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docker-mailserver/target/start-mailserver.sh

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#!/bin/bash
# version 0.2.0
#
# Starts the mailserver.
##########################################################################
# >> DEFAULT VARS
#
# add them here.
# Example: DEFAULT_VARS["KEY"]="VALUE"
##########################################################################
declare -A DEFAULT_VARS
DEFAULT_VARS["ENABLE_CLAMAV"]="${ENABLE_CLAMAV:=0}"
DEFAULT_VARS["ENABLE_SPAMASSASSIN"]="${ENABLE_SPAMASSASSIN:=0}"
DEFAULT_VARS["ENABLE_POP3"]="${ENABLE_POP3:=0}"
DEFAULT_VARS["ENABLE_FAIL2BAN"]="${ENABLE_FAIL2BAN:=0}"
DEFAULT_VARS["ENABLE_MANAGESIEVE"]="${ENABLE_MANAGESIEVE:=0}"
DEFAULT_VARS["ENABLE_FETCHMAIL"]="${ENABLE_FETCHMAIL:=0}"
DEFAULT_VARS["FETCHMAIL_POLL"]="${FETCHMAIL_POLL:=300}"
DEFAULT_VARS["ENABLE_LDAP"]="${ENABLE_LDAP:=0}"
DEFAULT_VARS["ENABLE_QUOTAS"]="${ENABLE_QUOTAS:=1}"
DEFAULT_VARS["LDAP_START_TLS"]="${LDAP_START_TLS:="no"}"
DEFAULT_VARS["DOVECOT_TLS"]="${DOVECOT_TLS:="no"}"
DEFAULT_VARS["DOVECOT_MAILBOX_FORMAT"]="${DOVECOT_MAILBOX_FORMAT:="maildir"}"
DEFAULT_VARS["ENABLE_POSTGREY"]="${ENABLE_POSTGREY:=0}"
DEFAULT_VARS["POSTGREY_DELAY"]="${POSTGREY_DELAY:=300}"
DEFAULT_VARS["POSTGREY_MAX_AGE"]="${POSTGREY_MAX_AGE:=35}"
DEFAULT_VARS["POSTGREY_AUTO_WHITELIST_CLIENTS"]="${POSTGREY_AUTO_WHITELIST_CLIENTS:=5}"
DEFAULT_VARS["POSTGREY_TEXT"]="${POSTGREY_TEXT:="Delayed by postgrey"}"
DEFAULT_VARS["POSTFIX_MESSAGE_SIZE_LIMIT"]="${POSTFIX_MESSAGE_SIZE_LIMIT:=10240000}" # ~10 MB by default
DEFAULT_VARS["POSTFIX_MAILBOX_SIZE_LIMIT"]="${POSTFIX_MAILBOX_SIZE_LIMIT:=0}" # no limit by default
DEFAULT_VARS["POSTFIX_INET_PROTOCOLS"]="${POSTFIX_INET_PROTOCOLS:="all"}"
DEFAULT_VARS["ENABLE_SASLAUTHD"]="${ENABLE_SASLAUTHD:=0}"
DEFAULT_VARS["SMTP_ONLY"]="${SMTP_ONLY:=0}"
DEFAULT_VARS["OVERRIDE_HOSTNAME"]="${OVERRIDE_HOSTNAME}"
DEFAULT_VARS["POSTSCREEN_ACTION"]="${POSTSCREEN_ACTION:="enforce"}"
DEFAULT_VARS["SPOOF_PROTECTION"]="${SPOOF_PROTECTION:=0}"
DEFAULT_VARS["TLS_LEVEL"]="${TLS_LEVEL:="modern"}"
DEFAULT_VARS["ENABLE_SRS"]="${ENABLE_SRS:=0}"
DEFAULT_VARS["SRS_SENDER_CLASSES"]="${SRS_SENDER_CLASSES:="envelope_sender"}"
DEFAULT_VARS["REPORT_RECIPIENT"]="${REPORT_RECIPIENT:=0}"
DEFAULT_VARS["LOGROTATE_INTERVAL"]="${LOGROTATE_INTERVAL:=${REPORT_INTERVAL:-"daily"}}"
DEFAULT_VARS["LOGWATCH_INTERVAL"]="${LOGWATCH_INTERVAL:="none"}"
DEFAULT_VARS["EXPLICITLY_DEFINED_SPAMASSASSIN_SPAM_TO_INBOX"]="$( [ -z "${SPAMASSASSIN_SPAM_TO_INBOX}" ] && echo "0" || echo "1" )" # used for backward compatibility
DEFAULT_VARS["SPAMASSASSIN_SPAM_TO_INBOX"]="${SPAMASSASSIN_SPAM_TO_INBOX:=0}"
DEFAULT_VARS["MOVE_SPAM_TO_JUNK"]="${MOVE_SPAM_TO_JUNK:=1}"
DEFAULT_VARS["VIRUSMAILS_DELETE_DELAY"]="${VIRUSMAILS_DELETE_DELAY:=7}"
DEFAULT_VARS["NETWORK_INTERFACE"]="${NETWORK_INTERFACE:="eth0"}"
# DEFAULT_VARS["DMS_DEBUG"] defined in helper_functions.sh
##########################################################################
# << DEFAULT VARS
##########################################################################
##########################################################################
# >> GLOBAL VARS
#
# add your global script variables here.
#
# Example: KEY="VALUE"
##########################################################################
HOSTNAME="$(hostname -f)"
DOMAINNAME="$(hostname -d)"
CHKSUM_FILE=/tmp/docker-mailserver-config-chksum
##########################################################################
# << GLOBAL VARS
##########################################################################
##########################################################################
# >> REGISTER FUNCTIONS
#
# add your new functions/methods here.
#
# NOTE: position matters when registering a function in stacks. First in First out
# Execution Logic:
# > check functions
# > setup functions
# > fix functions
# > misc functions
# > start-daemons
#
# Example:
# if [[ CONDITION IS MET ]]
# then
# _register_{setup,fix,check,start}_{functions,daemons} "$FUNCNAME"
# fi
#
# Implement them in the section-group: {check,setup,fix,start}
##########################################################################
function register_functions
{
_notify 'taskgrp' 'Initializing setup'
_notify 'task' 'Registering check,setup,fix,misc and start-daemons functions'
################### >> check funcs
_register_check_function "_check_environment_variables"
_register_check_function "_check_hostname"
################### << check funcs
################### >> setup funcs
_register_setup_function "_setup_default_vars"
_register_setup_function "_setup_file_permissions"
if [[ ${SMTP_ONLY} -ne 1 ]]
then
_register_setup_function "_setup_dovecot"
_register_setup_function "_setup_dovecot_dhparam"
_register_setup_function "_setup_dovecot_quota"
_register_setup_function "_setup_dovecot_local_user"
fi
[[ ${ENABLE_LDAP} -eq 1 ]] && _register_setup_function "_setup_ldap"
[[ ${ENABLE_SASLAUTHD} -eq 1 ]] && _register_setup_function "_setup_saslauthd"
[[ ${ENABLE_POSTGREY} -eq 1 ]] && _register_setup_function "_setup_postgrey"
_register_setup_function "_setup_dkim"
_register_setup_function "_setup_ssl"
[[ ${POSTFIX_INET_PROTOCOLS} != "all" ]] && _register_setup_function "_setup_inet_protocols"
_register_setup_function "_setup_docker_permit"
_register_setup_function "_setup_mailname"
_register_setup_function "_setup_amavis"
_register_setup_function "_setup_dmarc_hostname"
_register_setup_function "_setup_postfix_hostname"
_register_setup_function "_setup_dovecot_hostname"
_register_setup_function "_setup_postfix_smtputf8"
_register_setup_function "_setup_postfix_sasl"
_register_setup_function "_setup_postfix_sasl_password"
_register_setup_function "_setup_security_stack"
_register_setup_function "_setup_postfix_aliases"
_register_setup_function "_setup_postfix_vhost"
_register_setup_function "_setup_postfix_dhparam"
_register_setup_function "_setup_postfix_postscreen"
_register_setup_function "_setup_postfix_sizelimits"
[[ ${SPOOF_PROTECTION} -eq 1 ]] && _register_setup_function "_setup_spoof_protection"
if [[ ${ENABLE_SRS} -eq 1 ]]
then
_register_setup_function "_setup_SRS"
_register_start_daemon "_start_daemons_postsrsd"
fi
_register_setup_function "_setup_postfix_access_control"
if [[ -n ${AWS_SES_HOST} ]] && [[ -n ${AWS_SES_USERPASS} ]]
then
_register_setup_function "_setup_postfix_relay_hosts"
fi
[[ -n ${DEFAULT_RELAY_HOST} ]] && _register_setup_function "_setup_postfix_default_relay_host"
[[ -n ${RELAY_HOST} ]] && _register_setup_function "_setup_postfix_relay_hosts"
[[ ${ENABLE_POSTFIX_VIRTUAL_TRANSPORT} -eq 1 ]] && _register_setup_function "_setup_postfix_virtual_transport"
_register_setup_function "_setup_postfix_override_configuration"
_register_setup_function "_setup_environment"
_register_setup_function "_setup_logrotate"
[[ ${PFLOGSUMM_TRIGGER} != "none" ]] && _register_setup_function "_setup_mail_summary"
[[ ${LOGWATCH_TRIGGER} != "none" ]] && _register_setup_function "_setup_logwatch"
_register_setup_function "_setup_user_patches"
# Compute last as the config files are modified in-place
_register_setup_function "_setup_chksum_file"
################### << setup funcs
################### >> fix funcs
_register_fix_function "_fix_var_mail_permissions"
_register_fix_function "_fix_var_amavis_permissions"
[[ ${ENABLE_CLAMAV} -eq 0 ]] && _register_fix_function "_fix_cleanup_clamav"
[[ ${ENABLE_SPAMASSASSIN} -eq 0 ]] && _register_fix_function "_fix_cleanup_spamassassin"
################### << fix funcs
################### >> misc funcs
_register_misc_function "_misc_save_states"
################### << misc funcs
################### >> daemon funcs
_register_start_daemon "_start_daemons_cron"
_register_start_daemon "_start_daemons_rsyslog"
[[ ${SMTP_ONLY} -ne 1 ]] && _register_start_daemon "_start_daemons_dovecot"
# needs to be started before saslauthd
_register_start_daemon "_start_daemons_opendkim"
_register_start_daemon "_start_daemons_opendmarc"
#postfix uses postgrey, needs to be started before postfix
[[ ${ENABLE_POSTGREY} -eq 1 ]] && _register_start_daemon "_start_daemons_postgrey"
_register_start_daemon "_start_daemons_postfix"
[[ ${ENABLE_SASLAUTHD} -eq 1 ]] && _register_start_daemon "_start_daemons_saslauthd"
[[ ${ENABLE_FAIL2BAN} -eq 1 ]] && _register_start_daemon "_start_daemons_fail2ban" # care :: needs to run after postfix
[[ ${ENABLE_FETCHMAIL} -eq 1 ]] && _register_start_daemon "_start_daemons_fetchmail"
[[ ${ENABLE_CLAMAV} -eq 1 ]] && _register_start_daemon "_start_daemons_clamav"
[[ ${ENABLE_LDAP} -eq 0 ]] && _register_start_daemon "_start_changedetector"
_register_start_daemon "_start_daemons_amavis"
################### << daemon funcs
}
##########################################################################
# << REGISTER FUNCTIONS
##########################################################################
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# ! CARE --> DON'T CHANGE, unless you exactly know what you are doing
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
##########################################################################
# >> CONSTANTS
##########################################################################
declare -a FUNCS_SETUP
declare -a FUNCS_FIX
declare -a FUNCS_CHECK
declare -a FUNCS_MISC
declare -a DAEMONS_START
# declare -A HELPERS_EXEC_STATE
##########################################################################
# << CONSTANTS
##########################################################################
##########################################################################
# >> protected register_functions
##########################################################################
function _register_start_daemon
{
DAEMONS_START+=("${1}")
_notify 'inf' "${1}() registered"
}
function _register_setup_function
{
FUNCS_SETUP+=("${1}")
_notify 'inf' "${1}() registered"
}
function _register_fix_function
{
FUNCS_FIX+=("${1}")
_notify 'inf' "${1}() registered"
}
function _register_check_function
{
FUNCS_CHECK+=("${1}")
_notify 'inf' "${1}() registered"
}
function _register_misc_function
{
FUNCS_MISC+=("${1}")
_notify 'inf' "${1}() registered"
}
##########################################################################
# << protected register_functions
##########################################################################
function _defunc
{
_notify 'fatal' "Please fix your configuration. Exiting..."
