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docker-mailserver/target/scripts/startup/setup-stack.sh

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#! /bin/bash
function setup
{
_log 'info' 'Configuring mail server'
for FUNC in "${FUNCS_SETUP[@]}"
do
${FUNC}
done
}
function _setup_supervisor
{
if ! grep -q "loglevel = ${SUPERVISOR_LOGLEVEL}" /etc/supervisor/supervisord.conf
then
case "${SUPERVISOR_LOGLEVEL}" in
( 'critical' | 'error' | 'info' | 'debug' )
sed -i -E \
"s|(loglevel).*|\1 = ${SUPERVISOR_LOGLEVEL}|g" \
/etc/supervisor/supervisord.conf
supervisorctl reload
exit
;;
( 'warn' )
return 0
;;
( * )
_log 'warn' \
"SUPERVISOR_LOGLEVEL '${SUPERVISOR_LOGLEVEL}' unknown. Using default 'warn'"
;;
esac
fi
return 0
}
function _setup_default_vars
{
_log 'debug' 'Setting up default variables'
: >/root/.bashrc # make DMS variables available in login shells and their subprocesses
: >/etc/dms-settings # this file can be sourced by other scripts
local VAR
for VAR in "${!VARS[@]}"
do
echo "export ${VAR}='${VARS[${VAR}]}'" >>/root/.bashrc
echo "${VAR}='${VARS[${VAR}]}'" >>/etc/dms-settings
done
sort -o /root/.bashrc /root/.bashrc
sort -o /etc/dms-settings /etc/dms-settings
}
# 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
{
_log 'debug' 'Setting file and directory 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
{
_log 'debug' 'Setting up configuration checksum file'
if [[ -d /tmp/docker-mailserver ]]
then
_log 'trace' "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
_log 'trace' "Creating empty '${CHKSUM_FILE}' (no config)"
touch "${CHKSUM_FILE}"
fi
}
function _setup_mailname
{
_log 'debug' "Setting up mailname and creating '/etc/mailname'"
echo "${DOMAINNAME}" >/etc/mailname
}
function _setup_amavis
{
if [[ ${ENABLE_AMAVIS} -eq 1 ]]
then
_log 'debug' 'Setting up Amavis'
sed -i \
"s|^#\$myhostname = \"mail.example.com\";|\$myhostname = \"${HOSTNAME}\";|" \
/etc/amavis/conf.d/05-node_id
else
_log 'debug' "Removing Amavis from Postfix's configuration"
sed -i 's|content_filter =.*|content_filter =|' /etc/postfix/main.cf
[[ ${ENABLE_CLAMAV} -eq 1 ]] && _log 'warn' 'ClamAV will not work when Amavis is disabled. Remove ENABLE_AMAVIS=0 from your configuration to fix it.'
[[ ${ENABLE_SPAMASSASSIN} -eq 1 ]] && _log 'warn' 'Spamassassin will not work when Amavis is disabled. Remove ENABLE_AMAVIS=0 from your configuration to fix it.'
fi
}
function _setup_dmarc_hostname
{
_log 'debug' 'Setting up DMARC'
sed -i -e \
"s|^AuthservID.*$|AuthservID ${HOSTNAME}|g" \
-e "s|^TrustedAuthservIDs.*$|TrustedAuthservIDs ${HOSTNAME}|g" \
/etc/opendmarc.conf
}
function _setup_postfix_hostname
{
_log 'debug' 'Applying hostname and domainname to Postfix'
postconf -e "myhostname = ${HOSTNAME}"
postconf -e "mydomain = ${DOMAINNAME}"
}
function _setup_dovecot_hostname
{
_log 'debug' 'Applying hostname to Dovecot'
sed -i \
"s|^#hostname =.*$|hostname = '${HOSTNAME}'|g" \
/etc/dovecot/conf.d/15-lda.conf
}
function _setup_dovecot
{
_log 'debug' 'Setting up Dovecot'
cp -a /usr/share/dovecot/protocols.d /etc/dovecot/
# disable pop3 (it will be eventually enabled later in the script, if requested)
mv /etc/dovecot/protocols.d/pop3d.protocol /etc/dovecot/protocols.d/pop3d.protocol.disab
mv /etc/dovecot/protocols.d/managesieved.protocol /etc/dovecot/protocols.d/managesieved.protocol.disab
sed -i -e 's|#ssl = yes|ssl = yes|g' /etc/dovecot/conf.d/10-master.conf
sed -i -e 's|#port = 993|port = 993|g' /etc/dovecot/conf.d/10-master.conf
sed -i -e 's|#port = 995|port = 995|g' /etc/dovecot/conf.d/10-master.conf
sed -i -e 's|#ssl = yes|ssl = required|g' /etc/dovecot/conf.d/10-ssl.conf
sed -i 's|^postmaster_address = .*$|postmaster_address = '"${POSTMASTER_ADDRESS}"'|g' /etc/dovecot/conf.d/15-lda.conf
if ! grep -q -E '^stats_writer_socket_path=' /etc/dovecot/dovecot.conf
then
printf '\n%s\n' 'stats_writer_socket_path=' >>/etc/dovecot/dovecot.conf
