mirror of
https://github.com/docker-mailserver/docker-mailserver.git
synced 2025-08-29 14:28:55 +02:00
scripts: housekeeping & cleanup setup (1/2) (#3121)
This commit is contained in:
Georg Lauterbach
GitHub
parent
f35b60042f
commit
4b04c3e31c
11 changed files with 233 additions and 262 deletions
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@ -1,17 +1,16 @@
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#!/bin/bash
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# Set up OpenDKIM & OpenDMARC.
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# Set up OpenDKIM
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#
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# ## Attention
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#
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# The OpenDKIM milter must come before the OpenDMARC milter in Postfix's#
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# The OpenDKIM milter must come before the OpenDMARC milter in Postfix's
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# `smtpd_milters` milters options.
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function _setup_dkim_dmarc
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function _setup_opendkim
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{
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if [[ ${ENABLE_OPENDKIM} -eq 1 ]]
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then
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_log 'debug' 'Setting up DKIM'
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_log 'debug' 'Configuring DKIM'
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mkdir -p /etc/opendkim/keys/
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touch /etc/opendkim/{SigningTable,TrustedHosts,KeyTable}
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@ -43,26 +42,45 @@ function _setup_dkim_dmarc
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echo "Nameservers ${NAMESERVER_IPS}" >>/etc/opendkim.conf
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_log 'trace' "Nameservers added to '/etc/opendkim.conf'"
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fi
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else
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# Even though we do nothing here and the message suggests we perform some action, the
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# message is due to the default value being `1`, i.e. enabled. If the default were `0`,
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# we could have said `OpenDKIM is disabled`, but we need to make it uniform with all
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# other functions.
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_log 'debug' 'Disabling OpenDKIM'
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fi
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}
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# Set up OpenDKIM
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#
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# ## Attention
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#
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# The OpenDMARC milter must come after the OpenDKIM milter in Postfix's
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# `smtpd_milters` milters options.
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function _setup_opendmarc
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{
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if [[ ${ENABLE_OPENDMARC} -eq 1 ]]
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then
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# TODO when disabling SPF is possible, add a check whether DKIM and SPF is disabled
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# TODO When disabling SPF is possible, add a check whether DKIM and SPF is disabled
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# for DMARC to work, you should have at least one enabled
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# (see RFC 7489 https://www.rfc-editor.org/rfc/rfc7489#page-24)
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_log 'debug' 'Configuring OpenDMARC'
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_log 'trace' "Adding OpenDMARC to Postfix's milters"
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postconf 'dmarc_milter = inet:localhost:8893'
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# Make sure to append the OpenDMARC milter _after_ the OpenDKIM milter!
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# shellcheck disable=SC2016
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sed -i -E 's|^(smtpd_milters =.*)|\1 \$dmarc_milter|g' /etc/postfix/main.cf
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sed -i \
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-e "s|^AuthservID.*$|AuthservID ${HOSTNAME}|g" \
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-e "s|^TrustedAuthservIDs.*$|TrustedAuthservIDs ${HOSTNAME}|g" \
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/etc/opendmarc.conf
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else
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# Even though we do nothing here and the message suggests we perform some action, the
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# message is due to the default value being `1`, i.e. enabled. If the default were `0`,
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# we could have said `OpenDKIM is disabled`, but we need to make it uniform with all
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# other functions.