exit 1
}
function display_startup_daemon
{
${1} &>/dev/null
local RES=${?}
if [[ ${DEFAULT_VARS["DMS_DEBUG"]} -eq 1 ]]
then
if [[ ${RES} -eq 0 ]]
then
_notify 'started' " [ OK ]"
else
echo "false"
_notify 'err' " [ FAILED ]"
fi
fi
return "${RES}"
}
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# ! CARE --> DON'T CHANGE, except you know exactly what you are doing
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
##########################################################################
# >> Check Stack
#
# Description: Place functions for initial check of container sanity
##########################################################################
function check
{
_notify 'taskgrp' 'Checking configuration'
for FUNC in "${FUNCS_CHECK[@]}"
do
if ! ${FUNC}
then
_defunc
fi
done
}
function _check_hostname
{
_notify "task" "Check that hostname/domainname is provided or overridden (no default docker hostname/kubernetes) [in ${FUNCNAME[0]}]"
if [[ -n ${DEFAULT_VARS["OVERRIDE_HOSTNAME"]} ]]
then
export HOSTNAME=${DEFAULT_VARS["OVERRIDE_HOSTNAME"]}
export DOMAINNAME="${HOSTNAME#*.}"
fi
_notify 'inf' "Domain has been set to ${DOMAINNAME}"
_notify 'inf' "Hostname has been set to ${HOSTNAME}"
if ( ! echo "${HOSTNAME}" | grep -E '^(\S+[.]\S+)$' > /dev/null )
then
_notify 'err' "Setting hostname/domainname is required"
kill "$(< /var/run/supervisord.pid)" && return 1
else
return 0
fi
}
function _check_environment_variables
{
_notify "task" "Check that there are no conflicts with env variables [in ${FUNCNAME[0]}]"
return 0
}
##########################################################################
# << Check Stack
##########################################################################
##########################################################################
# >> Setup Stack
#
# Description: Place functions for functional configurations here
##########################################################################
function setup
{
_notify 'taskgrp' 'Configuring mail server'
for FUNC in "${FUNCS_SETUP[@]}"
do
${FUNC}
done
}
function _setup_default_vars
{
_notify 'task' "Setting up default variables [in ${FUNCNAME[0]}]"
# update POSTMASTER_ADDRESS - must be done done after _check_hostname
DEFAULT_VARS["POSTMASTER_ADDRESS"]="${POSTMASTER_ADDRESS:=postmaster@${DOMAINNAME}}"
# update REPORT_SENDER - must be done done after _check_hostname
DEFAULT_VARS["REPORT_SENDER"]="${REPORT_SENDER:=mailserver-report@${HOSTNAME}}"
DEFAULT_VARS["PFLOGSUMM_SENDER"]="${PFLOGSUMM_SENDER:=${REPORT_SENDER}}"
# set PFLOGSUMM_TRIGGER here for backwards compatibility
# when REPORT_RECIPIENT is on the old method should be used
if [[ "${REPORT_RECIPIENT}" == "0" ]]
then
DEFAULT_VARS["PFLOGSUMM_TRIGGER"]="${PFLOGSUMM_TRIGGER:="none"}"
else
DEFAULT_VARS["PFLOGSUMM_TRIGGER"]="${PFLOGSUMM_TRIGGER:="logrotate"}"
fi
# expand address to simplify the rest of the script
if [[ "${REPORT_RECIPIENT}" == "0" ]] || [[ "${REPORT_RECIPIENT}" == "1" ]]
then
REPORT_RECIPIENT="${POSTMASTER_ADDRESS}"
DEFAULT_VARS["REPORT_RECIPIENT"]="${REPORT_RECIPIENT}"
fi
DEFAULT_VARS["PFLOGSUMM_RECIPIENT"]="${PFLOGSUMM_RECIPIENT:=${REPORT_RECIPIENT}}"
DEFAULT_VARS["LOGWATCH_RECIPIENT"]="${LOGWATCH_RECIPIENT:=${REPORT_RECIPIENT}}"
for var in "${!DEFAULT_VARS[@]}"
do
if ! echo "export ${var}=\"${DEFAULT_VARS[${var}]}\"" >>/root/.bashrc
then
_notify 'err' "Unable to set ${var}=${DEFAULT_VARS[${var}]}"
kill -15 "$(< /var/run/supervisord.pid)"
return 1
fi
_notify 'inf' "Set ${var}=${DEFAULT_VARS[${var}]}"
done
}
# File/folder permissions are fine when using docker volumes, but may be wrong
# when file system folders are mounted into the container.
# Set the expected values and create missing folders/files just in case.
function _setup_file_permissions
{
_notify 'task' "Setting file/folder permissions"
mkdir -p /var/log/supervisor
mkdir -p /var/log/mail
chown syslog:root /var/log/mail
touch /var/log/mail/clamav.log
chown clamav:adm /var/log/mail/clamav.log
chmod 640 /var/log/mail/clamav.log
touch /var/log/mail/freshclam.log
chown clamav:adm /var/log/mail/freshclam.log
chmod 640 /var/log/mail/freshclam.log
}
function _setup_chksum_file
{
_notify 'task' "Setting up configuration checksum file"
if [[ -d /tmp/docker-mailserver ]]
then
_notify 'inf' "Creating ${CHKSUM_FILE}"
_monitored_files_checksums >"${CHKSUM_FILE}"
else
# We could just skip the file, but perhaps config can be added later?
# If so it must be processed by the check for changes script
_notify 'inf' "Creating empty ${CHKSUM_FILE} (no config)"
touch "${CHKSUM_FILE}"
fi
}
function _setup_mailname
{
_notify 'task' 'Setting up Mailname'
_notify 'inf' "Creating /etc/mailname"
echo "${DOMAINNAME}" > /etc/mailname
}
function _setup_amavis
{
_notify 'task' 'Setting up Amavis'
_notify 'inf' "Applying hostname to /etc/amavis/conf.d/05-node_id"
# shellcheck disable=SC2016
sed -i 's/^#\$myhostname = "mail.example.com";/\$myhostname = "'"${HOSTNAME}"'";/' /etc/amavis/conf.d/05-node_id
}
function _setup_dmarc_hostname
{
_notify 'task' 'Setting up dmarc'
_notify 'inf' "Applying hostname to /etc/opendmarc.conf"
sed -i -e 's/^AuthservID.*$/AuthservID '"${HOSTNAME}"'/g' \
-e 's/^TrustedAuthservIDs.*$/TrustedAuthservIDs '"${HOSTNAME}"'/g' /etc/opendmarc.conf
}
function _setup_postfix_hostname
{
_notify 'task' 'Applying hostname and domainname to Postfix'
_notify 'inf' "Applying hostname to /etc/postfix/main.cf"
postconf -e "myhostname = ${HOSTNAME}"
postconf -e "mydomain = ${DOMAINNAME}"
}
function _setup_dovecot_hostname
{
_notify 'task' 'Applying hostname to Dovecot'
_notify 'inf' "Applying hostname to /etc/dovecot/conf.d/15-lda.conf"
sed -i 's/^#hostname =.*$/hostname = '"${HOSTNAME}"'/g' /etc/dovecot/conf.d/15-lda.conf
}
function _setup_dovecot
{
_notify 'task' 'Setting up Dovecot'
# moved from docker file, copy or generate default self-signed cert
if [[ -f /var/mail-state/lib-dovecot/dovecot.pem ]] && [[ ${ONE_DIR} -eq 1 ]]
then
_notify 'inf' "Copying default dovecot cert"
cp /var/mail-state/lib-dovecot/dovecot.key /etc/dovecot/ssl/
cp /var/mail-state/lib-dovecot/dovecot.pem /etc/dovecot/ssl/
fi
if [[ ! -f /etc/dovecot/ssl/dovecot.pem ]]
then
_notify 'inf' "Generating default dovecot cert"
pushd /usr/share/dovecot || return 1
./mkcert.sh
popd || return 1
if [[ ${ONE_DIR} -eq 1 ]]
then
mkdir -p /var/mail-state/lib-dovecot
cp /etc/dovecot/ssl/dovecot.key /var/mail-state/lib-dovecot/
cp /etc/dovecot/ssl/dovecot.pem /var/mail-state/lib-dovecot/
fi
fi
cp -a /usr/share/dovecot/protocols.d /etc/dovecot/
# disable pop3 (it will be eventually enabled later in the script, if requested)
mv /etc/dovecot/protocols.d/pop3d.protocol /etc/dovecot/protocols.d/pop3d.protocol.disab
mv /etc/dovecot/protocols.d/managesieved.protocol /etc/dovecot/protocols.d/managesieved.protocol.disab
sed -i -e 's/#ssl = yes/ssl = yes/g' /etc/dovecot/conf.d/10-master.conf
sed -i -e 's/#port = 993/port = 993/g' /etc/dovecot/conf.d/10-master.conf
sed -i -e 's/#port = 995/port = 995/g' /etc/dovecot/conf.d/10-master.conf
sed -i -e 's/#ssl = yes/ssl = required/g' /etc/dovecot/conf.d/10-ssl.conf
sed -i 's/^postmaster_address = .*$/postmaster_address = '"${POSTMASTER_ADDRESS}"'/g' /etc/dovecot/conf.d/15-lda.conf
# set mail_location according to mailbox format
case "${DOVECOT_MAILBOX_FORMAT}" in
sdbox|mdbox|maildir )
_notify 'inf' "Dovecot ${DOVECOT_MAILBOX_FORMAT} format configured"
sed -i -e 's/^mail_location = .*$/mail_location = '"${DOVECOT_MAILBOX_FORMAT}"':\/var\/mail\/%d\/%n/g' /etc/dovecot/conf.d/10-mail.conf
;;
* )
_notify 'inf' "Dovecot maildir format configured (default)"
sed -i -e 's/^mail_location = .*$/mail_location = maildir:\/var\/mail\/%d\/%n/g' /etc/dovecot/conf.d/10-mail.conf
;;
esac
# enable Managesieve service by setting the symlink
# to the configuration file Dovecot will actually find
if [[ ${ENABLE_MANAGESIEVE} -eq 1 ]]
then
_notify 'inf' "Sieve management enabled"
mv /etc/dovecot/protocols.d/managesieved.protocol.disab /etc/dovecot/protocols.d/managesieved.protocol
fi
# copy pipe and filter programs, if any
rm -f /usr/lib/dovecot/sieve-filter/*
rm -f /usr/lib/dovecot/sieve-pipe/*
[[ -d /tmp/docker-mailserver/sieve-filter ]] && cp /tmp/docker-mailserver/sieve-filter/* /usr/lib/dovecot/sieve-filter/
[[ -d /tmp/docker-mailserver/sieve-pipe ]] && cp /tmp/docker-mailserver/sieve-pipe/* /usr/lib/dovecot/sieve-pipe/
# create global sieve directories
mkdir -p /usr/lib/dovecot/sieve-global/before
mkdir -p /usr/lib/dovecot/sieve-global/after
if [[ -f /tmp/docker-mailserver/before.dovecot.sieve ]]
then
cp /tmp/docker-mailserver/before.dovecot.sieve /usr/lib/dovecot/sieve-global/before/50-before.dovecot.sieve
sievec /usr/lib/dovecot/sieve-global/before/50-before.dovecot.sieve
else
rm -f /usr/lib/dovecot/sieve-global/before/50-before.dovecot.sieve /usr/lib/dovecot/sieve-global/before/50-before.dovecot.svbin
fi
if [[ -f /tmp/docker-mailserver/after.dovecot.sieve ]]
then
cp /tmp/docker-mailserver/after.dovecot.sieve /usr/lib/dovecot/sieve-global/after/50-after.dovecot.sieve
sievec /usr/lib/dovecot/sieve-global/after/50-after.dovecot.sieve
else
rm -f /usr/lib/dovecot/sieve-global/after/50-after.dovecot.sieve /usr/lib/dovecot/sieve-global/after/50-after.dovecot.svbin
fi
# sieve will move spams to .Junk folder when SPAMASSASSIN_SPAM_TO_INBOX=1 and MOVE_SPAM_TO_JUNK=1
if [[ ${SPAMASSASSIN_SPAM_TO_INBOX} -eq 1 ]] && [[ ${MOVE_SPAM_TO_JUNK} -eq 1 ]]
then
_notify 'inf' "Spam messages will be moved to the Junk folder."