fi
# set mail_location according to mailbox format
case "${DOVECOT_MAILBOX_FORMAT}" in
( 'sdbox' | 'mdbox' )
_log 'trace' "Dovecot ${DOVECOT_MAILBOX_FORMAT} format configured"
sed -i -e \
"s|^mail_location = .*$|mail_location = ${DOVECOT_MAILBOX_FORMAT}:\/var\/mail\/%d\/%n|g" \
/etc/dovecot/conf.d/10-mail.conf
_log 'trace' 'Enabling cron job for dbox purge'
mv /etc/cron.d/dovecot-purge.disabled /etc/cron.d/dovecot-purge
chmod 644 /etc/cron.d/dovecot-purge
;;
( * )
_log 'trace' 'Dovecot default format (maildir) configured'
sed -i -e 's|^mail_location = .*$|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
_log 'trace' '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
_log 'debug' '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
{
_log 'debug' '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 ]] || [[ ${ENABLE_QUOTAS} -eq 0 ]]
then
# disable dovecot quota in docevot confs
if [[ -f /etc/dovecot/conf.d/90-quota.conf ]]
then
mv /etc/dovecot/conf.d/90-quota.conf /etc/dovecot/conf.d/90-quota.conf.disab
sed -i \
"s|mail_plugins = \$mail_plugins quota|mail_plugins = \$mail_plugins|g" \
/etc/dovecot/conf.d/10-mail.conf
sed -i \
"s|mail_plugins = \$mail_plugins imap_quota|mail_plugins = \$mail_plugins|g" \
/etc/dovecot/conf.d/20-imap.conf
fi
# disable quota policy check in postfix
sed -i "s|check_policy_service inet:localhost:65265||g" /etc/postfix/main.cf
else
if [[ -f /etc/dovecot/conf.d/90-quota.conf.disab ]]
then
mv /etc/dovecot/conf.d/90-quota.conf.disab /etc/dovecot/conf.d/90-quota.conf
sed -i \
"s|mail_plugins = \$mail_plugins|mail_plugins = \$mail_plugins quota|g" \
/etc/dovecot/conf.d/10-mail.conf
sed -i \
"s|mail_plugins = \$mail_plugin|mail_plugins = \$mail_plugins imap_quota|g" \
/etc/dovecot/conf.d/20-imap.conf
fi
local MESSAGE_SIZE_LIMIT_MB=$((POSTFIX_MESSAGE_SIZE_LIMIT / 1000000))
local MAILBOX_LIMIT_MB=$((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 [[ -d /tmp/docker-mailserver ]] && [[ ! -f /tmp/docker-mailserver/dovecot-quotas.cf ]]
then
_log 'trace' "'/tmp/docker-mailserver/dovecot-quotas.cf' is not provided. Using default quotas."
: >/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
{
_log 'debug' 'Setting up Dovecot Local User'
_create_accounts
[[ ${ENABLE_LDAP} -eq 1 ]] && return 0
if [[ ! -f /tmp/docker-mailserver/postfix-accounts.cf ]]
then
_log 'trace' "'/tmp/docker-mailserver/postfix-accounts.cf' not provided, no mail account created"
fi
local SLEEP_PERIOD='10'
for (( COUNTER = 11 ; COUNTER >= 0 ; COUNTER-- ))
do
if [[ $(grep -cE '.+@.+\|' /tmp/docker-mailserver/postfix-accounts.cf) -ge 1 ]]
then
return 0
else
_log 'warn' "You need at least one email account to start Dovecot ($(( ( COUNTER + 1 ) * SLEEP_PERIOD ))s left for account creation before shutdown)"
sleep "${SLEEP_PERIOD}"
fi
done
_shutdown 'No accounts provided - Dovecot could not be started'
}
function _setup_ldap
{
_log 'debug' 'Setting up LDAP'
_log 'trace' 'Checking for custom configs'
for i in 'users' 'groups' 'aliases' 'domains'
do
local FPATH="/tmp/docker-mailserver/ldap-${i}.cf"
if [[ -f ${FPATH} ]]
then
cp "${FPATH}" "/etc/postfix/ldap-${i}.cf"
fi
done
_log 'trace' 'Starting to override configs'
local FILES=(
/etc/postfix/ldap-users.cf
/etc/postfix/ldap-groups.cf
/etc/postfix/ldap-aliases.cf
/etc/postfix/ldap-domains.cf
/etc/postfix/ldap-senders.cf
/etc/postfix/maps/sender_login_maps.ldap
)
for FILE in "${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}"
[[ ${FILE} =~ ldap-senders ]] && export LDAP_QUERY_FILTER="${LDAP_QUERY_FILTER_SENDERS}"
configomat.sh "LDAP_" "${FILE}"
done
_log 'trace' "Configuring Dovecot LDAP"
declare -A DOVECOT_LDAP_MAPPING
DOVECOT_LDAP_MAPPING['DOVECOT_BASE']="${DOVECOT_BASE:="${LDAP_SEARCH_BASE}"}"
DOVECOT_LDAP_MAPPING['DOVECOT_DN']="${DOVECOT_DN:="${LDAP_BIND_DN}"}"
DOVECOT_LDAP_MAPPING['DOVECOT_DNPASS']="${DOVECOT_DNPASS:="${LDAP_BIND_PW}"}"
