. ## - virtual_alias_maps = ## - mailman #hash:/var/lib/mailman/data/virtual-mailman ## - Postfix is final destination for the specified list of virtual alias ## - domains, that is, domains for which all addresses are aliased to addresses ## - in other local or remote domains. The SMTP server validates recipient ## - addresses with \$virtual_alias_maps and rejects non-existent recipients. ## - See also the virtual alias domain class in the ADDRESS_CLASS_README file ## - virtual_alias_domains = #======= Rate Limiting ============ # anvil_rate_time_unit (default: 60s) # # The time unit over which client connection rates and other rates are # calculated. # # The default interval is relatively short. Because of the high frequency of # updates, the anvil(8) server uses volatile memory only. Thus, information is # lost whenever the process terminates. # # Specify a non-zero time value (an integral value plus an optional one-letter # suffix that specifies the time unit). Time units: s (seconds), m (minutes), # h (hours), d (days), w (weeks). The default time unit is s (seconds). # # !! Note: # I basically only included it for conciseness. # #anvil_rate_time_unit = 60s # smtpd_soft_error_limit (default: 10) # # The number of errors a remote SMTP client is allowed to make without # delivering mail before the Postfix SMTP server slows down all # its responses. # #smtpd_soft_error_limit = 10 # ----- # Stay off of blacklists: Limit postfix recipients # ================================================ # # see also: # https://grovetech.co/blog/stay-off-of-blacklists-limit-postfix-recipients/ # ---- # smtpd_recipient_limit (default: 1000) # # The maximal number of recipients that the Postfix SMTP server accepts per # message delivery request. # # Note: # You can't restrict this to a to/cc/bcc field - it's for all recipients. # #smtpd_recipient_limit = 50 # smtpd_recipient_overshoot_limit (default: 1000) # # The number of recipients that a remote SMTP client can send in excess of # the limit specified with \$smtpd_recipient_limit, before the Postfix SMTP # server increments the per-session error count for each excess recipient. # #smtpd_recipient_overshoot_limit = 51 # smtpd_hard_error_limit (default: normal: 20, overload: 1) # # The maximal number of errors a remote SMTP client is allowed to make # without delivering mail. The Postfix SMTP server disconnects when the # limit is reached. Normally the default limit is 20, but it changes under # overload to just 1. Valid values are greater than zero. # #smtpd_hard_error_limit = 20 # --- # So you technically need to consider the 3 values here which affect both # inbound & outbound mail. Then there’s the throttling tools. # --- # smtpd_client_recipient_rate_limit (default: 0) # # The maximal number of recipient addresses that any client is allowed to # send to this service per time unit, regardless of whether or not Postfix # actually accepts those recipients. The time unit is specified with the # anvil_rate_time_unit configuration parameter. # # By default, a client can send as many recipient addresses per time unit # as Postfix can accept. # # To disable this feature, specify a limit of 0. # # WARNING: # The purpose of this feature is to limit abuse. It must not be used to # regulate legitimate mail traffic. # #smtpd_client_recipient_rate_limit = 50 # smtpd_client_connection_rate_limit (default: 0) # # The maximal number of connection attempts any client is allowed to make # to this service per time unit. The time unit is specified with the # anvil_rate_time_unit configuration parameter. # # By default, a client can make as many connections per time unit as Postfix # can accept. # # To disable this feature, specify a limit of 0. # # WARNING: # The purpose of this feature is to limit abuse. It must not be used to # regulate legitimate mail traffic. # #smtpd_client_connection_rate_limit = 10 # smtpd_client_message_rate_limit (default: 0) # # The maximal number of message delivery requests that any client is allowed # to make to this service per time unit, regardless of whether or not Postfix # actually accepts