cp /etc/dovecot/sieve/before/60-spam.sieve /usr/lib/dovecot/sieve-global/before/
sievec /usr/lib/dovecot/sieve-global/before/60-spam.sieve
else
rm -f /usr/lib/dovecot/sieve-global/before/60-spam.sieve /usr/lib/dovecot/sieve-global/before/60-spam.svbin
fi
chown docker:docker -R /usr/lib/dovecot/sieve*
chmod 550 -R /usr/lib/dovecot/sieve*
chmod -f +x /usr/lib/dovecot/sieve-pipe/*
}
function _setup_dovecot_quota
{
_notify 'task' 'Setting up Dovecot quota'
# Dovecot quota is disabled when using LDAP or SMTP_ONLY or when explicitly disabled.
if [[ ${ENABLE_LDAP} -eq 1 ]] || [[ ${SMTP_ONLY} -eq 1 ]] || [[ ${ENABLE_QUOTAS} -eq 0 ]]
then
# disable dovecot quota in docevot confs
if [[ -f /etc/dovecot/conf.d/90-quota.conf ]]
then
mv /etc/dovecot/conf.d/90-quota.conf /etc/dovecot/conf.d/90-quota.conf.disab
sed -i "s/mail_plugins = \$mail_plugins quota/mail_plugins = \$mail_plugins/g" /etc/dovecot/conf.d/10-mail.conf
sed -i "s/mail_plugins = \$mail_plugins imap_quota/mail_plugins = \$mail_plugins/g" /etc/dovecot/conf.d/20-imap.conf
fi
# disable quota policy check in postfix
sed -i "s/check_policy_service inet:localhost:65265//g" /etc/postfix/main.cf
else
if [[ -f /etc/dovecot/conf.d/90-quota.conf.disab ]]
then
mv /etc/dovecot/conf.d/90-quota.conf.disab /etc/dovecot/conf.d/90-quota.conf
sed -i "s/mail_plugins = \$mail_plugins/mail_plugins = \$mail_plugins quota/g" /etc/dovecot/conf.d/10-mail.conf
sed -i "s/mail_plugins = \$mail_plugin/mail_plugins = \$mail_plugins imap_quota/g" /etc/dovecot/conf.d/20-imap.conf
fi
message_size_limit_mb=$((DEFAULT_VARS["POSTFIX_MESSAGE_SIZE_LIMIT"] / 1000000))
mailbox_limit_mb=$((DEFAULT_VARS["POSTFIX_MAILBOX_SIZE_LIMIT"] / 1000000))
sed -i "s/quota_max_mail_size =.*/quota_max_mail_size = ${message_size_limit_mb}$([[ ${message_size_limit_mb} -eq 0 ]] && echo "" || echo "M")/g" /etc/dovecot/conf.d/90-quota.conf
sed -i "s/quota_rule = \*:storage=.*/quota_rule = *:storage=${mailbox_limit_mb}$([[ ${mailbox_limit_mb} -eq 0 ]] && echo "" || echo "M")/g" /etc/dovecot/conf.d/90-quota.conf
if [[ ! -f /tmp/docker-mailserver/dovecot-quotas.cf ]]
then
_notify 'inf' "'config/docker-mailserver/dovecot-quotas.cf' is not provided. Using default quotas."
echo -n >/tmp/docker-mailserver/dovecot-quotas.cf
fi
# enable quota policy check in postfix
sed -i "s/reject_unknown_recipient_domain, reject_rbl_client zen.spamhaus.org/reject_unknown_recipient_domain, check_policy_service inet:localhost:65265, reject_rbl_client zen.spamhaus.org/g" /etc/postfix/main.cf
fi
}
function _setup_dovecot_local_user
{
_notify 'task' 'Setting up Dovecot Local User'
echo -n > /etc/postfix/vmailbox
echo -n > /etc/dovecot/userdb
if [[ -f /tmp/docker-mailserver/postfix-accounts.cf ]] && [[ ${ENABLE_LDAP} -ne 1 ]]
then
_notify 'inf' "Checking file line endings"
sed -i 's/\r//g' /tmp/docker-mailserver/postfix-accounts.cf
_notify 'inf' "Regenerating postfix user list"
echo "# WARNING: this file is auto-generated. Modify config/postfix-accounts.cf to edit user list." > /etc/postfix/vmailbox
# checking that /tmp/docker-mailserver/postfix-accounts.cf ends with a newline
# shellcheck disable=SC1003
sed -i -e '$a\' /tmp/docker-mailserver/postfix-accounts.cf
chown dovecot:dovecot /etc/dovecot/userdb
chmod 640 /etc/dovecot/userdb
sed -i -e '/\!include auth-ldap\.conf\.ext/s/^/#/' /etc/dovecot/conf.d/10-auth.conf
sed -i -e '/\!include auth-passwdfile\.inc/s/^#//' /etc/dovecot/conf.d/10-auth.conf
# creating users ; 'pass' is encrypted
# comments and empty lines are ignored
grep -v "^\s*$\|^\s*\#" /tmp/docker-mailserver/postfix-accounts.cf | while IFS=$'|' read -r LOGIN PASS
do
# Setting variables for better readability
USER=$(echo "${LOGIN}" | cut -d @ -f1)
DOMAIN=$(echo "${LOGIN}" | cut -d @ -f2)
USER_ATTRIBUTES=""
# test if user has a defined quota
if [[ -f /tmp/docker-mailserver/dovecot-quotas.cf ]]
then
declare -a USER_QUOTA
IFS=':' ; read -r -a USER_QUOTA < <(grep "${USER}@${DOMAIN}:" -i /tmp/docker-mailserver/dovecot-quotas.cf)
unset IFS
[[ ${#USER_QUOTA[@]} -eq 2 ]] && USER_ATTRIBUTES="${USER_ATTRIBUTES}userdb_quota_rule=*:bytes=${USER_QUOTA[1]}"
fi
# Let's go!
_notify 'inf' "user '${USER}' for domain '${DOMAIN}' with password '********', attr=${USER_ATTRIBUTES}"
echo "${LOGIN} ${DOMAIN}/${USER}/" >> /etc/postfix/vmailbox
# User database for dovecot has the following format:
# user:password:uid:gid:(gecos):home:(shell):extra_fields
# Example :
# ${LOGIN}:${PASS}:5000:5000::/var/mail/${DOMAIN}/${USER}::userdb_mail=maildir:/var/mail/${DOMAIN}/${USER}
echo "${LOGIN}:${PASS}:5000:5000::/var/mail/${DOMAIN}/${USER}::${USER_ATTRIBUTES}" >> /etc/dovecot/userdb
mkdir -p "/var/mail/${DOMAIN}/${USER}"
# Copy user provided sieve file, if present
if [[ -e "/tmp/docker-mailserver/${LOGIN}.dovecot.sieve" ]]
then
cp "/tmp/docker-mailserver/${LOGIN}.dovecot.sieve" "/var/mail/${DOMAIN}/${USER}/.dovecot.sieve"
fi
echo "${DOMAIN}" >> /tmp/vhost.tmp
done
else
_notify 'inf' "'config/docker-mailserver/postfix-accounts.cf' is not provided. No mail account created."
fi
if ! grep '@' /tmp/docker-mailserver/postfix-accounts.cf | grep -q '|'
then
if [[ ${ENABLE_LDAP} -eq 0 ]]
then
_notify 'fatal' "Unless using LDAP, you need at least 1 email account to start Dovecot."