DOVECOT_LDAP_MAPPING['DOVECOT_URIS']="${DOVECOT_URIS:="${DOVECOT_HOSTS:="${LDAP_SERVER_HOST}"}"}"
# Add protocol to DOVECOT_URIS so that we can use dovecot's "uris" option:
# https://doc.dovecot.org/configuration_manual/authentication/ldap/
if [[ ${DOVECOT_LDAP_MAPPING["DOVECOT_URIS"]} != *'://'* ]]
then
DOVECOT_LDAP_MAPPING['DOVECOT_URIS']="ldap://${DOVECOT_LDAP_MAPPING["DOVECOT_URIS"]}"
fi
# Default DOVECOT_PASS_FILTER to the same value as DOVECOT_USER_FILTER
DOVECOT_LDAP_MAPPING['DOVECOT_PASS_FILTER']="${DOVECOT_PASS_FILTER:="${DOVECOT_USER_FILTER}"}"
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 "${DOMAINNAME}" >>/tmp/vhost.tmp
_log 'trace' 'Enabling Dovecot LDAP authentication'
sed -i -e '/\!include auth-ldap\.conf\.ext/s/^#//' /etc/dovecot/conf.d/10-auth.conf
sed -i -e '/\!include auth-passwdfile\.inc/s/^/#/' /etc/dovecot/conf.d/10-auth.conf
_log 'trace' "Configuring LDAP"
if [[ -f /etc/postfix/ldap-users.cf ]]
then
postconf -e 'virtual_mailbox_maps = ldap:/etc/postfix/ldap-users.cf'
else
_log 'warn' "'/etc/postfix/ldap-users.cf' not found"
fi
if [[ -f /etc/postfix/ldap-domains.cf ]]
then
postconf -e 'virtual_mailbox_domains = /etc/postfix/vhost, ldap:/etc/postfix/ldap-domains.cf'
else
_log 'warn' "'/etc/postfix/ldap-domains.cf' not found"
fi
if [[ -f /etc/postfix/ldap-aliases.cf ]] && [[ -f /etc/postfix/ldap-groups.cf ]]
then
postconf -e 'virtual_alias_maps = ldap:/etc/postfix/ldap-aliases.cf, ldap:/etc/postfix/ldap-groups.cf'
else
_log 'warn' "'/etc/postfix/ldap-aliases.cf' and / or '/etc/postfix/ldap-groups.cf' not found"
fi
# shellcheck disable=SC2016
sed -i 's|mydestination = \$myhostname, |mydestination = |' /etc/postfix/main.cf
return 0
}
function _setup_postgrey
{
_log 'debug' 'Configuring Postgrey'
sed -i -E \
's|, reject_rbl_client zen.spamhaus.org$|, reject_rbl_client zen.spamhaus.org, 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
{
_log 'debug' '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 = ${POSTSCREEN_ACTION}|" /etc/postfix/main.cf
}
function _setup_postfix_sizelimits
{
_log 'trace' "Configuring Postfix message size limit to '${POSTFIX_MESSAGE_SIZE_LIMIT}'"
postconf -e "message_size_limit = ${POSTFIX_MESSAGE_SIZE_LIMIT}"
_log 'trace' "Configuring Postfix mailbox size limit to '${POSTFIX_MAILBOX_SIZE_LIMIT}'"
postconf -e "mailbox_size_limit = ${POSTFIX_MAILBOX_SIZE_LIMIT}"
_log 'trace' "Configuring Postfix virtual mailbox size limit to '${POSTFIX_MAILBOX_SIZE_LIMIT}'"
postconf -e "virtual_mailbox_limit = ${POSTFIX_MAILBOX_SIZE_LIMIT}"
}
function _setup_clamav_sizelimit
{
_log 'trace' "Setting ClamAV message scan size limit to '${CLAMAV_MESSAGE_SIZE_LIMIT}'"
sedfile -i "s/^MaxFileSize.*/MaxFileSize ${CLAMAV_MESSAGE_SIZE_LIMIT}/" /etc/clamav/clamd.conf
}
function _setup_postfix_smtputf8
{
_log 'trace' "Disabling Postfix's smtputf8 support"
postconf -e "smtputf8_enable = no"
}
function _setup_spoof_protection
{
_log 'trace' 'Configuring spoof protection'
sed -i \
's|smtpd_sender_restrictions =|smtpd_sender_restrictions = reject_authenticated_sender_login_mismatch,|' \
/etc/postfix/main.cf
if [[ ${ENABLE_LDAP} -eq 1 ]]
then
if [[ -z ${LDAP_QUERY_FILTER_SENDERS} ]]
then
postconf -e 'smtpd_sender_login_maps = ldap:/etc/postfix/ldap-users.cf ldap:/etc/postfix/ldap-aliases.cf ldap:/etc/postfix/ldap-groups.cf'
else
postconf -e 'smtpd_sender_login_maps = ldap:/etc/postfix/ldap-senders.cf'
fi
else
if [[ -f /etc/postfix/regexp ]]
then
postconf -e 'smtpd_sender_login_maps = unionmap:{ texthash:/etc/postfix/virtual, hash:/etc/aliases, pcre:/etc/postfix/maps/sender_login_maps.pcre, pcre:/etc/postfix/regexp }'
else
postconf -e 'smtpd_sender_login_maps = texthash:/etc/postfix/virtual, hash:/etc/aliases, pcre:/etc/postfix/maps/sender_login_maps.pcre'
fi
fi
}
function _setup_postfix_access_control
{
_log 'trace' '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 ]] && [[ ! -f /etc/postfix/sasl/smtpd.conf ]]