those messages. The time unit is specified with the # anvil_rate_time_unit configuration parameter. # # By default, a client can send as many message delivery requests per time unit # as Postfix can accept. # # To disable this feature, specify a limit of 0. # # WARNING: The purpose of this feature is to limit abuse. It must not be used # to regulate legitimate mail traffic. # #smtpd_client_message_rate_limit = 10 # --- # Set default 'Rate Limit' values # --- # default_recipient_limit (default: 20000) # # The default per-transport upper limit on the number of in-memory recipients. # These limits take priority over the global qmgr_message_recipient_limit after # the message has been assigned to the respective transports. # # See also default_extra_recipient_limit and qmgr_message_recipient_minimum. # #default_extra_recipient_limit = 50 # duplicate_filter_limit (default: 1000) # # The maximal number of addresses remembered by the address duplicate filter # for aliases(5) or virtual(5) alias expansion, or for showq(8) queue displays. # #duplicate_filter_limit = 50 # default_destination_recipient_limit (default: 50) # # The default maximal number of recipients per message delivery. This is the # default limit for delivery via the lmtp(8), pipe(8), smtp(8) and virtual(8) # delivery agents. # #default_destination_recipient_limit = 50 # smtp_destination_recipient_limit (default: \$default_destination_recipient_limit) # # The maximal number of recipients per message for the smtp message delivery # transport. This limit is enforced by the queue manager. The message delivery # transport name is the first field in the entry in the master.cf file. # # Note: # Setting this parameter to a value of 1 changes the meaning of # smtp_destination_concurrency_limit from concurrency per domain into concurrency # per recipient. # #smtp_destination_recipient_limit = \$default_destination_recipient_limit #======= smtpd Restrictions ============ # - Order of evaluating smtpd restriction lists: # - # - smtpd_client_restrictions # - smtpd_helo_restrictions # - smtpd_sender_restrictions # - smtpd_relay_restrictions # - smtpd_recipient_restrictions # - smtpd_data_restrictions # - smtpd_end_of_data_restrictions # - # - Note: # - all smtpd restrictions are evaluated until one of them # - results in 'REJECT' ## --- ## - Define smtpd Restrictions ## --- smtpd_restriction_classes = check_greylist check_greylist = check_policy_service unix:$postgrey_socket EOF if [[ -n "$postgrey_additional_options" ]]; then cat <> /etc/postfix/main.cf $postgrey_additional_options EOF fi cat <> /etc/postfix/main.cf # The time limit for delivery to 'postfwd' # # Note # This Parameter is used only if you've defined a 127.0.0.1:10040 spawn service # in master.cf to have postfix control starting/stopping of the service. # # If the service is started externally, such as by an init script, I # don't believe it's used or needed. # # The time limit for all external commands is controlled by command_time_limit # # #127.0.0.1:10040_time_limit = 3600 # smtpd_delay_reject (default: yes) # # Wait until the RCPT TO command before evaluating \$smtpd_client_restrictions, # \$smtpd_helo_restrictions and \$smtpd_sender_restrictions, or wait until the # ETRN command before evaluating \$smtpd_client_restrictions and \$smtpd_helo_restrictions. # # This feature is turned on by default because some clients apparently mis-behave # when the Postfix SMTP server rejects commands before RCPT TO. # # The default setting has one major benefit: it allows Postfix to log recipient address # information when rejecting a client name/address or sender address, so that it is # possible to find out whose mail is being rejected. smtpd_delay_reject = yes ## --- ## smtpd Client Restrictions ## --- smtpd_client_restrictions = permit_sasl_authenticated, permit_mynetworks, # Whitelist clients # check_client_access btree:/etc/postfix/client_whitelist # RBL check - !! comment out if postcreens postscreen_dnsbl_sites is in use # Whitelist (configured at a.ns.oopen.de) # permit_dnswl_client dnswl.oopen.de, # Blacklists # # - rhs stands for