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_log 'debug' 'Disabling OpenDMARC'
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fi
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}
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function _setup_dmarc_hostname
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{
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_log 'debug' 'Setting up DMARC'
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sed -i -e \
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"s|^AuthservID.*$|AuthservID ${HOSTNAME}|g" \
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-e "s|^TrustedAuthservIDs.*$|TrustedAuthservIDs ${HOSTNAME}|g" \
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/etc/opendmarc.conf
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}
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92
target/scripts/startup/setup.d/mail_state.sh
Normal file
92
target/scripts/startup/setup.d/mail_state.sh
Normal file
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@ -0,0 +1,92 @@
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#!/bin/bash
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# Consolidate all states into a single directory
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# (/var/mail-state) to allow persistence using docker volumes
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function _setup_save_states
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{
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local STATEDIR FILE FILES
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STATEDIR='/var/mail-state'
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if [[ ${ONE_DIR} -eq 1 ]] && [[ -d ${STATEDIR} ]]
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then
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_log 'debug' "Consolidating all state onto ${STATEDIR}"
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# Always enabled features:
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FILES=(
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lib/logrotate
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lib/postfix
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spool/postfix
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)
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# Only consolidate state for services that are enabled
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# Notably avoids copying over 200MB for the ClamAV database
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[[ ${ENABLE_AMAVIS} -eq 1 ]] && FILES+=('lib/amavis')
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[[ ${ENABLE_CLAMAV} -eq 1 ]] && FILES+=('lib/clamav')
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[[ ${ENABLE_FAIL2BAN} -eq 1 ]] && FILES+=('lib/fail2ban')
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[[ ${ENABLE_FETCHMAIL} -eq 1 ]] && FILES+=('lib/fetchmail')
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[[ ${ENABLE_POSTGREY} -eq 1 ]] && FILES+=('lib/postgrey')
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[[ ${ENABLE_RSPAMD} -eq 1 ]] && FILES+=('lib/rspamd')
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[[ ${ENABLE_SPAMASSASSIN} -eq 1 ]] && FILES+=('lib/spamassassin')
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[[ ${SMTP_ONLY} -ne 1 ]] && FILES+=('lib/dovecot')
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for FILE in "${FILES[@]}"
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do
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DEST="${STATEDIR}/${FILE//\//-}"
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FILE="/var/${FILE}"
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# If relevant content is found in /var/mail-state (presumably a volume mount),
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# use it instead. Otherwise copy over any missing directories checked.
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if [[ -d ${DEST} ]]
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then
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_log 'trace' "Destination ${DEST} exists, linking ${FILE} to it"
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# Original content from image no longer relevant, remove it:
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rm -rf "${FILE}"
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elif [[ -d ${FILE} ]]
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then
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_log 'trace' "Moving contents of ${FILE} to ${DEST}"
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# Empty volume was mounted, or new content from enabling a feature ENV:
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mv "${FILE}" "${DEST}"
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fi
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# Symlink the original path in the container ($FILE) to be
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# sourced from assocaiated path in /var/mail-state/ ($DEST):
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ln -s "${DEST}" "${FILE}"
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done
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# This ensures the user and group of the files from the external mount have their
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# numeric ID values in sync. New releases where the installed packages order changes
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# can change the values in the Docker image, causing an ownership mismatch.
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# NOTE: More details about users and groups added during image builds are documented here:
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# https://github.com/docker-mailserver/docker-mailserver/pull/3011#issuecomment-1399120252
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_log 'trace' 'Fixing /var/mail-state/* permissions'
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[[ ${ENABLE_AMAVIS} -eq 1 ]] && chown -R amavis:amavis /var/mail-state/lib-amavis
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[[ ${ENABLE_CLAMAV} -eq 1 ]] && chown -R clamav:clamav /var/mail-state/lib-clamav
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[[ ${ENABLE_FETCHMAIL} -eq 1 ]] && chown -R fetchmail:nogroup /var/mail-state/lib-fetchmail
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[[ ${ENABLE_POSTGREY} -eq 1 ]] && chown -R postgrey:postgrey /var/mail-state/lib-postgrey
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[[ ${ENABLE_RSPAMD} -eq 1 ]] && chown -R _rspamd:_rspamd /var/mail-state/lib-rspamd
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[[ ${ENABLE_SPAMASSASSIN} -eq 1 ]] && chown -R debian-spamd:debian-spamd /var/mail-state/lib-spamassassin
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chown -R root:root /var/mail-state/lib-logrotate