then
cat >/etc/postfix/sasl/smtpd.conf << EOF
pwcheck_method: saslauthd
mech_list: plain login
EOF
fi
if [[ ${ENABLE_SASLAUTHD} -eq 0 ]] && [[ ${SMTP_ONLY} -eq 1 ]]
then
sed -i -E \
's|^smtpd_sasl_auth_enable =.*|smtpd_sasl_auth_enable = no|g' \
/etc/postfix/main.cf
sed -i -E \
's|^ -o smtpd_sasl_auth_enable=.*| -o smtpd_sasl_auth_enable=no|g' \
/etc/postfix/master.cf
fi
}
function _setup_saslauthd
{
_log 'debug' 'Setting up SASLAUTHD'
# checking env vars and setting defaults
[[ -z ${SASLAUTHD_MECHANISMS:-} ]] && SASLAUTHD_MECHANISMS=pam
[[ -z ${SASLAUTHD_LDAP_SERVER} ]] && SASLAUTHD_LDAP_SERVER="${LDAP_SERVER_HOST}"
[[ -z ${SASLAUTHD_LDAP_FILTER} ]] && SASLAUTHD_LDAP_FILTER='(&(uniqueIdentifier=%u)(mailEnabled=TRUE))'
[[ -z ${SASLAUTHD_LDAP_BIND_DN} ]] && SASLAUTHD_LDAP_BIND_DN="${LDAP_BIND_DN}"
[[ -z ${SASLAUTHD_LDAP_PASSWORD} ]] && SASLAUTHD_LDAP_PASSWORD="${LDAP_BIND_PW}"
[[ -z ${SASLAUTHD_LDAP_SEARCH_BASE} ]] && SASLAUTHD_LDAP_SEARCH_BASE="${LDAP_SEARCH_BASE}"
if [[ ${SASLAUTHD_LDAP_SERVER} != *'://'* ]]
then
SASLAUTHD_LDAP_SERVER="ldap://${SASLAUTHD_LDAP_SERVER}"
fi
[[ -z ${SASLAUTHD_LDAP_START_TLS} ]] && SASLAUTHD_LDAP_START_TLS=no
[[ -z ${SASLAUTHD_LDAP_TLS_CHECK_PEER} ]] && SASLAUTHD_LDAP_TLS_CHECK_PEER=no
[[ -z ${SASLAUTHD_LDAP_AUTH_METHOD} ]] && SASLAUTHD_LDAP_AUTH_METHOD=bind
if [[ -z ${SASLAUTHD_LDAP_TLS_CACERT_FILE} ]]
then
SASLAUTHD_LDAP_TLS_CACERT_FILE=''
else
SASLAUTHD_LDAP_TLS_CACERT_FILE="ldap_tls_cacert_file: ${SASLAUTHD_LDAP_TLS_CACERT_FILE}"
fi
if [[ -z ${SASLAUTHD_LDAP_TLS_CACERT_DIR} ]]
then
SASLAUTHD_LDAP_TLS_CACERT_DIR=''
else
SASLAUTHD_LDAP_TLS_CACERT_DIR="ldap_tls_cacert_dir: ${SASLAUTHD_LDAP_TLS_CACERT_DIR}"
fi
if [[ -z ${SASLAUTHD_LDAP_PASSWORD_ATTR} ]]
then
SASLAUTHD_LDAP_PASSWORD_ATTR=''
else
SASLAUTHD_LDAP_PASSWORD_ATTR="ldap_password_attr: ${SASLAUTHD_LDAP_PASSWORD_ATTR}"
fi
if [[ -z ${SASLAUTHD_LDAP_MECH} ]]
then
SASLAUTHD_LDAP_MECH=''
else
SASLAUTHD_LDAP_MECH="ldap_mech: ${SASLAUTHD_LDAP_MECH}"
fi
if [[ ! -f /etc/saslauthd.conf ]]
then
_log 'trace' 'Creating /etc/saslauthd.conf'
cat > /etc/saslauthd.conf << EOF
ldap_servers: ${SASLAUTHD_LDAP_SERVER}
ldap_auth_method: ${SASLAUTHD_LDAP_AUTH_METHOD}
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}
${SASLAUTHD_LDAP_TLS_CACERT_FILE}
${SASLAUTHD_LDAP_TLS_CACERT_DIR}
${SASLAUTHD_LDAP_PASSWORD_ATTR}
${SASLAUTHD_LDAP_MECH}
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
{
_log 'debug' 'Setting up Postfix aliases'
_create_aliases
}
function _setup_SRS
{
_log 'debug' '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
{
_log 'debug' 'Setting up DKIM'
mkdir -p /etc/opendkim && touch /etc/opendkim/SigningTable
# check if any keys are available
if [[ -e "/tmp/docker-mailserver/opendkim/KeyTable" ]]
then
cp -a /tmp/docker-mailserver/opendkim/* /etc/opendkim/
_log 'trace' "DKIM keys added for: $(ls /etc/opendkim/keys/)"
_log 'trace' "Changing permissions on '/etc/opendkim'"
chown -R opendkim:opendkim /etc/opendkim/
chmod -R 0700 /etc/opendkim/keys/
else
_log 'debug' 'No DKIM key(s) provided - check the documentation on how to get your keys'
[[ ! -f /etc/opendkim/KeyTable ]] && touch /etc/opendkim/KeyTable
fi
# setup nameservers parameter 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
_log 'trace' "Nameservers added to '/etc/opendkim.conf'"
fi
}
function _setup_postfix_vhost
{
_log 'debug' 'Setting up Postfix vhost'
_create_postfix_vhost
}
function _setup_postfix_inet_protocols
{
_log 'trace' 'Setting up POSTFIX_INET_PROTOCOLS option'
postconf -e "inet_protocols = ${POSTFIX_INET_PROTOCOLS}"
}
function _setup_dovecot_inet_protocols
{
local PROTOCOL
_log 'trace' 'Setting up DOVECOT_INET_PROTOCOLS option'
# https://dovecot.org/doc/dovecot-example.conf
if [[ ${DOVECOT_INET_PROTOCOLS} == "ipv4" ]]
then
PROTOCOL='*' # IPv4 only
elif [[ ${DOVECOT_INET_PROTOCOLS} == "ipv6" ]]