right hand side, i.e, the domain name. # # - reject_rhsbl_helo makes Postfix reject email when the client HELO or EHLO hostname is blacklisted. # # - reject_rhsbl_reverse_client: reject the email when the unverified reverse client hostname is # blacklisted. Postfix will fetch the client hostname from PTR record. If the hostname is # blacklisted, reject the email. # # - reject_rhsbl_sender makes Postfix reject email when the MAIL FROM domain is blacklisted. # # - reject_rbl_client: This is an IP-based blacklist. When the client IP address is backlisted, # reject the email. # reject_rhsbl_helo dbl.spamhaus.org, reject_rhsbl_reverse_client dbl.spamhaus.org, reject_rhsbl_sender dbl.spamhaus.org, reject_rbl_client zen.spamhaus.org, reject_rbl_client ix.dnsbl.manitu.net, # Greylisting check # # check_policy_service inet:127.0.0.1:10023, # # # Using defined restriction class (see smtpd_restriction_classes): # # greylist all connections: # check_greylist, # # selctive greylisting: # check_client_access pcre:/etc/postfix/greylist_client_access_pcre, # #warn_if_reject, check_client_access pcre:/etc/postfix/greylist_client_access_pcre, #reject_rbl_client bl.spamcop.net, # Reject the request when # 1) the client IP address->name mapping fails # 2) the name->address mapping fails # 3) the name->address mapping does not match the client IP address. # # Note: # This is a stronger restriction than the reject_unknown_reverse_client_hostname # feature, which triggers only under condition 1) above. # #reject_unknown_client ## --- ## smtpd HELO Restrictions ## --- smtpd_helo_required = yes smtpd_helo_restrictions = permit_mynetworks, permit_sasl_authenticated, # Whitelist clients # check_client_access btree:/etc/postfix/client_whitelist # Reject the request when the HELO or EHLO hostname is malformed. # # Note # specify "smtpd_helo_required = yes" to fully enforce this restriction # (without "smtpd_helo_required = yes", a client can simply skip # reject_invalid_helo_hostname by not sending HELO or EHLO). # reject_invalid_helo_hostname, # Reject the request when the HELO or EHLO hostname is not in fully-qualified # domain or address literal form, as required by the RFC. # reject_non_fqdn_helo_hostname # Don't talk to mail systems that don't know their own hostname. # reject_unknown_helo_hostname ## --- ## - smtpd Sender Restrictions ## --- smtpd_sender_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unknown_sender_domain, reject_non_fqdn_sender reject_unknown_reverse_client_hostname ## --- ## - smtpd Recipient Restrictions ## --- # Applied in the context of a client RCPT TO command, after smtpd_relay_restrictions # smtpd_recipient_restrictions = # only special accounts (postmaster, abuse and other rolr accounts) check_recipient_access btree:/etc/postfix/access_recipient-rfc, # White- / Blacklisting check_sender_access btree:/etc/postfix/access_sender, check_recipient_access btree:/etc/postfix/access_recipient, # permit trusted network (mynetwork) permit_mynetworks, # permit our users permit_sasl_authenticated, # dont' accept misconfigured Mail reject_non_fqdn_recipient, # don't accept misconfigured recipients reject_unknown_recipient_domain, # Reject the request when the RCPT TO address is not listed in the list of valid # recipients for its domain class. See the smtpd_reject_unlisted_recipient # parameter description for details. # # smtpd_reject_unlisted_recipient (default: yes) # # Request that the Postfix SMTP server rejects mail for unknown recipient addresses, # even when no explicit reject_unlisted_recipient access restriction is specified. # This prevents the Postfix queue from filling up with undeliverable MAILER-DAEMON messages. # # An address is always considered "known" when it matches a virtual(5) alias or # a canonical(5) mapping. # - The recipient domain matches \$mydestination, \$inet_interfaces or \$proxy_interfaces, # but the recipient is not listed in \$local_recipient_maps, and \$local_recipient_maps # is not null. # - The recipient domain matches \$virtual_alias_domains but the recipient is not listed # in \$virtual_alias_maps. # - The