_defunc
fi
fi
}
function _setup_ldap
{
_notify 'task' 'Setting up Ldap'
_notify 'inf' 'Checking for custom configs'
for i in 'users' 'groups' 'aliases' 'domains'
do
local FPATH="/tmp/docker-mailserver/ldap-${i}.cf"
if [[ -f ${FPATH} ]]
then
cp "${FPATH}" "/etc/postfix/ldap-${i}.cf"
fi
done
_notify 'inf' 'Starting to override configs'
local FILES=(
/etc/postfix/ldap-users.cf
/etc/postfix/ldap-groups.cf
/etc/postfix/ldap-aliases.cf
/etc/postfix/ldap-domains.cf
/etc/postfix/maps/sender_login_maps.ldap
)
for FILE in "${FILES[@]}"
do
[[ ${FILE} =~ ldap-user ]] && export LDAP_QUERY_FILTER="${LDAP_QUERY_FILTER_USER}"
[[ ${FILE} =~ ldap-group ]] && export LDAP_QUERY_FILTER="${LDAP_QUERY_FILTER_GROUP}"
[[ ${FILE} =~ ldap-aliases ]] && export LDAP_QUERY_FILTER="${LDAP_QUERY_FILTER_ALIAS}"
[[ ${FILE} =~ ldap-domains ]] && export LDAP_QUERY_FILTER="${LDAP_QUERY_FILTER_DOMAIN}"
configomat.sh "LDAP_" "${FILE}"
done
_notify 'inf' "Configuring dovecot LDAP"
declare -A _dovecot_ldap_mapping
_dovecot_ldap_mapping["DOVECOT_BASE"]="${DOVECOT_BASE:="${LDAP_SEARCH_BASE}"}"
_dovecot_ldap_mapping["DOVECOT_DN"]="${DOVECOT_DN:="${LDAP_BIND_DN}"}"
_dovecot_ldap_mapping["DOVECOT_DNPASS"]="${DOVECOT_DNPASS:="${LDAP_BIND_PW}"}"
_dovecot_ldap_mapping["DOVECOT_HOSTS"]="${DOVECOT_HOSTS:="${LDAP_SERVER_HOST}"}"
# Not sure whether this can be the same or not
# _dovecot_ldap_mapping["DOVECOT_PASS_FILTER"]="${DOVECOT_PASS_FILTER:="${LDAP_QUERY_FILTER_USER}"}"
# _dovecot_ldap_mapping["DOVECOT_USER_FILTER"]="${DOVECOT_USER_FILTER:="${LDAP_QUERY_FILTER_USER}"}"
for VAR in "${!_dovecot_ldap_mapping[@]}"
do
export "${VAR}=${_dovecot_ldap_mapping[${VAR}]}"
done
configomat.sh "DOVECOT_" "/etc/dovecot/dovecot-ldap.conf.ext"
# add domainname to vhost
echo "${DOMAINNAME}" >>/tmp/vhost.tmp
_notify 'inf' "Enabling dovecot LDAP authentification"
sed -i -e '/\!include auth-ldap\.conf\.ext/s/^#//' /etc/dovecot/conf.d/10-auth.conf
sed -i -e '/\!include auth-passwdfile\.inc/s/^/#/' /etc/dovecot/conf.d/10-auth.conf
_notify 'inf' "Configuring LDAP"
if [[ -f /etc/postfix/ldap-users.cf ]]
then
postconf -e "virtual_mailbox_maps = ldap:/etc/postfix/ldap-users.cf" || \
_notify 'inf' "==> Warning: /etc/postfix/ldap-user.cf not found"
fi
if [[ -f /etc/postfix/ldap-domains.cf ]]
then
postconf -e "virtual_mailbox_domains = /etc/postfix/vhost, ldap:/etc/postfix/ldap-domains.cf" || \
_notify 'inf' "==> Warning: /etc/postfix/ldap-domains.cf not found"
fi
if [[ -f /etc/postfix/ldap-aliases.cf ]] && [[ -f /etc/postfix/ldap-groups.cf ]]
then
postconf -e "virtual_alias_maps = ldap:/etc/postfix/ldap-aliases.cf, ldap:/etc/postfix/ldap-groups.cf" || \
_notify 'inf' "==> Warning: /etc/postfix/ldap-aliases.cf or /etc/postfix/ldap-groups.cf not found"
fi
return 0
}
function _setup_postgrey
{
_notify 'inf' "Configuring postgrey"
sed -i -e 's/, reject_rbl_client bl.spamcop.net$/, reject_rbl_client bl.spamcop.net, check_policy_service inet:127.0.0.1:10023/' /etc/postfix/main.cf
sed -i -e "s/\"--inet=127.0.0.1:10023\"/\"--inet=127.0.0.1:10023 --delay=${POSTGREY_DELAY} --max-age=${POSTGREY_MAX_AGE} --auto-whitelist-clients=${POSTGREY_AUTO_WHITELIST_CLIENTS}\"/" /etc/default/postgrey
TEXT_FOUND=$(grep -c -i "POSTGREY_TEXT" /etc/default/postgrey)
if [[ ${TEXT_FOUND} -eq 0 ]]
then
printf "POSTGREY_TEXT=\"%s\"\n\n" "${POSTGREY_TEXT}" >> /etc/default/postgrey
fi
if [[ -f /tmp/docker-mailserver/whitelist_clients.local ]]
then
cp -f /tmp/docker-mailserver/whitelist_clients.local /etc/postgrey/whitelist_clients.local
fi
if [[ -f /tmp/docker-mailserver/whitelist_recipients ]]
then
cp -f /tmp/docker-mailserver/whitelist_recipients /etc/postgrey/whitelist_recipients
fi
}
function _setup_postfix_postscreen
{
_notify 'inf' "Configuring postscreen"
sed -i -e "s/postscreen_dnsbl_action = enforce/postscreen_dnsbl_action = ${POSTSCREEN_ACTION}/" \
-e "s/postscreen_greet_action = enforce/postscreen_greet_action = ${POSTSCREEN_ACTION}/" \
-e "s/postscreen_bare_newline_action = enforce/postscreen_bare_newline_action = ${POSTSCREEN_ACTION}/" /etc/postfix/main.cf
}
function _setup_postfix_sizelimits
{
_notify 'inf' "Configuring postfix message size limit"
postconf -e "message_size_limit = ${DEFAULT_VARS["POSTFIX_MESSAGE_SIZE_LIMIT"]}"
_notify 'inf' "Configuring postfix mailbox size limit"
postconf -e "mailbox_size_limit = ${DEFAULT_VARS["POSTFIX_MAILBOX_SIZE_LIMIT"]}"
_notify 'inf' "Configuring postfix virtual mailbox size limit"
postconf -e "virtual_mailbox_limit = ${DEFAULT_VARS["POSTFIX_MAILBOX_SIZE_LIMIT"]}"
}
function _setup_postfix_smtputf8
{
_notify 'inf' "Configuring postfix smtputf8 support (disable)"
postconf -e "smtputf8_enable = no"
}
function _setup_spoof_protection
{
_notify 'inf' "Configuring Spoof Protection"
sed -i 's|smtpd_sender_restrictions =|smtpd_sender_restrictions = reject_authenticated_sender_login_mismatch,|' /etc/postfix/main.cf
# shellcheck disable=SC2015
[[ ${ENABLE_LDAP} -eq 1 ]] && postconf -e "smtpd_sender_login_maps=ldap:/etc/postfix/ldap-users.cf ldap:/etc/postfix/ldap-aliases.cf ldap:/etc/postfix/ldap-groups.cf" || postconf -e "smtpd_sender_login_maps=texthash:/etc/postfix/virtual, hash:/etc/aliases, pcre:/etc/postfix/regexp, pcre:/etc/postfix/maps/sender_login_maps.pcre"
}
function _setup_postfix_access_control
{
_notify 'inf' "Configuring user access"
if [[ -f /tmp/docker-mailserver/postfix-send-access.cf ]]
then
sed -i 's|smtpd_sender_restrictions =|smtpd_sender_restrictions = check_sender_access texthash:/tmp/docker-mailserver/postfix-send-access.cf,|' /etc/postfix/main.cf
fi
if [[ -f /tmp/docker-mailserver/postfix-receive-access.cf ]]
then
sed -i 's|smtpd_recipient_restrictions =|smtpd_recipient_restrictions = check_recipient_access texthash:/tmp/docker-mailserver/postfix-receive-access.cf,|' /etc/postfix/main.cf
fi
}
function _setup_postfix_sasl
{
if [[ ${ENABLE_SASLAUTHD} -eq 1 ]]
then
[[ ! -f /etc/postfix/sasl/smtpd.conf ]] && cat > /etc/postfix/sasl/smtpd.conf << EOF
pwcheck_method: saslauthd
mech_list: plain login
EOF
fi
# cyrus sasl or dovecot sasl
if [[ ${ENABLE_SASLAUTHD} -eq 1 ]] || [[ ${SMTP_ONLY} -eq 0 ]]
then
sed -i -e 's|^smtpd_sasl_auth_enable[[:space:]]\+.*|smtpd_sasl_auth_enable = yes|g' /etc/postfix/main.cf
else
sed -i -e 's|^smtpd_sasl_auth_enable[[:space:]]\+.*|smtpd_sasl_auth_enable = no|g' /etc/postfix/main.cf
fi
return 0
}
function _setup_saslauthd
{
_notify 'task' "Setting up Saslauthd"
_notify 'inf' "Configuring Cyrus SASL"
# checking env vars and setting defaults
[[ -z ${SASLAUTHD_MECHANISMS} ]] && SASLAUTHD_MECHANISMS=pam
[[ ${SASLAUTHD_MECHANISMS} == ldap ]] && [[ -z ${SASLAUTHD_LDAP_SEARCH_BASE} ]] && SASLAUTHD_MECHANISMS=pam
[[ -z ${SASLAUTHD_LDAP_SERVER} ]] && SASLAUTHD_LDAP_SERVER=localhost
[[ -z ${SASLAUTHD_LDAP_FILTER} ]] && SASLAUTHD_LDAP_FILTER='(&(uniqueIdentifier=%u)(mailEnabled=TRUE))'
if [[ -z ${SASLAUTHD_LDAP_SSL} ]] || [[ ${SASLAUTHD_LDAP_SSL} -eq 0 ]]
then
SASLAUTHD_LDAP_PROTO='ldap://' || SASLAUTHD_LDAP_PROTO='ldaps://'
fi
[[ -z ${SASLAUTHD_LDAP_START_TLS} ]] && SASLAUTHD_LDAP_START_TLS=no
[[ -z ${SASLAUTHD_LDAP_TLS_CHECK_PEER} ]] && SASLAUTHD_LDAP_TLS_CHECK_PEER=no
if [[ ! -f /etc/saslauthd.conf ]]
then
_notify 'inf' "Creating /etc/saslauthd.conf"
cat > /etc/saslauthd.conf << EOF
ldap_servers: ${SASLAUTHD_LDAP_PROTO}${SASLAUTHD_LDAP_SERVER}
ldap_auth_method: bind
ldap_bind_dn: ${SASLAUTHD_LDAP_BIND_DN}
ldap_bind_pw: ${SASLAUTHD_LDAP_PASSWORD}
ldap_search_base: ${SASLAUTHD_LDAP_SEARCH_BASE}
ldap_filter: ${SASLAUTHD_LDAP_FILTER}
ldap_start_tls: ${SASLAUTHD_LDAP_START_TLS}
ldap_tls_check_peer: ${SASLAUTHD_LDAP_TLS_CHECK_PEER}
ldap_referrals: yes
log_level: 10
EOF
fi
sed -i \
-e "/^[^#].*smtpd_sasl_type.*/s/^/#/g" \
-e "/^[^#].*smtpd_sasl_path.*/s/^/#/g" \
/etc/postfix/master.cf
sed -i \
-e "/smtpd_sasl_path =.*/d" \
-e "/smtpd_sasl_type =.*/d" \
-e "/dovecot_destination_recipient_limit =.*/d" \
/etc/postfix/main.cf
gpasswd -a postfix sasl
}
function _setup_postfix_aliases
{
_notify 'task' 'Setting up Postfix Aliases'
echo -n > /etc/postfix/virtual
echo -n > /etc/postfix/regexp
if [[ -f /tmp/docker-mailserver/postfix-virtual.cf ]]
then
# fixing old virtual user file
if grep -q ",$" /tmp/docker-mailserver/postfix-virtual.cf
then
sed -i -e "s/, /,/g" -e "s/,$//g" /tmp/docker-mailserver/postfix-virtual.cf
fi
cp -f /tmp/docker-mailserver/postfix-virtual.cf /etc/postfix/virtual
# the `to` is important, don't delete it
# shellcheck disable=SC2034
(grep -v "^\s*$\|^\s*\#" /tmp/docker-mailserver/postfix-virtual.cf || true) | while read -r FROM TO
do
# Setting variables for better readability
UNAME=$(echo "${FROM}" | cut -d @ -f1)
DOMAIN=$(echo "${FROM}" | cut -d @ -f2)
# if they are equal it means the line looks like: "user1 other@domain.tld"
[ "${UNAME}" != "${DOMAIN}" ] && echo "${DOMAIN}" >> /tmp/vhost.tmp
done
else
_notify 'inf' "Warning 'config/postfix-virtual.cf' is not provided. No mail alias/forward created."
fi
if [[ -f /tmp/docker-mailserver/postfix-regexp.cf ]]
then
_notify 'inf' "Adding regexp alias file postfix-regexp.cf"
cp -f /tmp/docker-mailserver/postfix-regexp.cf /etc/postfix/regexp
sed -i -e '/^virtual_alias_maps/{
s/ pcre:.*//
s/$/ pcre:\/etc\/postfix\/regexp/
}' /etc/postfix/main.cf
fi
_notify 'inf' "Configuring root alias"
echo "root: ${POSTMASTER_ADDRESS}" > /etc/aliases
if [[ -f /tmp/docker-mailserver/postfix-aliases.cf ]]
then
cat /tmp/docker-mailserver/postfix-aliases.cf >> /etc/aliases
else
_notify 'inf' "'config/postfix-aliases.cf' is not provided and will be auto created."