then
PROTOCOL='[::]' # IPv6 only
else
# Unknown value, panic.
dms_panic__invalid_value 'DOVECOT_INET_PROTOCOLS' "${DOVECOT_INET_PROTOCOLS}"
fi
sedfile -i "s|^#listen =.*|listen = ${PROTOCOL}|g" /etc/dovecot/dovecot.conf
}
function _setup_docker_permit
{
_log 'debug' 'Setting up PERMIT_DOCKER option'
local CONTAINER_IP CONTAINER_NETWORK
unset CONTAINER_NETWORKS
declare -a CONTAINER_NETWORKS
CONTAINER_IP=$(ip addr show "${NETWORK_INTERFACE}" | \
grep 'inet ' | sed 's|[^0-9\.\/]*||g' | cut -d '/' -f 1)
CONTAINER_NETWORK=$(echo "${CONTAINER_IP}" | cut -d '.' -f1-2).0.0
if [[ -z ${CONTAINER_IP} ]]
then
_log 'error' 'Detecting the container IP address failed'
dms_panic__misconfigured 'NETWORK_INTERFACE' 'Network Setup [docker_permit]'
fi
while read -r IP
do
CONTAINER_NETWORKS+=("${IP}")
done < <(ip -o -4 addr show type veth | grep -E -o '[0-9\.]+/[0-9]+')
case "${PERMIT_DOCKER}" in
( 'none' )
_log 'trace' "Clearing Postfix's 'mynetworks'"
postconf -e "mynetworks ="
;;
( 'connected-networks' )
for NETWORK in "${CONTAINER_NETWORKS[@]}"
do
NETWORK=$(_sanitize_ipv4_to_subnet_cidr "${NETWORK}")
_log 'trace' "Adding Docker network '${NETWORK}' to Postfix's 'mynetworks'"
postconf -e "$(postconf | grep '^mynetworks =') ${NETWORK}"
echo "${NETWORK}" >> /etc/opendmarc/ignore.hosts
echo "${NETWORK}" >> /etc/opendkim/TrustedHosts
done
;;
( 'container' )
_log 'trace' "Adding container IP address to Postfix's 'mynetworks'"
postconf -e "$(postconf | grep '^mynetworks =') ${CONTAINER_IP}/32"
echo "${CONTAINER_IP}/32" >> /etc/opendmarc/ignore.hosts
echo "${CONTAINER_IP}/32" >> /etc/opendkim/TrustedHosts
;;
( 'host' )
_log 'trace' "Adding '${CONTAINER_NETWORK}/16' to Postfix's 'mynetworks'"
postconf -e "$(postconf | grep '^mynetworks =') ${CONTAINER_NETWORK}/16"
echo "${CONTAINER_NETWORK}/16" >> /etc/opendmarc/ignore.hosts
echo "${CONTAINER_NETWORK}/16" >> /etc/opendkim/TrustedHosts
;;
( 'network' )
_log 'trace' "Adding Docker network to Postfix's 'mynetworks'"
postconf -e "$(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
;;
( * )
_log 'warn' "Invalid value for PERMIT_DOCKER: '${PERMIT_DOCKER}'"
_log 'warn' "Clearing Postfix's 'mynetworks'"
postconf -e "mynetworks ="
;;
esac
}
# Requires ENABLE_POSTFIX_VIRTUAL_TRANSPORT=1
function _setup_postfix_virtual_transport
{
_log 'trace' 'Setting up Postfix virtual transport'
if [[ -z ${POSTFIX_DAGENT} ]]
then
dms_panic__no_env 'POSTFIX_DAGENT' 'Postfix Setup [virtual_transport]'
return 1
fi
postconf -e "virtual_transport = ${POSTFIX_DAGENT}"
}
function _setup_postfix_override_configuration
{
_log 'trace' '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
_log 'trace' "Loaded '/tmp/docker-mailserver/postfix-main.cf'"
else
_log 'trace' "No extra Postfix settings loaded because optional '/tmp/docker-mailserver/postfix-main.cf' was 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
_log 'trace' "Loaded '/tmp/docker-mailserver/postfix-master.cf'"
else
_log 'trace' "No extra Postfix settings loaded because optional '/tmp/docker-mailserver/postfix-master.cf' was not provided"
fi
_log 'trace' "Set Postfix's compatibility level to 2"
postconf compatibility_level=2
}
function _setup_postfix_sasl_password
{
_log 'debug' 'Setting up Postfix SASL Password'