recipient domain matches \$virtual_mailbox_domains but the recipient is not # listed in \$virtual_mailbox_maps, and \$virtual_mailbox_maps is not null. # - The recipient domain matches \$relay_domains but the recipient is not listed in # \$relay_recipient_maps, and \$relay_recipient_maps is not null. # reject_unlisted_recipient, # reject_unauth_destination # # Reject the request unless one of the following is true: # # - Postfix is mail forwarder: the resolved RCPT TO domain matches \$relay_domains # or a subdomain thereof, and contains no sender-specified routing (user@elsewhere@domain), # # # - Postfix is the final destination: the resolved RCPT TO domain matches # \$mydestination, \$inet_interfaces, \$proxy_interfaces, \$virtual_alias_domains, # or \$virtual_mailbox_domains, and contains no sender-specified routing (user@elsewhere@domain). # # Note: # reject_unauth_destination is not needed here if the mail # relay policy is specified under smtpd_relay_restrictions # (available with Postfix 2.10 and later). #reject_unauth_destination, # Reject the request when mail to the RCPT TO address is known to bounce, or when the # recipient address destination is not reachable. Address verification information is # managed by the verify(8) server; see http://www.postfix.org/ADDRESS_VERIFICATION_README.html # for more details reject_unverified_recipient, # Policyd-Weight #check_policy_service inet:127.0.0.1:12525, # permit Backup MX permit_mx_backup, # permit, if all restrictions so far passed permit ## --- ## - smtpd Relay Restrictions (since version 2.11) ## --- # Access restrictions for mail relay control applied in the context of # the RCPT TO command, before smtpd_recipient_restrictions. # smtpd_relay_restrictions = # only special accounts (postmaster, abuse and other rolr accounts) check_recipient_access btree:/etc/postfix/access_recipient-rfc, # White- / Blacklisting check_sender_access btree:/etc/postfix/access_sender, check_recipient_access btree:/etc/postfix/access_recipient, # permit trusted network (mynetwork) permit_mynetworks, # permit our users permit_sasl_authenticated, # dont' accept misconfigured Mail reject_non_fqdn_recipient, # don't accept misconfigured recipients reject_unknown_recipient_domain, # Reject the request unless one of the following is true: # # - Postfix is mail forwarder: the resolved RCPT TO domain matches \$relay_domains # or a subdomain thereof, and contains no sender-specified routing (user@elsewhere@domain), # # - Postfix is the final destination: the resolved RCPT TO domain matches # \$mydestination, \$inet_interfaces, \$proxy_interfaces, \$virtual_alias_domains, # or \$virtual_mailbox_domains, and contains no sender-specified routing (user@elsewhere@domain). reject_unauth_destination, # Reject the request when mail to the RCPT TO address is known to bounce, or when the # recipient address destination is not reachable. Address verification information is # managed by the verify(8) server; see http://www.postfix.org/ADDRESS_VERIFICATION_README.html # for more details reject_unverified_recipient, # permit Backup MX permit_mx_backup, # permit, if all restrictions so far passed permit ## --- ## - smtpd DATA Restrictions ## --- smtpd_data_restrictions = # Block clients that speak too early. # reject_unauth_pipelining smtpd_end_of_data_restrictions = # Check Postfix Firewall Daemon # check_policy_service inet:127.0.0.1:10040 EOF echo_ok ## - /etc/mailname ## - echononl " Set \"/etc/mailname\"" echo $HOSTNAME > /etc/mailname if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi ## - /etc/aliases ## - echononl " Backup existing file '/etc/aliases'" if [[ -f /etc/aliases ]] ; then mv /etc/aliases "/etc/aliases.