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chown -R postfix:postfix /var/mail-state/lib-postfix
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# NOTE: The Postfix spool location has mixed owner/groups to take into account:
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# UID = postfix(101): active, bounce, corrupt, defer, deferred, flush, hold, incoming, maildrop, private, public, saved, trace
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# UID = root(0): dev, etc, lib, pid, usr
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# GID = postdrop(103): maildrop, public
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# GID for all other directories is root(0)
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# NOTE: `spool-postfix/private/` will be set to `postfix:postfix` when Postfix starts / restarts
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# Set most common ownership:
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chown -R postfix:root /var/mail-state/spool-postfix
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chown root:root /var/mail-state/spool-postfix
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# These two require the postdrop(103) group:
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chgrp -R postdrop /var/mail-state/spool-postfix/maildrop
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chgrp -R postdrop /var/mail-state/spool-postfix/public
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# These all have root ownership at the src location:
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chown -R root /var/mail-state/spool-postfix/dev
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chown -R root /var/mail-state/spool-postfix/etc
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chown -R root /var/mail-state/spool-postfix/lib
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chown -R root /var/mail-state/spool-postfix/pid
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chown -R root /var/mail-state/spool-postfix/usr
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fi
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}
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@ -4,18 +4,79 @@ function _setup_security_stack
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{
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_log 'debug' 'Setting up Security Stack'
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__setup__security__postgrey
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__setup__security__postscreen
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# recreate auto-generated file
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local DMS_AMAVIS_FILE=/etc/amavis/conf.d/61-dms_auto_generated
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echo "# WARNING: this file is auto-generated." >"${DMS_AMAVIS_FILE}"
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echo "use strict;" >>"${DMS_AMAVIS_FILE}"
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# SpamAssassin
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if [[ ${ENABLE_SPAMASSASSIN} -eq 0 ]]
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__setup__security__spamassassin
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__setup__security__clamav
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echo '1; # ensure a defined return' >>"${DMS_AMAVIS_FILE}"
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chmod 444 "${DMS_AMAVIS_FILE}"
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__setup__security__fail2ban
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__setup__security__amavis
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}
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function __setup__security__postgrey
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{
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if [[ ${ENABLE_POSTGREY} -eq 1 ]]
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then
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_log 'debug' 'SpamAssassin is disabled'
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echo "@bypass_spam_checks_maps = (1);" >>"${DMS_AMAVIS_FILE}"
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elif [[ ${ENABLE_SPAMASSASSIN} -eq 1 ]]
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_log 'debug' 'Enabling and configuring Postgrey'
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sedfile -i -E \
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's|(^smtpd_recipient_restrictions =.*)|\1, check_policy_service inet:127.0.0.1:10023|' \
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/etc/postfix/main.cf
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sed -i -e \
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"s|\"--inet=127.0.0.1:10023\"|\"--inet=127.0.0.1:10023 --delay=${POSTGREY_DELAY} --max-age=${POSTGREY_MAX_AGE} --auto-whitelist-clients=${POSTGREY_AUTO_WHITELIST_CLIENTS}\"|" \
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/etc/default/postgrey
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if ! grep -i 'POSTGREY_TEXT' /etc/default/postgrey
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then
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printf 'POSTGREY_TEXT=\"%s\"\n\n' "${POSTGREY_TEXT}" >>/etc/default/postgrey
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fi
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if [[ -f /tmp/docker-mailserver/whitelist_clients.local ]]
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then
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cp -f /tmp/docker-mailserver/whitelist_clients.local /etc/postgrey/whitelist_clients.local
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fi
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if [[ -f /tmp/docker-mailserver/whitelist_recipients ]]
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then
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cp -f /tmp/docker-mailserver/whitelist_recipients /etc/postgrey/whitelist_recipients
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fi
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else
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_log 'debug' 'Postscreen is disabled'
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fi
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}
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function __setup__security__postscreen
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{
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_log 'debug' 'Configuring Postscreen'
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sed -i \
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-e "s|postscreen_dnsbl_action = enforce|postscreen_dnsbl_action = ${POSTSCREEN_ACTION}|" \
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-e "s|postscreen_greet_action = enforce|postscreen_greet_action = ${POSTSCREEN_ACTION}|" \