# support general SASL password
_sasl_passwd_create
if [[ -f /etc/postfix/sasl_passwd ]]
then
_log 'trace' 'Loaded SASL_PASSWD'
else
_log 'debug' "SASL_PASSWD was not provided - '/etc/postfix/sasl_passwd' not created"
fi
}
function _setup_postfix_relay_hosts
{
_setup_relayhost
}
function _setup_postfix_dhparam
{
_setup_dhparam 'Postfix' '/etc/postfix/dhparams.pem'
}
function _setup_dovecot_dhparam
{
_setup_dhparam 'Dovecot' '/etc/dovecot/dh.pem'
}
function _setup_dhparam
{
local DH_SERVICE=$1
local DH_DEST=$2
local DH_CUSTOM='/tmp/docker-mailserver/dhparams.pem'
_log 'debug' "Setting up ${DH_SERVICE} dhparam"
if [[ -f ${DH_CUSTOM} ]]
then # use custom supplied dh params (assumes they're probably insecure)
_log 'trace' "${DH_SERVICE} will use custom provided DH paramters"
_log 'warn' "Using self-generated dhparams is considered insecure - unless you know what you are doing, please remove '${DH_CUSTOM}'"
cp -f "${DH_CUSTOM}" "${DH_DEST}"
else # use official standardized dh params (provided via Dockerfile)
_log 'trace' "${DH_SERVICE} will use official standardized DH parameters (ffdhe4096)."
fi
}
function _setup_security_stack
{
_log 'debug' '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 [[ ${ENABLE_SPAMASSASSIN} -eq 0 ]]
then
_log 'debug' 'SpamAssassin is disabled'
echo "@bypass_spam_checks_maps = (1);" >>"${DMS_AMAVIS_FILE}"
elif [[ ${ENABLE_SPAMASSASSIN} -eq 1 ]]
then
_log 'debug' 'Enabling and configuring SpamAssassin'
# shellcheck disable=SC2016
sed -i -r 's|^\$sa_tag_level_deflt (.*);|\$sa_tag_level_deflt = '"${SA_TAG}"';|g' /etc/amavis/conf.d/20-debian_defaults
# shellcheck disable=SC2016
sed -i -r 's|^\$sa_tag2_level_deflt (.*);|\$sa_tag2_level_deflt = '"${SA_TAG2}"';|g' /etc/amavis/conf.d/20-debian_defaults
# shellcheck disable=SC2016
sed -i -r 's|^\$sa_kill_level_deflt (.*);|\$sa_kill_level_deflt = '"${SA_KILL}"';|g' /etc/amavis/conf.d/20-debian_defaults
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 [[ ${SPAMASSASSIN_SPAM_TO_INBOX} -eq 1 ]]
then
_log 'trace' 'Configuring Spamassassin/Amavis to send SPAM to inbox'
sed -i "s|\$final_spam_destiny.*=.*$|\$final_spam_destiny = D_PASS;|g" /etc/amavis/conf.d/49-docker-mailserver
sed -i "s|\$final_bad_header_destiny.*=.*$|\$final_bad_header_destiny = D_PASS;|g" /etc/amavis/conf.d/49-docker-mailserver
else
_log 'trace' 'Configuring Spamassassin/Amavis to bounce SPAM'
sed -i "s|\$final_spam_destiny.*=.*$|\$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
fi
if [[ ${ENABLE_SPAMASSASSIN_KAM} -eq 1 ]]
then
_log 'trace' 'Configuring Spamassassin KAM'
local SPAMASSASSIN_KAM_CRON_FILE=/etc/cron.daily/spamassassin_kam
sa-update --import /etc/spamassassin/kam/kam.sa-channels.mcgrail.com.key
cat >"${SPAMASSASSIN_KAM_CRON_FILE}" <<"EOM"
#! /bin/bash
RESULT=$(sa-update --gpgkey 24C063D8 --channel kam.sa-channels.mcgrail.com 2>&1)
EXIT_CODE=${?}
# see https://spamassassin.apache.org/full/3.1.x/doc/sa-update.html#exit_codes
if [[ ${EXIT_CODE} -ge 4 ]]
then
echo -e "Updating SpamAssassin KAM failed:\n${RESULT}\n" >&2
exit 1
fi
exit 0
EOM
chmod +x "${SPAMASSASSIN_KAM_CRON_FILE}"
fi
fi
# ClamAV
if [[ ${ENABLE_CLAMAV} -eq 0 ]]
then
_log 'debug' 'ClamAV is disabled'