$backup_date" > $tmp_err_msg 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else echo_skipped fi echononl " Adjust \"/etc/aliases\"" cat << EOF > /etc/aliases # See man 5 aliases for format mailer-daemon: postmaster postmaster: root nobody: root hostmaster: root usenet: root news: root webmaster: root www: root ftp: root abuse: root noc: root security: root do-not-reply: /dev/null root: $ADMIN_EMAIL EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi ## - create directory for certificates and copy certificates ## - and coresponding keys to /etc/postfix/ssl/ ## - echononl " Create directory for certificates \"/etc/postfix/ssl\"" if [[ -d "/etc/postfix/ssl" ]] ; then echo_skipped else mkdir -p /etc/postfix/ssl if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi fi ## - generate DH parameters that the Postfix SMTP server should use ## - with EDH ciphers (length 512 and 1024 ## - echononl " Generate DH key length=512 \"/etc/postfix/ssl/dh_512.pem\"" if [ ! -f /etc/postfix/ssl/dh_512.pem ]; then #openssl dhparam -out /etc/postfix/ssl/dh_512.pem -2 512 > /dev/null 2>&1 openssl dhparam -dsaparam -out /etc/postfix/ssl/dh_512.pem 512 > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi echononl " Generate DH key length=1024 \"/etc/postfix/ssl/dh_1024.pem\"" if [ ! -f /etc/postfix/ssl/dh_1024.pem ]; then #openssl dhparam -out /etc/postfix/ssl/dh_1024.pem -2 1024 > /dev/null 2>&1 openssl dhparam -dsaparam -out /etc/postfix/ssl/dh_1024.pem 1024 > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi echononl " Generate DH key length=2048 \"/etc/postfix/ssl/dh_2048.pem\"" if [ ! -f /etc/postfix/ssl/dh_2048.pem ]; then #openssl dhparam -out /etc/postfix/ssl/dh_2048.pem -2 2048 > /dev/null 2>&1 openssl dhparam -dsaparam -out /etc/postfix/ssl/dh_2048.pem 2048 > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi echononl " Create Symlink \"$_TLS_CERT_FILE\"" if [ ! -h "$_TLS_CERT_FILE" ]; then ln -s /etc/ssl/certs/ssl-cert-snakeoil.pem $_TLS_CERT_FILE if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi echononl " Create Symlink \"$_TLS_KEY_FILE\"" if [ ! -h "$_TLS_KEY_FILE" ]; then ln -s /etc/ssl/private/ssl-cert-snakeoil.key $_TLS_KEY_FILE if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi ## - rebuld alias database ## - echononl " Rebuld alias database" newaliases > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi ## - create files ## - echononl " Create file \"access_recipient-rfc\"" if [[ ! -f /etc/postfix/access_recipient-rfc ]]; then cat < /etc/postfix/access_recipient-rfc # if destination is ok, permit /^postmaster\@/ permit_auth_destination /^abuse\@/ permit_auth_destination EOF fi postmap btree:/etc/postfix/access_recipient-rfc if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi ## - Notice: ## - The access_sender list can also be used as white list: ## - backup@b3-bornim.de OK ## - backup_file-ah@oopen.de OK ## - backup_file-spr@oopen.de OK ## - root_file_spr@oopen.de OK ## - backup_anw-urban@oopen.de OK ## - anonymous@bbb-server.b3-bornim.de OK echononl " Create file \"access_sender\"" if [[ ! -f /etc/postfix/access_sender ]]; then cat < /etc/postfix/access_sender # - bekannte Virus/Spam Absener blocken # - # annoying spammer domains acieu.co.uk REJECT # annoying spammer addresses error@mailfrom.com REJECT EOF fi postmap btree:/etc/postfix/access_sender if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi echononl " Create file \"access_recipient\"" if [[ ! -f /etc/postfix/access_recipient ]]; then touch /etc/postfix/access_recipient fi postmap btree:/etc/postfix/access_recipient if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi echononl " Create file \"client_whitelist\"" if [[ ! -f "/etc/postfix/client_whitelist" ]]; then cat < /etc/postfix/client_whitelist # onion - tor hidden service 127.0.0.25 OK EOF fi postmap btree:/etc/postfix/client_whitelist if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi echononl " Create file \"sender_canonical\"" if [[ ! -f /etc/postfix/sender_canonical ]]; then cat < /etc/postfix/sender_canonical @localhost @$(hostname -f) EOF fi postmap btree:/etc/postfix/sender_canonical if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi echononl " Create file \"transport\"" if [[ ! -f /etc/postfix/transport ]]; then cat < /etc/postfix/transport # - Force sending through IPv4 # - # - Take care your master.cf file (/etc/postfix/master.cf) contains: # - # - smtp-ipv4-only unix - - n - - smtp # - -o inet_protocols=ipv4 # - #example.com smtp-ipv4-only: # - Force sending