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-e "s|postscreen_bare_newline_action = enforce|postscreen_bare_newline_action = ${POSTSCREEN_ACTION}|" /etc/postfix/main.cf
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if [[ ${ENABLE_DNSBL} -eq 0 ]]
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then
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_log 'debug' 'Disabling Postscreen DNSBLs'
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postconf 'postscreen_dnsbl_action = ignore'
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postconf 'postscreen_dnsbl_sites = '
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else
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_log 'debug' 'Postscreen DNSBLs are enabled'
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fi
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}
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function __setup__security__spamassassin
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{
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if [[ ${ENABLE_SPAMASSASSIN} -eq 1 ]]
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then
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_log 'debug' 'Enabling and configuring SpamAssassin'
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@ -28,6 +89,11 @@ function _setup_security_stack
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# shellcheck disable=SC2016
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sed -i -r 's|^\$sa_kill_level_deflt (.*);|\$sa_kill_level_deflt = '"${SA_KILL}"';|g' /etc/amavis/conf.d/20-debian_defaults
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# fix cron.daily for spamassassin
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sed -i \
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's|invoke-rc.d spamassassin reload|/etc/init\.d/spamassassin reload|g' \
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/etc/cron.daily/spamassassin
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if [[ ${SA_SPAM_SUBJECT} == 'undef' ]]
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then
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# shellcheck disable=SC2016
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@ -96,25 +162,37 @@ EOF
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chmod +x "${SPAMASSASSIN_KAM_CRON_FILE}"
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fi
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else
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_log 'debug' 'SpamAssassin is disabled'
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echo "@bypass_spam_checks_maps = (1);" >>"${DMS_AMAVIS_FILE}"
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rm -f /etc/cron.daily/spamassassin
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fi
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}
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# ClamAV
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if [[ ${ENABLE_CLAMAV} -eq 0 ]]
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function __setup__security__clamav
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{
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if [[ ${ENABLE_CLAMAV} -eq 1 ]]
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then
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_log 'debug' 'ClamAV is disabled'
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_log 'debug' 'Enabling and configuring ClamAV'
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if [[ ${CLAMAV_MESSAGE_SIZE_LIMIT} != '25M' ]]
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then
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_log 'trace' "Setting ClamAV message scan size limit to '${CLAMAV_MESSAGE_SIZE_LIMIT}'"
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sedfile -i \
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"s/^MaxFileSize.*/MaxFileSize ${CLAMAV_MESSAGE_SIZE_LIMIT}/" \
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/etc/clamav/clamd.conf
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fi
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else
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_log 'debug' 'Disabling ClamAV'
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echo '@bypass_virus_checks_maps = (1);' >>"${DMS_AMAVIS_FILE}"
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elif [[ ${ENABLE_CLAMAV} -eq 1 ]]
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then
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_log 'debug' 'Enabling ClamAV'
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rm -f /etc/logrotate.d/clamav-* /etc/cron.d/clamav-freshclam
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fi
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}
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echo '1; # ensure a defined return' >>"${DMS_AMAVIS_FILE}"
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chmod 444 "${DMS_AMAVIS_FILE}"
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# Fail2ban
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function __setup__security__fail2ban
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{
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if [[ ${ENABLE_FAIL2BAN} -eq 1 ]]
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then
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_log 'debug' 'Enabling Fail2Ban'
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_log 'debug' 'Enabling and configuring Fail2Ban'
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if [[ -e /tmp/docker-mailserver/fail2ban-fail2ban.cf ]]
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then
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@ -125,20 +203,24 @@ EOF
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then
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cp /tmp/docker-mailserver/fail2ban-jail.cf /etc/fail2ban/jail.d/user-jail.local
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fi
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if [[ ${FAIL2BAN_BLOCKTYPE} != 'reject' ]]
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then
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echo -e '[Init]\nblocktype = drop' >/etc/fail2ban/action.d/nftables-common.local
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fi
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echo '[Definition]' >/etc/fail2ban/filter.d/custom.conf
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else
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# disable logrotate config for fail2ban if not enabled
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_log 'debug' 'Fail2Ban is disabled'
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rm -f /etc/logrotate.d/fail2ban
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fi
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}
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# fix cron.daily for spamassassin