echo -n >/tmp/docker-mailserver/postfix-aliases.cf
fi
postalias /etc/aliases
}
function _setup_SRS
{
_notify 'task' 'Setting up SRS'
postconf -e "sender_canonical_maps = tcp:localhost:10001"
postconf -e "sender_canonical_classes = ${SRS_SENDER_CLASSES}"
postconf -e "recipient_canonical_maps = tcp:localhost:10002"
postconf -e "recipient_canonical_classes = envelope_recipient,header_recipient"
}
function _setup_dkim
{
_notify 'task' 'Setting up DKIM'
mkdir -p /etc/opendkim && touch /etc/opendkim/SigningTable
# Check if keys are already available
if [[ -e "/tmp/docker-mailserver/opendkim/KeyTable" ]]
then
cp -a /tmp/docker-mailserver/opendkim/* /etc/opendkim/
_notify 'inf' "DKIM keys added for: $(ls -C /etc/opendkim/keys/)"
_notify 'inf' "Changing permissions on /etc/opendkim"
chown -R opendkim:opendkim /etc/opendkim/
chmod -R 0700 /etc/opendkim/keys/ # make sure permissions are right
else
_notify 'warn' "No DKIM key provided. Check the documentation to find how to get your keys."
local KEYTABLE_FILE="/etc/opendkim/KeyTable"
[[ ! -f ${KEYTABLE_FILE} ]] && touch "${KEYTABLE_FILE}"
fi
# setup nameservers paramater from /etc/resolv.conf if not defined
if ! grep '^Nameservers' /etc/opendkim.conf
then
echo "Nameservers $(grep '^nameserver' /etc/resolv.conf | awk -F " " '{print $2}' | paste -sd ',' -)" >> /etc/opendkim.conf
_notify 'inf' "Nameservers added to /etc/opendkim.conf"
fi
}
function _setup_ssl
{
_notify 'task' 'Setting up SSL'
# TLS strength/level configuration
case "${TLS_LEVEL}" in
"modern" )
# Postfix configuration
sed -i -r 's/^smtpd_tls_mandatory_protocols =.*$/smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1/' /etc/postfix/main.cf
sed -i -r 's/^smtpd_tls_protocols =.*$/smtpd_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1/' /etc/postfix/main.cf
sed -i -r 's/^smtp_tls_protocols =.*$/smtp_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1/' /etc/postfix/main.cf
sed -i -r 's/^tls_high_cipherlist =.*$/tls_high_cipherlist = ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256/' /etc/postfix/main.cf
# Dovecot configuration (secure by default though)
sed -i -r 's/^ssl_min_protocol =.*$/ssl_min_protocol = TLSv1.2/' /etc/dovecot/conf.d/10-ssl.conf
sed -i -r 's/^ssl_cipher_list =.*$/ssl_cipher_list = ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256/' /etc/dovecot/conf.d/10-ssl.conf
_notify 'inf' "TLS configured with 'modern' ciphers"
;;
"intermediate" )
# Postfix configuration
sed -i -r 's/^smtpd_tls_mandatory_protocols =.*$/smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3/' /etc/postfix/main.cf
sed -i -r 's/^smtpd_tls_protocols =.*$/smtpd_tls_protocols = !SSLv2,!SSLv3/' /etc/postfix/main.cf
sed -i -r 's/^smtp_tls_protocols =.*$/smtp_tls_protocols = !SSLv2,!SSLv3/' /etc/postfix/main.cf
sed -i -r 's/^tls_high_cipherlist =.*$/tls_high_cipherlist = ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS/' /etc/postfix/main.cf
# Dovecot configuration
sed -i -r 's/^ssl_min_protocol = .*$/ssl_min_protocol = TLSv1/' /etc/dovecot/conf.d/10-ssl.conf
sed -i -r 's/^ssl_cipher_list = .*$/ssl_cipher_list = ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS/' /etc/dovecot/conf.d/10-ssl.conf
_notify 'inf' "TLS configured with 'intermediate' ciphers"
;;
* ) _notify 'err' 'TLS_LEVEL not found _setup_ssl' ;;
esac
# SSL certificate Configuration
case "${SSL_TYPE}" in
"letsencrypt" )
_notify 'inf' "Configuring SSL using 'letsencrypt'"
# letsencrypt folders and files mounted in /etc/letsencrypt
local LETSENCRYPT_DOMAIN=""
local LETSENCRYPT_KEY=""
[[ -f /etc/letsencrypt/acme.json ]] && (_extract_certs_from_acme "${HOSTNAME}" || _extract_certs_from_acme "${DOMAINNAME}")
# first determine the letsencrypt domain by checking both the full hostname or just the domainname if a SAN is used in the cert
if [[ -e /etc/letsencrypt/live/${HOSTNAME}/fullchain.pem ]]
then
LETSENCRYPT_DOMAIN=${HOSTNAME}
elif [[ -e /etc/letsencrypt/live/${DOMAINNAME}/fullchain.pem ]]
then
LETSENCRYPT_DOMAIN=${DOMAINNAME}
else
_notify 'err' "Cannot access '/etc/letsencrypt/live/${HOSTNAME}/fullchain.pem' or '/etc/letsencrypt/live/${DOMAINNAME}/fullchain.pem'"
return 1
fi
# then determine the keyfile to use
if [[ -n ${LETSENCRYPT_DOMAIN} ]]
then
if [[ -e /etc/letsencrypt/live/${LETSENCRYPT_DOMAIN}/privkey.pem ]]
then
LETSENCRYPT_KEY="privkey"
elif [[ -e /etc/letsencrypt/live/${LETSENCRYPT_DOMAIN}/key.pem ]]
then
LETSENCRYPT_KEY="key"
else
_notify 'err' "Cannot access '/etc/letsencrypt/live/${LETSENCRYPT_DOMAIN}/privkey.pem' nor 'key.pem'"
return 1
fi
fi
# finally, make the changes to the postfix and dovecot configurations
if [[ -n ${LETSENCRYPT_KEY} ]]
then
_notify 'inf' "Adding ${LETSENCRYPT_DOMAIN} SSL certificate to the postfix and dovecot configuration"
# Postfix configuration
sed -i -r 's~smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem~smtpd_tls_cert_file=/etc/letsencrypt/live/'"${LETSENCRYPT_DOMAIN}"'/fullchain.pem~g' /etc/postfix/main.cf
sed -i -r 's~smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key~smtpd_tls_key_file=/etc/letsencrypt/live/'"${LETSENCRYPT_DOMAIN}"'/'"${LETSENCRYPT_KEY}"'\.pem~g' /etc/postfix/main.cf
# Dovecot configuration
sed -i -e 's~ssl_cert = </etc/dovecot/ssl/dovecot\.pem~ssl_cert = </etc/letsencrypt/live/'"${LETSENCRYPT_DOMAIN}"'/fullchain\.pem~g' /etc/dovecot/conf.d/10-ssl.conf
sed -i -e 's~ssl_key = </etc/dovecot/ssl/dovecot\.key~ssl_key = </etc/letsencrypt/live/'"${LETSENCRYPT_DOMAIN}"'/'"${LETSENCRYPT_KEY}"'\.pem~g' /etc/dovecot/conf.d/10-ssl.conf
_notify 'inf' "SSL configured with 'letsencrypt' certificates"
fi
return 0
;;
"custom" )
# Adding CA signed SSL certificate if provided in 'postfix/ssl' folder
if [[ -e /tmp/docker-mailserver/ssl/${HOSTNAME}-full.pem ]]
then
_notify 'inf' "Adding ${HOSTNAME} SSL certificate"
mkdir -p /etc/postfix/ssl
cp "/tmp/docker-mailserver/ssl/${HOSTNAME}-full.pem" /etc/postfix/ssl
# Postfix configuration
sed -i -r 's~smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem~smtpd_tls_cert_file=/etc/postfix/ssl/'"${HOSTNAME}"'-full.pem~g' /etc/postfix/main.cf
sed -i -r 's~smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key~smtpd_tls_key_file=/etc/postfix/ssl/'"${HOSTNAME}"'-full.pem~g' /etc/postfix/main.cf
# Dovecot configuration
sed -i -e 's~ssl_cert = </etc/dovecot/ssl/dovecot\.pem~ssl_cert = </etc/postfix/ssl/'"${HOSTNAME}"'-full\.pem~g' /etc/dovecot/conf.d/10-ssl.conf
sed -i -e 's~ssl_key = </etc/dovecot/ssl/dovecot\.key~ssl_key = </etc/postfix/ssl/'"${HOSTNAME}"'-full\.pem~g' /etc/dovecot/conf.d/10-ssl.conf
_notify 'inf' "SSL configured with 'CA signed/custom' certificates"
fi
;;
"manual" )
# Lets you manually specify the location of the SSL Certs to use. This gives you some more control over this whole processes (like using kube-lego to generate certs)
if [[ -n ${SSL_CERT_PATH} ]] && [[ -n ${SSL_KEY_PATH} ]]
then
_notify 'inf' "Configuring certificates using cert ${SSL_CERT_PATH} and key ${SSL_KEY_PATH}"
mkdir -p /etc/postfix/ssl
cp "${SSL_CERT_PATH}" /etc/postfix/ssl/cert
cp "${SSL_KEY_PATH}" /etc/postfix/ssl/key
chmod 600 /etc/postfix/ssl/cert
chmod 600 /etc/postfix/ssl/key
# Postfix configuration
sed -i -r 's~smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem~smtpd_tls_cert_file=/etc/postfix/ssl/cert~g' /etc/postfix/main.cf
sed -i -r 's~smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key~smtpd_tls_key_file=/etc/postfix/ssl/key~g' /etc/postfix/main.cf
# Dovecot configuration
sed -i -e 's~ssl_cert = </etc/dovecot/ssl/dovecot\.pem~ssl_cert = </etc/postfix/ssl/cert~g' /etc/dovecot/conf.d/10-ssl.conf
sed -i -e 's~ssl_key = </etc/dovecot/ssl/dovecot\.key~ssl_key = </etc/postfix/ssl/key~g' /etc/dovecot/conf.d/10-ssl.conf
_notify 'inf' "SSL configured with 'Manual' certificates"
fi
;;
"self-signed" )
# Adding self-signed SSL certificate if provided in 'postfix/ssl' folder
if [[ -e /tmp/docker-mailserver/ssl/${HOSTNAME}-cert.pem ]] \
&& [[ -e /tmp/docker-mailserver/ssl/${HOSTNAME}-key.pem ]] \
&& [[ -e /tmp/docker-mailserver/ssl/${HOSTNAME}-combined.pem ]] \
&& [[ -e /tmp/docker-mailserver/ssl/demoCA/cacert.pem ]]
then
_notify 'inf' "Adding ${HOSTNAME} SSL certificate"
mkdir -p /etc/postfix/ssl
cp "/tmp/docker-mailserver/ssl/${HOSTNAME}-cert.pem" /etc/postfix/ssl
cp "/tmp/docker-mailserver/ssl/${HOSTNAME}-key.pem" /etc/postfix/ssl
# Force permission on key file
chmod 600 "/etc/postfix/ssl/${HOSTNAME}-key.pem"
cp "/tmp/docker-mailserver/ssl/${HOSTNAME}-combined.pem" /etc/postfix/ssl