through IPv6 # - # - Take care your master.cf file (/etc/postfix/master.cf) contains: # - # - smtp-ipv6-only unix - - n - - smtp # - -o inet_protocols=ipv6 # - #example.net smtp-ipv6-only: EOF fi postmap btree:/etc/postfix/transport if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi echononl " Create file \"relay_domains\"" if [[ ! -f /etc/postfix/relay_domains ]] ; then touch /etc/postfix/relay_domains fi postmap btree:/etc/postfix/relay_domains if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi echononl " Create file \"greylist_client_access_pcre\"" if [[ ! -f /etc/postfix/greylist_client_access_pcre ]]; then cat < /etc/postfix/greylist_client_access_pcre # --- # Check Client Access for greylisting (selective greylisting) # --- # # - Note: # - # - Action 'check_greylist' must be defined by 'smtpd_restriction_classes' # - and also set with an action (check_policy_service inet:127.0.0.1:10023) # - in file /etc/postfix/ main.cf. # - # - Your main.cf may looks like: # - # - smtpd_restriction_classes = check_greylist # - check_greylist = check_policy_service inet:127.0.0.1:10023 # - # - smtpd_recipient_restrictions = # - ... # - check_client_access pcre:/etc/postfix/greylist_client_access_pcre, # - ... # - # - smtpd_relay_restrictions = # - ... # - check_client_access pcre:/etc/postfix/greylist_client_access_pcre, # - ... # --- # - For clients matching the following rules greylisting check is applied. # --- # unkown clients /^unknown$/ check_greylist # everything with 3 or more hyphens in the hostname /(\\-.+){3}$/ check_greylist # everything with 4 or more dots in the hostname /(\\..+){4}$/ check_greylist # dialups /(^|[0-9.x_-])(abo|br(e|oa)dband|cabel|(hk)?cablep?|catv|cbl|cidr|d?client2?|cust(omer)?s?|dhcp|dial?(in|up)?|d[iu]p|[asx]?dsld?|dyn(a(dsl|mic)?)?|home|in-addr|modem(cable)?|(di)?pool|ppp|ptr|rev|static|user|YahooBB[0-9]{12}|c[[:alnum:]]{6,}(\\.[a-z]{3})?\\.virtua|[1-9]Cust[0-9]+|AC[A-Z][0-9A-F]{5}\\.ipt|pcp[0-9]{6,}pcs|S0106[[:alnum:]]{12,}\\.[a-z]{2})[0-9.x_-]/ check_greylist EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi _file="/etc/postfix/header_checks.pcre" echononl " Create file '$_file' used for header replacing" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # - Replace headers # --- # - Replace recieved from #/^Received: from (.* \\([-._[:alnum:]]+ \\[[.[:digit:]]{7,15}\\]\\)).*?([[:space:]]+).*\\(Authenticated sender: ([^)]+)\\)(.*)/ REPLACE Received: from [127.0.0.1] (localhost [127.0.0.1])\$2(Authenticated sender: \$3)\$4 # --- # - Ignore Headers # --- #/^\s*User-Agent/ IGNORE #/^\s*X-Enigmail/ IGNORE #/^\s*X-Mailer/ IGNORE #/^\s*X-Originating-IP/ IGNORE # --- # - Reject / Discard headers # --- /^To:.*<>/ REJECT Possible SPAM Blank email address To: header - Header-Spamschutzregel T0-1001 /\(envelope-from <>\)/ REJECT Possible SPAM - Header-Spamschutzregel RECIEV-1001 /^Reply-To: .+\@inx1and1\..+/ REJECT Possible SPAM - Header-Spamschutzregel REPLY-1001 /^Reply-To: .+\@ppe-healthcare-europe\..+/ REJECT Possible SPAM - Header-Spamschutzregel REPLY-1002 /^Reply-To: .+\@testbedarf.shop/ REJECT Possible SPAM - Header-Spamschutzregel REPLY-1003 /^Reply-To: .+\@acieu\..+/ REJECT Possible SPAM - Header-Spamschutzregel REPLY-1004 /^Reply-To: .+\@acievents\..+/ REJECT Possible SPAM - Header-Spamschutzregel REPLY-1005 /^Reply-To: .+\@dokpotenz\..+/ REJECT Possible SPAM - Header-Spamschutzregel REPLY-1006 /^Reply-To: .+\@doktorapo\..+/ REJECT Possible SPAM - Header-Spamschutzregel REPLY-1007 /^Reply-To: .+\@sendelope.eu/ REJECT Possible SPAM - Header-Spamschutzregel REPLY-1008 /^Reply-To: .+\@team-de-luxe\..+/ REJECT Possible SPAM - Header-Spamschutzregel REPLY-1009 /^Reply-To: .+\@klickensiejetzt\..+/ REJECT Possible SPAM - Header-Spamschutzregel REPLY-1010 /^Reply-To: .+\@podiumskate\..+/ REJECT Possible SPAM - Header-Spamschutzregel REPLY-1011 /^From:.*<>/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1001 /^From: .+\@inx1and1\..+/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1002 /^From: .+\@ppe-healthcare-europe\..+/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1003 /^From: .