echo '@bypass_virus_checks_maps = (1);' >>"${DMS_AMAVIS_FILE}"
elif [[ ${ENABLE_CLAMAV} -eq 1 ]]
then
_log 'debug' 'Enabling ClamAV'
fi
echo '1; # ensure a defined return' >>"${DMS_AMAVIS_FILE}"
chmod 444 "${DMS_AMAVIS_FILE}"
# Fail2ban
if [[ ${ENABLE_FAIL2BAN} -eq 1 ]]
then
_log 'debug' 'Enabling Fail2Ban'
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.d/user-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 \
's|invoke-rc.d spamassassin reload|/etc/init\.d/spamassassin reload|g' \
/etc/cron.daily/spamassassin
# Amavis
if [[ ${ENABLE_AMAVIS} -eq 1 ]]
then
_log 'debug' 'Enabling Amavis'
if [[ -f /tmp/docker-mailserver/amavis.cf ]]
then
cp /tmp/docker-mailserver/amavis.cf /etc/amavis/conf.d/50-user
fi
sed -i -E \
"s|(log_level).*|\1 = ${AMAVIS_LOGLEVEL};|g" \
/etc/amavis/conf.d/49-docker-mailserver
fi
}
function _setup_logrotate
{
_log 'debug' 'Setting up logrotate'
LOGROTATE='/var/log/mail/mail.log\n{\n compress\n copytruncate\n delaycompress\n'
case "${LOGROTATE_INTERVAL}" in
( 'daily' )
_log 'trace' 'Setting postfix logrotate interval to daily'
LOGROTATE="${LOGROTATE} rotate 4\n daily\n"
;;
( 'weekly' )
_log 'trace' 'Setting postfix logrotate interval to weekly'
LOGROTATE="${LOGROTATE} rotate 4\n weekly\n"
;;
( 'monthly' )
_log 'trace' 'Setting postfix logrotate interval to monthly'
LOGROTATE="${LOGROTATE} rotate 4\n monthly\n"
;;
( * )
_log 'warn' 'LOGROTATE_INTERVAL not found in _setup_logrotate'
;;
esac
echo -e "${LOGROTATE}}" >/etc/logrotate.d/maillog
}
function _setup_mail_summary
{
local ENABLED_MESSAGE
ENABLED_MESSAGE="Enabling Postfix log summary reports with recipient '${PFLOGSUMM_RECIPIENT}'"
case "${PFLOGSUMM_TRIGGER}" in
( 'daily_cron' )
_log 'debug' "${ENABLED_MESSAGE}"
_log 'trace' 'Creating daily cron job for pflogsumm report'
cat >/etc/cron.daily/postfix-summary << EOM
#! /bin/bash
/usr/local/bin/report-pflogsumm-yesterday ${HOSTNAME} ${PFLOGSUMM_RECIPIENT} ${PFLOGSUMM_SENDER}
EOM
chmod +x /etc/cron.daily/postfix-summary
;;
( 'logrotate' )
_log 'debug' "${ENABLED_MESSAGE}"
_log 'trace' 'Add postrotate action for pflogsumm report'
sed -i \
"s|}| postrotate\n /usr/local/bin/postfix-summary ${HOSTNAME} ${PFLOGSUMM_RECIPIENT} ${PFLOGSUMM_SENDER}\n endscript\n}\n|" \
/etc/logrotate.d/maillog
;;
( 'none' )
_log 'debug' 'Postfix log summary reports disabled'
;;
( * )
_log 'warn' "Invalid value for PFLOGSUMM_TRIGGER: '${PFLOGSUMM_TRIGGER}'"
;;
esac
}
function _setup_logwatch
{
echo 'LogFile = /var/log/mail/freshclam.log' >>/etc/logwatch/conf/logfiles/clam-update.conf
echo "MailFrom = ${LOGWATCH_SENDER}" >>/etc/logwatch/conf/logwatch.conf
case "${LOGWATCH_INTERVAL}" in
( 'daily' | 'weekly' )
_log 'debug' "Enabling logwatch reports with recipient '${LOGWATCH_RECIPIENT}'"
_log 'trace' "Creating ${LOGWATCH_INTERVAL} cron job for logwatch reports"
local LOGWATCH_FILE INTERVAL
LOGWATCH_FILE="/etc/cron.${LOGWATCH_INTERVAL}/logwatch"
INTERVAL='--range Yesterday'
if [[ ${LOGWATCH_INTERVAL} == 'weekly' ]]
then
INTERVAL="--range 'between -7 days and -1 days'"
fi
cat >"${LOGWATCH_FILE}" << EOM
#! /bin/bash
/usr/sbin/logwatch ${INTERVAL} --hostname ${HOSTNAME} --mailto ${LOGWATCH_RECIPIENT}
EOM
chmod 744 "${LOGWATCH_FILE}"
;;
( 'none' )
_log 'debug' 'Logwatch reports disabled.'