cp /tmp/docker-mailserver/ssl/demoCA/cacert.pem /etc/postfix/ssl
# Postfix configuration
sed -i -r 's~smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem~smtpd_tls_cert_file=/etc/postfix/ssl/'"${HOSTNAME}"'-cert.pem~g' /etc/postfix/main.cf
sed -i -r 's~smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key~smtpd_tls_key_file=/etc/postfix/ssl/'"${HOSTNAME}"'-key.pem~g' /etc/postfix/main.cf
sed -i -r 's~#smtpd_tls_CAfile=~smtpd_tls_CAfile=/etc/postfix/ssl/cacert.pem~g' /etc/postfix/main.cf
sed -i -r 's~#smtp_tls_CAfile=~smtp_tls_CAfile=/etc/postfix/ssl/cacert.pem~g' /etc/postfix/main.cf
ln -s /etc/postfix/ssl/cacert.pem "/etc/ssl/certs/cacert-${HOSTNAME}.pem"
# Dovecot configuration
sed -i -e 's~ssl_cert = </etc/dovecot/ssl/dovecot\.pem~ssl_cert = </etc/postfix/ssl/'"${HOSTNAME}"'-combined\.pem~g' /etc/dovecot/conf.d/10-ssl.conf
sed -i -e 's~ssl_key = </etc/dovecot/ssl/dovecot\.key~ssl_key = </etc/postfix/ssl/'"${HOSTNAME}"'-key\.pem~g' /etc/dovecot/conf.d/10-ssl.conf
_notify 'inf' "SSL configured with 'self-signed' certificates"
fi
;;
'' )
# ${SSL_TYPE}=empty, no SSL certificate, plain text access
# Dovecot configuration
sed -i -e 's~#disable_plaintext_auth = yes~disable_plaintext_auth = no~g' /etc/dovecot/conf.d/10-auth.conf
sed -i -e 's~ssl = required~ssl = yes~g' /etc/dovecot/conf.d/10-ssl.conf
_notify 'inf' "SSL configured with plain text access"
;;
* )
# Unknown option, default behavior, no action is required
_notify 'warn' "SSL configured by default"
;;
esac
}
function _setup_postfix_vhost
{
_notify 'task' "Setting up Postfix vhost"
if [[ -f /tmp/vhost.tmp ]]
then
sort < /tmp/vhost.tmp | uniq > /etc/postfix/vhost && rm /tmp/vhost.tmp
elif [[ ! -f /etc/postfix/vhost ]]
then
touch /etc/postfix/vhost
fi
}
function _setup_inet_protocols
{
_notify 'task' 'Setting up POSTFIX_INET_PROTOCOLS option'
postconf -e "inet_protocols = ${POSTFIX_INET_PROTOCOLS}"
}
function _setup_docker_permit
{
_notify 'task' 'Setting up PERMIT_DOCKER Option'
local CONTAINER_IP CONTAINER_NETWORK
unset CONTAINER_NETWORKS
declare -a CONTAINER_NETWORKS
CONTAINER_IP=$(ip addr show "${DEFAULT_VARS['NETWORK_INTERFACE']}" | grep 'inet ' | sed 's/[^0-9\.\/]*//g' | cut -d '/' -f 1)
CONTAINER_NETWORK="$(echo "${CONTAINER_IP}" | cut -d '.' -f1-2).0.0"
while read -r IP
do
CONTAINER_NETWORKS+=("${IP}")
done < <(ip -o -4 addr show type veth | grep -E -o '[0-9\.]+/[0-9]+')
case ${PERMIT_DOCKER} in
"host" )
_notify 'inf' "Adding ${CONTAINER_NETWORK}/16 to my networks"
postconf -e "$(postconf | grep '^mynetworks =') ${CONTAINER_NETWORK}/16"
echo "${CONTAINER_NETWORK}/16" >> /etc/opendmarc/ignore.hosts
echo "${CONTAINER_NETWORK}/16" >> /etc/opendkim/TrustedHosts
;;
"network" )
_notify 'inf' "Adding docker network in my networks"
postconf -e "$(postconf | grep '^mynetworks =') 172.16.0.0/12"
echo 172.16.0.0/12 >> /etc/opendmarc/ignore.hosts
echo 172.16.0.0/12 >> /etc/opendkim/TrustedHosts
;;
"connected-networks" )
for NETWORK in "${CONTAINER_NETWORKS[@]}"
do
NETWORK=$(_sanitize_ipv4_to_subnet_cidr "${NETWORK}")
_notify 'inf' "Adding docker network ${NETWORK} in my networks"
postconf -e "$(postconf | grep '^mynetworks =') ${NETWORK}"
echo "${NETWORK}" >> /etc/opendmarc/ignore.hosts
echo "${NETWORK}" >> /etc/opendkim/TrustedHosts
done
;;
* )
_notify 'inf' "Adding container ip in my networks"
postconf -e "$(postconf | grep '^mynetworks =') ${CONTAINER_IP}/32"
echo "${CONTAINER_IP}/32" >> /etc/opendmarc/ignore.hosts
echo "${CONTAINER_IP}/32" >> /etc/opendkim/TrustedHosts
;;
esac
}
function _setup_postfix_virtual_transport
{
_notify 'task' 'Setting up Postfix virtual transport'
[[ -z ${POSTFIX_DAGENT} ]] && echo "${POSTFIX_DAGENT} not set." && \
kill -15 "$(< /var/run/supervisord.pid)" && return 1
postconf -e "virtual_transport = ${POSTFIX_DAGENT}"
}
function _setup_postfix_override_configuration
{
_notify 'task' 'Setting up Postfix Override configuration'
if [[ -f /tmp/docker-mailserver/postfix-main.cf ]]
then
while read -r line
do
# all valid postfix options start with a lower case letter
# http://www.postfix.org/postconf.5.html
if [[ ${line} =~ ^[a-z] ]]
then
postconf -e "${line}"
fi
done < /tmp/docker-mailserver/postfix-main.cf
_notify 'inf' "Loaded 'config/postfix-main.cf'"
else
_notify 'inf' "No extra postfix settings loaded because optional '/tmp/docker-mailserver/postfix-main.cf' not provided."
fi
if [[ -f /tmp/docker-mailserver/postfix-master.cf ]]
then
while read -r line
do
if [[ "${line}" =~ ^[0-9a-z] ]]
then
postconf -P "${line}"
fi
done < /tmp/docker-mailserver/postfix-master.cf
_notify 'inf' "Loaded 'config/postfix-master.cf'"
else
_notify 'inf' "No extra postfix settings loaded because optional '/tmp/docker-mailserver/postfix-master.cf' not provided."
fi
_notify 'inf' "set the compatibility level to 2"
postconf compatibility_level=2
}
function _setup_postfix_sasl_password
{
_notify 'task' 'Setting up Postfix SASL Password'
# support general SASL password
rm -f /etc/postfix/sasl_passwd
if [[ -n ${SASL_PASSWD} ]]
then
echo "${SASL_PASSWD}" >> /etc/postfix/sasl_passwd
fi
# install SASL passwords
if [[ -f /etc/postfix/sasl_passwd ]]
then
chown root:root /etc/postfix/sasl_passwd
chmod 0600 /etc/postfix/sasl_passwd
_notify 'inf' "Loaded SASL_PASSWD"
else
_notify 'inf' "Warning: 'SASL_PASSWD' is not provided. /etc/postfix/sasl_passwd not created."
fi
}
function _setup_postfix_default_relay_host
{
_notify 'task' 'Applying default relay host to Postfix'
_notify 'inf' "Applying default relay host ${DEFAULT_RELAY_HOST} to /etc/postfix/main.cf"
postconf -e "relayhost = ${DEFAULT_RELAY_HOST}"
}
function _setup_postfix_relay_hosts
{
_notify 'task' 'Setting up Postfix Relay Hosts'
# copy old AWS_SES variables to new variables
if [[ -z ${RELAY_HOST} ]]
then
if [[ -n ${AWS_SES_HOST} ]]
then
_notify 'inf' "Using deprecated AWS_SES environment variables"
RELAY_HOST="${AWS_SES_HOST}"
fi
fi
if [[ -z ${RELAY_PORT} ]]
then
if [[ -z ${AWS_SES_PORT} ]]
then
RELAY_PORT=25
else
RELAY_PORT=${AWS_SES_PORT}
fi
fi
if [[ -z ${RELAY_USER} ]]
then
if [[ -n ${AWS_SES_USERPASS} ]]
then
# NB this will fail if the password contains a colon!
RELAY_USER=$(echo "${AWS_SES_USERPASS}" | cut -f 1 -d ":")
RELAY_PASSWORD=$(echo "${AWS_SES_USERPASS}" | cut -f 2 -d ":")
fi
fi
_notify 'inf' "Setting up outgoing email relaying via ${RELAY_HOST}:${RELAY_PORT}"
# setup /etc/postfix/sasl_passwd
# --
# @domain1.com postmaster@domain1.com:your-password-1
# @domain2.com postmaster@domain2.com:your-password-2
# @domain3.com postmaster@domain3.com:your-password-3
#
# [smtp.mailgun.org]:587 postmaster@domain2.com:your-password-2
if [[ -f /tmp/docker-mailserver/postfix-sasl-password.cf ]]
then
_notify 'inf' "Adding relay authentication from postfix-sasl-password.cf"
while read -r line
do
if ! echo "${line}" | grep -q -e "^\s*#"
then
echo "${line}" >> /etc/postfix/sasl_passwd
fi
done < /tmp/docker-mailserver/postfix-sasl-password.cf
fi
# add default relay
if [[ -n ${RELAY_USER} ]] && [[ -n ${RELAY_PASSWORD} ]]
then
echo "[${RELAY_HOST}]:${RELAY_PORT} ${RELAY_USER}:${RELAY_PASSWORD}" >> /etc/postfix/sasl_passwd
else
if [[ ! -f /tmp/docker-mailserver/postfix-sasl-password.cf ]]
then
_notify 'warn' "No relay auth file found and no default set"
fi
fi
if [[ -f /etc/postfix/sasl_passwd ]]
then
chown root:root /etc/postfix/sasl_passwd
chmod 0600 /etc/postfix/sasl_passwd
fi
# end /etc/postfix/sasl_passwd
_populate_relayhost_map
postconf -e \
"smtp_sasl_auth_enable = yes" \
"smtp_sasl_security_options = noanonymous" \
"smtp_sasl_password_maps = texthash:/etc/postfix/sasl_passwd" \
"smtp_use_tls = yes" \
"smtp_tls_security_level = encrypt" \
"smtp_tls_note_starttls_offer = yes" \
"smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt" \
"sender_dependent_relayhost_maps = texthash:/etc/postfix/relayhost_map" \
"smtp_sender_dependent_authentication = yes"
}
function _setup_postfix_dhparam
{
_notify 'task' 'Setting up Postfix dhparam'
if [[ ${ONE_DIR} -eq 1 ]]
then
DHPARAMS_FILE=/var/mail-state/lib-shared/dhparams.pem
if [[ ! -f ${DHPARAMS_FILE} ]]
then
_notify 'inf' "Use ffdhe4096 for dhparams (postfix)"
rm -f /etc/postfix/dhparams.pem && cp /etc/postfix/shared/ffdhe4096.pem /etc/postfix/dhparams.pem
else
_notify 'inf' "Use postfix dhparams that was generated previously"
_notify 'warn' "Using self-generated dhparams is considered as insecure."
_notify 'warn' "Unless you known what you are doing, please remove /var/mail-state/lib-shared/dhparams.pem."