+\@testbedarf.shop/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1004 /^From: .+\@acieu\..+/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1005 /^From: .+\@acievents\..+/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1006 /^From: .+\@dokpotenz\..+/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1007 /^From: .+\@doktorapo\..+/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1008 /^From: .+\@sendelope.eu/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1009 /^From: .+\@team-de-luxe\..+/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1010 /^From: .+\@klickensiejetzt\..+/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1011 /^From: .+\@podiumskate\..+/ REJECT Possible SPAM - Header-Spamschutzregel FROM-1012 /^Date: .* 19[0-9][0-9]/ REJECT Date from the past. Fix your system clock. - Header-Spamschutzregel DATE-1001 /^Date: .* 200[0-9]/ REJECT Date from the past. Fix your system clock. - Header-Spamschutzregel DATE-1002 /^Date: .* 201[0-9]/ REJECT Date from the past. Fix your system clock. - Header-Spamschutzregel DATE-1003 /^Date: .* 2020/ REJECT Date from the past. Fix your system clock. - Header-Spamschutzregel DATE-1004 EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi _file="/etc/postfix/mime_header_check.pcre" echononl " Create file '$_file' used for header replacing" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # - MIME-Header Checks # --- /name=[^>]*\.exe/ REJECT No .exe files allowed - Mime--Spamschutzregel EXE-1001 /name=[^>]*\.bat/ REJECT No .bat files allowed - Mime--Spamschutzregel BAT-1002 /name=[^>](screensaver|movie)\.zip/ REJECT Sobig Virus found - Mime-Spamschutzregel VIR-1003 EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi _file="/etc/postfix/body_check.pcre" echononl " Create file '$_file' used for header replacing" if [[ ! -f "$_file" ]]; then cat << EOF > "$_file" # --- # - Body Checks # --- /See the attached file for details/ REJECT Sobig Virus found. - Body-Spamschutzregel TEXT-1001 /.*https?:\/\/click2eat.shop\/Installer\/updatedwebmails/ REJECT Maype fishing E-Mail credentials - Body-Spamschutzregel TEXT-1002 EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi if ! $IS_RELAY_HOST ; then ## - Create Directory '/var/vmail' for virtual mailboxes ## - echononl " Create directory '/var/vmail'" if [[ ! -d "/var/vmail" ]]; then mkdir /var/vmail > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi ## - Create user (vmail) for virtual mailboxes ## - echononl " Create user 'vmail' for virtual mailboxes" if id -u vmail > /dev/null 2>&1; then echo_skipped else useradd -s /bin/false -d /var/vmail -M -u 5000 vmail > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi fi ## - Change ownership 'vmail:vmail' for dir '/var/vmail' ## - echononl " Change ownership 'vmail:vmail' for dir '/var/vmail'" chown vmail:vmail /var/vmail > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi ## - Change permissions for dir '/var/vmail' ## - echononl " Change permissions for dir '/var/vmail'" chmod 700 /var/vmail > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else if [[ "$SASL_AUTH_ENABLED" = "yes" ]]; then echononl " Create directory '/etc/postfix/sasl'.." if [[ ! -d "/etc/postfix/sasl" ]] ; then mkdir "/etc/postfix/sasl" > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else echo_skipped fi echononl " Backup existing file '/etc/postfix/sasl/smtpd.conf'" if [[ -f /etc/postfix/sasl/smtpd.conf ]] ; then mv /etc/postfix/sasl/smtpd.conf "/etc/postfix/sasl/smtpd.conf.$backup_date" > $tmp_err_msg 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi else echo_skipped fi echononl " Create file '/etc/postfix/sasl/smtpd.conf'.." cat < /etc/postfix/sasl/smtpd.conf # - Take care only using provided login mechanisms. You can check this, by # - running command # - # - saslpluginviewer -x AUXPROP_MECHS # - pwcheck_method: auxprop auxprop_plugin: sasldb mech_list: PLAIN LOGIN CRAM-MD5 DIGEST-MD5 NTLM EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi fi fi ## - /etc/postfix/master.cf ## - ## - Create Listener for user authenticated smtp connection port 587 (submission) ## - and port 465 (smtps) ## - echononl " Backup file \"${postfix_master_cf}\"" cp -a $postfix_master_cf "${postfix_master_cf}.