;;
( * )
_log 'warn' "Invalid value for LOGWATCH_INTERVAL: '${LOGWATCH_INTERVAL}'"
;;
esac
}
function _setup_user_patches
{
local USER_PATCHES='/tmp/docker-mailserver/user-patches.sh'
if [[ -f ${USER_PATCHES} ]]
then
_log 'debug' 'Applying user patches'
/bin/bash "${USER_PATCHES}"
else
_log 'trace' "No optional '${USER_PATCHES}' provided"
fi
}
function _setup_fail2ban
{
_log 'debug' 'Setting up Fail2Ban'
if [[ ${FAIL2BAN_BLOCKTYPE} != 'reject' ]]
then
echo -e '[Init]\nblocktype = drop' >/etc/fail2ban/action.d/nftables-common.local
fi
echo '[Definition]' >/etc/fail2ban/filter.d/custom.conf
}
function _setup_dnsbl_disable
{
_log 'debug' 'Disabling postfix DNS block list (zen.spamhaus.org)'
sedfile -i \
'/^smtpd_recipient_restrictions = / s/, reject_rbl_client zen.spamhaus.org//' \
/etc/postfix/main.cf
_log 'debug' 'Disabling postscreen DNS block lists'
postconf -e "postscreen_dnsbl_action = ignore"
postconf -e "postscreen_dnsbl_sites = "
}
function _setup_fetchmail
{
_log 'trace' 'Preparing Fetchmail configuration'
local CONFIGURATION FETCHMAILRC
CONFIGURATION='/tmp/docker-mailserver/fetchmail.cf'
FETCHMAILRC='/etc/fetchmailrc'
if [[ -f ${CONFIGURATION} ]]
then
cat /etc/fetchmailrc_general "${CONFIGURATION}" >"${FETCHMAILRC}"
else
cat /etc/fetchmailrc_general >"${FETCHMAILRC}"
fi
chmod 700 "${FETCHMAILRC}"
chown fetchmail:root "${FETCHMAILRC}"
}
function _setup_fetchmail_parallel
{
_log 'trace' 'Setting up Fetchmail parallel'
mkdir /etc/fetchmailrc.d/
# Split the content of /etc/fetchmailrc into
# smaller fetchmailrc files per server [poll] entries. Each
# separate fetchmailrc file is stored in /etc/fetchmailrc.d
#
# The sole purpose for this is to work around what is known
# as the Fetchmail IMAP idle issue.
function _fetchmailrc_split
{
local FETCHMAILRC='/etc/fetchmailrc'
local FETCHMAILRCD='/etc/fetchmailrc.d'
local DEFAULT_FILE="${FETCHMAILRCD}/defaults"
if [[ ! -r ${FETCHMAILRC} ]]
then
_log 'warn' "File '${FETCHMAILRC}' not found"
return 1
fi
if [[ ! -d ${FETCHMAILRCD} ]]
then
if ! mkdir "${FETCHMAILRCD}"
then
_log 'warn' "Unable to create folder '${FETCHMAILRCD}'"
return 1
fi
fi
local COUNTER=0 SERVER=0
while read -r LINE
do
if [[ ${LINE} =~ poll ]]
then
# If we read "poll" then we reached a new server definition
# We need to create a new file with fetchmail defaults from
# /etc/fetcmailrc
COUNTER=$(( COUNTER + 1 ))
SERVER=1
cat "${DEFAULT_FILE}" >"${FETCHMAILRCD}/fetchmail-${COUNTER}.rc"
echo "${LINE}" >>"${FETCHMAILRCD}/fetchmail-${COUNTER}.rc"
elif [[ ${SERVER} -eq 0 ]]
then
# We have not yet found "poll". Let's assume we are still reading
# the default settings from /etc/fetchmailrc file
echo "${LINE}" >>"${DEFAULT_FILE}"
else
# Just the server settings that need to be added to the specific rc.d file
echo "${LINE}" >>"${FETCHMAILRCD}/fetchmail-${COUNTER}.rc"
fi
# delete commented lines before parsing
done < <(sed '/^[[:space:]]*#/d' "${FETCHMAILRC}")
rm "${DEFAULT_FILE}"
}
_fetchmailrc_split
local COUNTER=0
for RC in /etc/fetchmailrc.d/fetchmail-*.rc
do
COUNTER=$(( COUNTER + 1 ))
cat >"/etc/supervisor/conf.d/fetchmail-${COUNTER}.conf" << EOF
[program:fetchmail-${COUNTER}]
startsecs=0
autostart=false
autorestart=true
stdout_logfile=/var/log/supervisor/%(program_name)s.log
stderr_logfile=/var/log/supervisor/%(program_name)s.log
user=fetchmail
command=/usr/bin/fetchmail -f ${RC} -v --nodetach --daemon %(ENV_FETCHMAIL_POLL)s -i /var/lib/fetchmail/.fetchmail-UIDL-cache --pidfile /var/run/fetchmail/%(program_name)s.pid
EOF
chmod 700 "${RC}"
chown fetchmail:root "${RC}"
done
supervisorctl reread
supervisorctl update
}
function _setup_timezone
{
_log 'debug' "Setting timezone to '${TZ}'"
local ZONEINFO_FILE="/usr/share/zoneinfo/${TZ}"
if [[ ! -e ${ZONEINFO_FILE} ]]
then
_log 'warn' "Cannot find timezone '${TZ}'"
return 1
fi
if ln -fs "${ZONEINFO_FILE}" /etc/localtime \
&& dpkg-reconfigure -f noninteractive tzdata &>/dev/null
then
_log 'trace' "Set time zone to '${TZ}'"
else
_log 'warn' "Setting timezone to '${TZ}' failed"
return 1
fi
}
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