# Copy from the state directory to the working location
rm -f /etc/postfix/dhparams.pem && cp "${DHPARAMS_FILE}" /etc/postfix/dhparams.pem
fi
else
if [[ ! -f /etc/postfix/dhparams.pem ]]
then
if [[ -f /etc/dovecot/dh.pem ]]
then
_notify 'inf' "Copy dovecot dhparams to postfix"
cp /etc/dovecot/dh.pem /etc/postfix/dhparams.pem
elif [[ -f /tmp/docker-mailserver/dhparams.pem ]]
then
_notify 'inf' "Copy pre-generated dhparams to postfix"
_notify 'warn' "Using self-generated dhparams is considered as insecure."
_notify 'warn' "Unless you known what you are doing, please remove /var/mail-state/lib-shared/dhparams.pem."
cp /tmp/docker-mailserver/dhparams.pem /etc/postfix/dhparams.pem
else
_notify 'inf' "Use ffdhe4096 for dhparams (postfix)"
cp /etc/postfix/shared/ffdhe4096.pem /etc/postfix/dhparams.pem
fi
else
_notify 'inf' "Use existing postfix dhparams"
_notify 'warn' "Using self-generated dhparams is considered insecure."
_notify 'warn' "Unless you known what you are doing, please remove /etc/postfix/dhparams.pem."
fi
fi
}
function _setup_dovecot_dhparam
{
_notify 'task' 'Setting up Dovecot dhparam'
if [[ ${ONE_DIR} -eq 1 ]]
then
DHPARAMS_FILE=/var/mail-state/lib-shared/dhparams.pem
if [[ ! -f ${DHPARAMS_FILE} ]]
then
_notify 'inf' "Use ffdhe4096 for dhparams (dovecot)"
rm -f /etc/dovecot/dh.pem && cp /etc/postfix/shared/ffdhe4096.pem /etc/dovecot/dh.pem
else
_notify 'inf' "Use dovecot dhparams that was generated previously"
_notify 'warn' "Using self-generated dhparams is considered as insecure."
_notify 'warn' "Unless you known what you are doing, please remove /var/mail-state/lib-shared/dhparams.pem."
# Copy from the state directory to the working location
rm -f /etc/dovecot/dh.pem && cp "${DHPARAMS_FILE}" /etc/dovecot/dh.pem
fi
else
if [[ ! -f /etc/dovecot/dh.pem ]]
then
if [[ -f /etc/postfix/dhparams.pem ]]
then
_notify 'inf' "Copy postfix dhparams to dovecot"
cp /etc/postfix/dhparams.pem /etc/dovecot/dh.pem
elif [[ -f /tmp/docker-mailserver/dhparams.pem ]]
then
_notify 'inf' "Copy pre-generated dhparams to dovecot"
_notify 'warn' "Using self-generated dhparams is considered as insecure."
_notify 'warn' "Unless you known what you are doing, please remove /tmp/docker-mailserver/dhparams.pem."
cp /tmp/docker-mailserver/dhparams.pem /etc/dovecot/dh.pem
else
_notify 'inf' "Use ffdhe4096 for dhparams (dovecot)"
cp /etc/postfix/shared/ffdhe4096.pem /etc/dovecot/dh.pem
fi
else
_notify 'inf' "Use existing dovecot dhparams"
_notify 'warn' "Using self-generated dhparams is considered as insecure."
_notify 'warn' "Unless you known what you are doing, please remove /etc/dovecot/dh.pem."
fi
fi
}
function _setup_security_stack
{
_notify 'task' "Setting up Security Stack"
# recreate auto-generated file
local DMS_AMAVIS_FILE=/etc/amavis/conf.d/61-dms_auto_generated
echo "# WARNING: this file is auto-generated." >"${DMS_AMAVIS_FILE}"
echo "use strict;" >>"${DMS_AMAVIS_FILE}"
# Spamassassin
if [[ ${ENABLE_SPAMASSASSIN} -eq 0 ]]
then
_notify 'warn' "Spamassassin is disabled. You can enable it with 'ENABLE_SPAMASSASSIN=1'"
echo "@bypass_spam_checks_maps = (1);" >>"${DMS_AMAVIS_FILE}"
elif [[ ${ENABLE_SPAMASSASSIN} -eq 1 ]]
then
_notify 'inf' "Enabling and configuring spamassassin"
# shellcheck disable=SC2016
SA_TAG=${SA_TAG:="2.0"} && sed -i -r 's/^\$sa_tag_level_deflt (.*);/\$sa_tag_level_deflt = '"${SA_TAG}"';/g' /etc/amavis/conf.d/20-debian_defaults
# shellcheck disable=SC2016
SA_TAG2=${SA_TAG2:="6.31"} && sed -i -r 's/^\$sa_tag2_level_deflt (.*);/\$sa_tag2_level_deflt = '"${SA_TAG2}"';/g' /etc/amavis/conf.d/20-debian_defaults
# shellcheck disable=SC2016
SA_KILL=${SA_KILL:="6.31"} && sed -i -r 's/^\$sa_kill_level_deflt (.*);/\$sa_kill_level_deflt = '"${SA_KILL}"';/g' /etc/amavis/conf.d/20-debian_defaults
SA_SPAM_SUBJECT=${SA_SPAM_SUBJECT:="***SPAM*** "}
if [[ ${SA_SPAM_SUBJECT} == "undef" ]]
then
# shellcheck disable=SC2016
sed -i -r 's/^\$sa_spam_subject_tag (.*);/\$sa_spam_subject_tag = undef;/g' /etc/amavis/conf.d/20-debian_defaults
else
# shellcheck disable=SC2016
sed -i -r 's/^\$sa_spam_subject_tag (.*);/\$sa_spam_subject_tag = '"'${SA_SPAM_SUBJECT}'"';/g' /etc/amavis/conf.d/20-debian_defaults
fi
# activate short circuits when SA BAYES is certain it has spam or ham.
if [[ ${SA_SHORTCIRCUIT_BAYES_SPAM} -eq 1 ]]
then
# automatically activate the Shortcircuit Plugin
sed -i -r 's/^# loadplugin Mail::SpamAssassin::Plugin::Shortcircuit/loadplugin Mail::SpamAssassin::Plugin::Shortcircuit/g' /etc/spamassassin/v320.pre
sed -i -r 's/^# shortcircuit BAYES_99/shortcircuit BAYES_99/g' /etc/spamassassin/local.cf
fi
if [[ ${SA_SHORTCIRCUIT_BAYES_HAM} -eq 1 ]]
then
# automatically activate the Shortcircuit Plugin
sed -i -r 's/^# loadplugin Mail::SpamAssassin::Plugin::Shortcircuit/loadplugin Mail::SpamAssassin::Plugin::Shortcircuit/g' /etc/spamassassin/v320.pre
sed -i -r 's/^# shortcircuit BAYES_00/shortcircuit BAYES_00/g' /etc/spamassassin/local.cf
fi
if [[ -e /tmp/docker-mailserver/spamassassin-rules.cf ]]
then
cp /tmp/docker-mailserver/spamassassin-rules.cf /etc/spamassassin/
fi
if [[ ${SPAMASSASSIN_SPAM_TO_INBOX} -eq 1 ]]
then
_notify 'inf' "Configure Spamassassin/Amavis to put SPAM inbox"
sed -i "s/\$final_spam_destiny.*=.*$/\$final_spam_destiny = D_PASS;/g" /etc/amavis/conf.d/49-docker-mailserver
sed -i "s/\$final_bad_header_destiny.*=.*$/\$final_bad_header_destiny = D_PASS;/g" /etc/amavis/conf.d/49-docker-mailserver
else
sed -i "s/\$final_spam_destiny.*=.*$/\$final_spam_destiny = D_BOUNCE;/g" /etc/amavis/conf.d/49-docker-mailserver
sed -i "s/\$final_bad_header_destiny.*=.*$/\$final_bad_header_destiny = D_BOUNCE;/g" /etc/amavis/conf.d/49-docker-mailserver
if [[ ${DEFAULT_VARS['EXPLICITLY_DEFINED_SPAMASSASSIN_SPAM_TO_INBOX']} == "0" ]]
then
_notify 'warn' "Spam messages WILL NOT BE DELIVERED, you will NOT be notified of ANY message bounced. Please define SPAMASSASSIN_SPAM_TO_INBOX explicitly."
fi
fi
fi
# Clamav
if [[ ${ENABLE_CLAMAV} -eq 0 ]]
then
_notify 'warn' "Clamav is disabled. You can enable it with 'ENABLE_CLAMAV=1'"
echo "@bypass_virus_checks_maps = (1);" >>"${DMS_AMAVIS_FILE}"
elif [[ ${ENABLE_CLAMAV} -eq 1 ]]
then
_notify 'inf' "Enabling clamav"
fi
echo "1; # ensure a defined return" >>"${DMS_AMAVIS_FILE}"
chmod 444 "${DMS_AMAVIS_FILE}"
# Fail2ban
if [[ ${ENABLE_FAIL2BAN} -eq 1 ]]
then
_notify 'inf' "Fail2ban enabled"
if [[ -e /tmp/docker-mailserver/fail2ban-fail2ban.cf ]]
then
cp /tmp/docker-mailserver/fail2ban-fail2ban.cf /etc/fail2ban/fail2ban.local
fi
if [[ -e /tmp/docker-mailserver/fail2ban-jail.cf ]]
then
cp /tmp/docker-mailserver/fail2ban-jail.cf /etc/fail2ban/jail.local
fi
else
# disable logrotate config for fail2ban if not enabled
rm -f /etc/logrotate.d/fail2ban
fi
# fix cron.daily for spamassassin
sed -i -e 's~invoke-rc.d spamassassin reload~/etc/init\.d/spamassassin reload~g' /etc/cron.daily/spamassassin
# copy user provided configuration files if provided
if [[ -f /tmp/docker-mailserver/amavis.cf ]]
then
cp /tmp/docker-mailserver/amavis.cf /etc/amavis/conf.d/50-user
fi
}
function _setup_logrotate
{
_notify 'inf' "Setting up logrotate"
LOGROTATE='/var/log/mail/mail.log\n{\n compress\n copytruncate\n delaycompress\n'
case "${LOGROTATE_INTERVAL}" in
"daily" )
_notify 'inf' "Setting postfix logrotate interval to daily"
LOGROTATE="${LOGROTATE} rotate 1\n daily\n"
;;
"weekly" )
_notify 'inf' "Setting postfix logrotate interval to weekly"
LOGROTATE="${LOGROTATE} rotate 1\n weekly\n"
;;
"monthly" )
_notify 'inf' "Setting postfix logrotate interval to monthly"
LOGROTATE="${LOGROTATE} rotate 1\n monthly\n"
;;
* ) _notify 'warn' 'LOGROTATE_INTERVAL not found in _setup_logrotate' ;;
esac
LOGROTATE="${LOGROTATE}}"
echo -e "${LOGROTATE}" > /etc/logrotate.d/maillog
}
function _setup_mail_summary
{
_notify 'inf' "Enable postfix summary with recipient ${PFLOGSUMM_RECIPIENT}"
case "${PFLOGSUMM_TRIGGER}" in
"daily_cron" )
_notify 'inf' "Creating daily cron job for pflogsumm report"
echo "#!/bin/bash" > /etc/cron.daily/postfix-summary
echo "/usr/local/bin/report-pflogsumm-yesterday ${HOSTNAME} ${PFLOGSUMM_RECIPIENT} ${PFLOGSUMM_SENDER}" >> /etc/cron.daily/postfix-summary
chmod +x /etc/cron.daily/postfix-summary
;;
"logrotate" )
_notify 'inf' "Add postrotate action for pflogsumm report"
sed -i "s|}| postrotate\n /usr/local/bin/postfix-summary ${HOSTNAME} ${PFLOGSUMM_RECIPIENT} ${PFLOGSUMM_SENDER}\n endscript\n}\n|" /etc/logrotate.d/maillog
;;
* ) _notify 'err' 'PFLOGSUMM_TRIGGER not found in _setup_mail_summery' ;;
esac
}
function _setup_logwatch
{
_notify 'inf' "Enable logwatch reports with recipient ${LOGWATCH_RECIPIENT}"
echo "LogFile = /var/log/mail/freshclam.log" >> /etc/logwatch/conf/logfiles/clam-update.conf
case "${LOGWATCH_INTERVAL}" in
"daily" )
_notify 'inf' "Creating daily cron job for logwatch reports"
echo "#!/bin/bash" > /etc/cron.daily/logwatch
echo "/usr/sbin/logwatch --range Yesterday --hostname ${HOSTNAME} --mailto ${LOGWATCH_RECIPIENT}" \
>> /etc/cron.daily/logwatch
chmod 744 /etc/cron.daily/logwatch
;;
"weekly" )
_notify 'inf' "Creating weekly cron job for logwatch reports"
echo "#!/bin/bash" > /etc/cron.weekly/logwatch
echo "/usr/sbin/logwatch --range 'between -7 days and -1 days' --hostname ${HOSTNAME} --mailto ${LOGWATCH_RECIPIENT}" \
>> /etc/cron.weekly/logwatch
chmod 744 /etc/cron.weekly/logwatch
;;
* ) _notify 'warn' 'LOGWATCH_INTERVAL not found in _setup_logwatch' ;;
esac
}
function _setup_user_patches()
{
if [[ -f /tmp/docker-mailserver/user-patches.sh ]]
then
_notify 'inf' 'Executing user-patches.sh'
chmod +x /tmp/docker-mailserver/user-patches.sh &>/dev/null || true
if [[ -x /tmp/docker-mailserver/user-patches.sh ]]
then
/tmp/docker-mailserver/user-patches.sh
_notify 'inf' "Executed 'config/user-patches.sh'"
else
_notify 'err' "Could not execute user-patches.sh. Not executable!"