$backup_date" > /dev/null 2> $tmp_err_msg if [[ $? -eq 0 ]] ; then echo_ok else echo_failed error "$(cat $tmp_err_msg)" fi if grep -iq -E "^submission\s+" $postfix_master_cf > /dev/null 2>&1 ; then submission_present=true else submission_present=false fi if grep -iq -E "^smtps\s+" $postfix_master_cf > /dev/null 2>&1 ; then smtps_present=true else smtps_present=false fi _found=false echononl " Create new file \"${postfix_master_cf}\"" if [[ -f "${postfix_master_cf}.$backup_date" ]]; then > $postfix_master_cf while IFS='' read -r _line || [[ -n $_line ]] ; do if echo "$_line" | grep -i -E "^\s*smtp\s+inet\s+" > /dev/null 2>&1 ; then _found=true cat >> $postfix_master_cf << EOF smtp inet n - y - - smtpd EOF if ! $IS_RELAY_HOST ; then if ! $submission_present ; then cat >> $postfix_master_cf << EOF submission inet n - y - 20 smtpd -o smtpd_tls_security_level=encrypt -o smtpd_sasl_auth_enable=yes -o smtpd_client_restrictions=permit_sasl_authenticated,reject #-o milter_macro_daemon_name=ORIGINATING EOF fi if ! $smtps_present ; then cat >> $postfix_master_cf << EOF smtps inet n - y - - smtpd -o smtpd_tls_wrappermode=yes -o smtpd_sasl_auth_enable=yes -o smtpd_client_restrictions=permit_sasl_authenticated,reject #-o milter_macro_daemon_name=ORIGINATING EOF fi fi continue fi if $submission_present && echo "$_line" | grep -iq -E "^submission\s+" 2> /dev/null ; then _found=true if ! $IS_RELAY_HOST ; then cat >> $postfix_master_cf << EOF submission inet n - y - 20 smtpd -o smtpd_tls_security_level=encrypt -o smtpd_sasl_auth_enable=yes -o smtpd_client_restrictions=permit_sasl_authenticated,reject # -o milter_macro_daemon_name=ORIGINATING EOF fi continue fi if $smtps_present && echo "$_line" | grep -iq -E "^smtps\s+" 2> /dev/null ; then _found=true if ! $IS_RELAY_HOST ; then cat >> $postfix_master_cf << EOF smtps inet n - y - - smtpd -o smtpd_tls_wrappermode=yes -o smtpd_sasl_auth_enable=yes -o smtpd_client_restrictions=permit_sasl_authenticated,reject # -o milter_macro_daemon_name=ORIGINATING EOF fi continue fi # - [[:blank:]] means space and tab. This makes it similar to: [ \t] # - [[:space;]] in addition to space and tab, includes newline, linefeed, formfeed, # - and vertical tab. This makes it similar to: [ \t\n\r\f\v] # - #if [[ $_line =~ ^[[:space:]]+[^[:space:]]+ ]] && $_smtp_found ; then # - if [[ $_line =~ ^[[:blank:]]+[^[:space:]]+ ]] && $_found ; then continue fi _found=false echo "$_line" >> $postfix_master_cf done < "${postfix_master_cf}.$backup_date" # - Add transport definitions for only sending over IPv4/IPv6 # - if ! $(grep -iq -E "^smtp-ipv4-only\s+" "$postfix_master_cf" 2> /dev/null) ; then cat <> $postfix_master_cf smtp-ipv4-only unix - - n - - smtp -o inet_protocols=ipv4 EOF fi if ! $(grep -iq -E "^smtp-ipv6-only\s+" "$postfix_master_cf" 2> /dev/null) ; then cat <> $postfix_master_cf smtp-ipv6-only unix - - n - - smtp -o inet_protocols=ipv6 EOF fi echo_done warn "Please check file \"$postfix_master_cf\" !" else echo_failed error "File \"${postfix_master_cf}.$backup_date\" not found!" fi ## - restart postfix ## - echononl " Restart postfix" if $systemd_exists ; then systemctl restart postfix > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else /etc/init.d/postfix restart > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi fi ## - Omitt logging into system.log ## - echononl " Create \"/etc/rsyslog.d/postfix.conf\"" cat << EOF >> /etc/rsyslog.d/postfix.conf # # Logging for the mail system. Split it up so that # it is easy to write scripts to parse these files. # mail.info -/var/log/mail.info mail.warn -/var/log/mail.warn mail.err /var/log/mail.err mail.* -/var/log/mail.log & ~ EOF if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi echononl " Restart rsyslog daemon" if $systemd_exists ; then systemctl restart rsyslog > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi else /etc/init.d/rsyslog restart > /dev/null 2>&1 if [[ $? -eq 0 ]] ; then echo_ok else echo_failed fi fi rm $tmp_err_msg echo "" clean_up 0