fi
else
_notify 'inf' "No user patches executed because optional '/tmp/docker-mailserver/user-patches.sh' is not provided."
fi
}
function _setup_environment() {
_notify 'task' 'Setting up /etc/environment'
local banner="# docker environment"
local var
if ! grep -q "${banner}" /etc/environment
then
echo "${banner}" >> /etc/environment
echo "VIRUSMAILS_DELETE_DELAY=${DEFAULT_VARS["VIRUSMAILS_DELETE_DELAY"]}" >> /etc/environment
fi
}
##########################################################################
# << Setup Stack
##########################################################################
##########################################################################
# >> Fix Stack
#
# Description: Place functions for temporary workarounds and fixes here
##########################################################################
function fix
{
_notify 'taskgrg' "Post-configuration checks..."
for FUNC in "${FUNCS_FIX[@]}"
do
if ! ${FUNC}
then
_defunc
fi
done
_notify 'taskgrg' "Remove leftover pid files from a stop/start"
rm -rf /var/run/*.pid /var/run/*/*.pid
touch /dev/shm/supervisor.sock
}
function _fix_var_mail_permissions
{
_notify 'task' 'Checking /var/mail permissions'
# dix permissions, but skip this if 3 levels deep the user id is already set
if [[ $(find /var/mail -maxdepth 3 -a \( \! -user 5000 -o \! -group 5000 \) | grep -c .) -ne 0 ]]
then
_notify 'inf' "Fixing /var/mail permissions"
chown -R 5000:5000 /var/mail
else
_notify 'inf' "Permissions in /var/mail look OK"
return 0
fi
}
function _fix_var_amavis_permissions
{
if [[ ${ONE_DIR} -eq 0 ]]
then
amavis_state_dir=/var/lib/amavis
else
amavis_state_dir=/var/mail-state/lib-amavis
fi
# shellcheck disable=SC2016
_notify 'task' 'Checking $amavis_state_dir permissions'
amavis_permissions_status=$(find -H "${amavis_state_dir}" -maxdepth 3 -a \( \! -user amavis -o \! -group amavis \))
if [[ -n ${amavis_permissions_status} ]]
then
_notify 'inf' "Fixing ${amavis_state_dir} permissions"
chown -hR amavis:amavis "${amavis_state_dir}"
else
_notify 'inf' "Permissions in ${amavis_state_dir} look OK"
return 0
fi
}
function _fix_cleanup_clamav
{
_notify 'task' 'Cleaning up disabled Clamav'
rm -f /etc/logrotate.d/clamav-*
rm -f /etc/cron.d/clamav-freshclam
}
function _fix_cleanup_spamassassin
{
_notify 'task' 'Cleaning up disabled spamassassin'
rm -f /etc/cron.daily/spamassassin
}
##########################################################################
# << Fix Stack
##########################################################################
##########################################################################
# >> Misc Stack
#
# Description: Place functions that do not fit in the sections above here
##########################################################################
function misc
{
_notify 'taskgrp' 'Starting Misc'
for FUNC in "${FUNCS_MISC[@]}"
do
if ! ${FUNC}
then
_defunc
fi
done
}
function _misc_save_states
{
# consolidate all states into a single directory (`/var/mail-state`) to allow persistence using docker volumes
statedir=/var/mail-state
if [[ ${ONE_DIR} -eq 1 ]] && [[ -d ${statedir} ]]
then
_notify 'inf' "Consolidating all state onto ${statedir}"
local FILES=(
/var/spool/postfix
/var/lib/postfix
/var/lib/amavis
/var/lib/clamav
/var/lib/spamassassin
/var/lib/fail2ban
/var/lib/postgrey
/var/lib/dovecot
)
for d in "${FILES[@]}"
do
dest="${statedir}/$(echo "${d}" | sed -e 's/.var.//; s/\//-/g')"
if [[ -d ${dest} ]]
then
_notify 'inf' " Destination ${dest} exists, linking ${d} to it"
rm -rf "${d}"
ln -s "${dest}" "${d}"
elif [[ -d ${d} ]]
then
_notify 'inf' " Moving contents of ${d} to ${dest}:" "$(ls "${d}")"
mv "${d}" "${dest}"
ln -s "${dest}" "${d}"
else
_notify 'inf' " Linking ${d} to ${dest}"
mkdir -p "${dest}"
ln -s "${dest}" "${d}"
fi
done
_notify 'inf' 'Fixing /var/mail-state/* permissions'
chown -R clamav /var/mail-state/lib-clamav
chown -R postfix /var/mail-state/lib-postfix
chown -R postgrey /var/mail-state/lib-postgrey
chown -R debian-spamd /var/mail-state/lib-spamassassin
chown -R postfix /var/mail-state/spool-postfix
fi
}
##########################################################################
# >> Start Daemons
##########################################################################
function start_daemons
{
_notify 'taskgrp' 'Starting mail server'
for FUNC in "${DAEMONS_START[@]}"
do
if ! ${FUNC}
then
_defunc
fi
done
}
function _start_daemons_cron
{
_notify 'task' 'Starting cron' 'n'
supervisorctl start cron
}
function _start_daemons_rsyslog
{
_notify 'task' 'Starting rsyslog ' 'n'
supervisorctl start rsyslog
}
function _start_daemons_saslauthd
{
_notify 'task' 'Starting saslauthd' 'n'
supervisorctl start "saslauthd_${SASLAUTHD_MECHANISMS}"
}
function _start_daemons_fail2ban
{
_notify 'task' 'Starting fail2ban ' 'n'
touch /var/log/auth.log
# delete fail2ban.sock that probably was left here after container restart
if [[ -e /var/run/fail2ban/fail2ban.sock ]]
then
rm /var/run/fail2ban/fail2ban.sock
fi
supervisorctl start fail2ban
}
function _start_daemons_opendkim
{
_notify 'task' 'Starting opendkim ' 'n'
supervisorctl start opendkim
}
function _start_daemons_opendmarc
{
_notify 'task' 'Starting opendmarc ' 'n'
supervisorctl start opendmarc
}
function _start_daemons_postsrsd
{
_notify 'task' 'Starting postsrsd ' 'n'
supervisorctl start postsrsd
}
function _start_daemons_postfix
{
_notify 'task' 'Starting postfix' 'n'
supervisorctl start postfix
}
function _start_daemons_dovecot
{
# Here we are starting sasl and imap, not pop3 because it's disabled by default
_notify 'task' 'Starting dovecot services' 'n'
if [[ ${ENABLE_POP3} -eq 1 ]]
then
_notify 'task' 'Starting pop3 services' 'n'
mv /etc/dovecot/protocols.d/pop3d.protocol.disab /etc/dovecot/protocols.d/pop3d.protocol
fi
if [[ -f /tmp/docker-mailserver/dovecot.cf ]]
then
cp /tmp/docker-mailserver/dovecot.cf /etc/dovecot/local.conf
fi
supervisorctl start dovecot
# TODO fix: on integration test
# doveadm: Error: userdb lookup: connect(/var/run/dovecot/auth-userdb) failed: No such file or directory
# doveadm: Fatal: user listing failed
# if [[ ${ENABLE_LDAP} -ne 1 ]]
# then
# echo "Listing users"
# /usr/sbin/dovecot user '*'
# fi
}
function _start_daemons_fetchmail
{
_notify 'task' 'Starting fetchmail' 'n'
/usr/local/bin/setup-fetchmail
supervisorctl start fetchmail
}
function _start_daemons_clamav
{
_notify 'task' 'Starting clamav' 'n'
supervisorctl start clamav
}
function _start_daemons_postgrey
{
_notify 'task' 'Starting postgrey' 'n'
rm -f /var/run/postgrey/postgrey.pid
supervisorctl start postgrey
}
function _start_daemons_amavis
{
_notify 'task' 'Starting amavis' 'n'
supervisorctl start amavis
}
##########################################################################
# << Start Daemons
##########################################################################
##########################################################################
# Start check for update postfix-accounts and postfix-virtual
##########################################################################
function _start_changedetector
{
_notify 'task' 'Starting changedetector' 'n'
supervisorctl start changedetector
}
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# ! CARE --> DON'T CHANGE, unless you exactly know what you are doing
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# shellcheck source=/dev/null
. /usr/local/bin/helper_functions.sh
if [[ ${DEFAULT_VARS["DMS_DEBUG"]} -eq 1 ]]
then
_notify 'taskgrp' ""
_notify 'taskgrp' "#"
_notify 'taskgrp' "#"
_notify 'taskgrp' "# ENV"
_notify 'taskgrp' "#"
_notify 'taskgrp' "#"
_notify 'taskgrp' ""
printenv
fi
_notify 'taskgrp' ""
_notify 'taskgrp' "#"
_notify 'taskgrp' "#"
_notify 'taskgrp' "# docker-mailserver"
_notify 'taskgrp' "#"
_notify 'taskgrp' "#"
_notify 'taskgrp' ""
register_functions
check
setup
fix
misc
start_daemons
_notify 'taskgrp' ""
_notify 'taskgrp' "#"
_notify 'taskgrp' "# ${HOSTNAME} is up and running"
_notify 'taskgrp' "#"
_notify 'taskgrp' ""
touch /var/log/mail/mail.log
tail -fn 0 /var/log/mail/mail.log
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# ! CARE --> DON'T CHANGE, unless you exactly know what you are doing
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
exit 0
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