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sed -i \
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's|invoke-rc.d spamassassin reload|/etc/init\.d/spamassassin reload|g' \
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/etc/cron.daily/spamassassin
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# Amavis
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function __setup__security__amavis
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{
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if [[ ${ENABLE_AMAVIS} -eq 1 ]]
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then
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_log 'debug' 'Enabling Amavis'
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_log 'debug' 'Configuring Amavis'
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if [[ -f /tmp/docker-mailserver/amavis.cf ]]
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then
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cp /tmp/docker-mailserver/amavis.cf /etc/amavis/conf.d/50-user
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@ -147,14 +229,6 @@ EOF
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sed -i -E \
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"s|(log_level).*|\1 = ${AMAVIS_LOGLEVEL};|g" \
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/etc/amavis/conf.d/49-docker-mailserver
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fi
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}
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function _setup_amavis
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{
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if [[ ${ENABLE_AMAVIS} -eq 1 ]]
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then
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_log 'debug' 'Setting up Amavis'
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cat /etc/dms/postfix/master.d/postfix-amavis.cf >>/etc/postfix/master.cf
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postconf 'content_filter = smtp-amavis:[127.0.0.1]:10024'
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@ -163,7 +237,9 @@ function _setup_amavis
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"s|^#\$myhostname = \"mail.example.com\";|\$myhostname = \"${HOSTNAME}\";|" \
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/etc/amavis/conf.d/05-node_id
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else
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_log 'debug' 'Disabling Amavis cron job'
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_log 'debug' 'Disabling Amavis'
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_log 'trace' 'Disabling Amavis cron job'
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mv /etc/cron.d/amavisd-new /etc/cron.d/amavisd-new.disabled
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chmod 0 /etc/cron.d/amavisd-new.disabled
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@ -178,88 +254,3 @@ function _setup_amavis
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fi
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fi
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}
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function _setup_fail2ban
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{
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_log 'debug' 'Setting up Fail2Ban'
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if [[ ${FAIL2BAN_BLOCKTYPE} != 'reject' ]]
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then
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echo -e '[Init]\nblocktype = drop' >/etc/fail2ban/action.d/nftables-common.local
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fi
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echo '[Definition]' >/etc/fail2ban/filter.d/custom.conf
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}
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function _setup_postgrey
|
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{
|
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_log 'debug' 'Configuring Postgrey'
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|
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sedfile -i -E \
|
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's|(^smtpd_recipient_restrictions =.*)|\1, check_policy_service inet:127.0.0.1:10023|' \
|
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/etc/postfix/main.cf
|
||||
|
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sed -i -e \
|
||||
"s|\"--inet=127.0.0.1:10023\"|\"--inet=127.0.0.1:10023 --delay=${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 = ${POSTSCREEN_ACTION}|" /etc/postfix/main.cf
|
||||
}
|
||||
|
||||
|
||||
function _setup_clamav_sizelimit
|
||||
{
|
||||
_log 'trace' "Setting ClamAV message scan size limit to '${CLAMAV_MESSAGE_SIZE_LIMIT}'"
|
||||
sedfile -i "s/^MaxFileSize.*/MaxFileSize ${CLAMAV_MESSAGE_SIZE_LIMIT}/" /etc/clamav/clamd.conf
|
||||
}
|
||||
|
||||
|
||||
function _setup_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 [[ ${ACCOUNT_PROVISIONER} == 'LDAP' ]]
|
||||
then
|
||||
if [[ -z ${LDAP_QUERY_FILTER_SENDERS} ]]
|
||||
then
|
||||
postconf 'smtpd_sender_login_maps = ldap:/etc/postfix/ldap-users.cf ldap:/etc/postfix/ldap-aliases.cf ldap:/etc/postfix/ldap-groups.cf'
|
||||
else
|
||||
postconf 'smtpd_sender_login_maps = ldap:/etc/postfix/ldap-senders.cf'
|
||||
fi
|
||||
else
|
||||
if [[ -f /etc/postfix/regexp ]]
|
||||
then
|
||||
postconf '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 'smtpd_sender_login_maps = texthash:/etc/postfix/virtual, hash:/etc/aliases, pcre:/etc/postfix/maps/sender_login_maps.pcre'
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -2,13 +2,18 @@
|
|||
|
||||
function _setup_rspamd
|
||||
{
|
||||
_log 'warn' 'Rspamd integration is work in progress - expect (breaking) changes at any time'
|
||||
_log 'debug' 'Enabling Rspamd'
|
||||
if [[ ${ENABLE_RSPAMD} -eq 1 ]]
|
||||
then
|
||||
_log 'warn' 'Rspamd integration is work in progress - expect (breaking) changes at any time'
|
||||
_log 'debug' 'Enabling and configuring Rspamd'
|
||||
|
||||
__rspamd__preflight_checks
|
||||
__rspamd__adjust_postfix_configuration
|
||||
__rspamd__disable_default_modules
|
||||
__rspamd__handle_modules_configuration
|
||||
__rspamd__preflight_checks
|
||||
__rspamd__adjust_postfix_configuration
|
||||
__rspamd__disable_default_modules
|
||||
__rspamd__handle_modules_configuration
|
||||
else
|
||||
_log 'debug' 'Rspamd is disabled'
|
||||
fi
|
||||
}
|
||||
|
||||
# Just a helper to prepend the log messages with `(Rspamd setup)` so
|
||||
|
|
|
|||
32
target/scripts/startup/setup.d/security/spoofing.sh
Normal file
32
target/scripts/startup/setup.d/security/spoofing.sh
Normal file
|
|
@ -0,0 +1,32 @@
|
|||
#!/bin/bash
|
||||
|
||||
function _setup_spoof_protection
|
||||
{
|
||||
if [[ ${SPOOF_PROTECTION} -eq 1 ]]
|
||||
then
|
||||
_log 'trace' 'Enabling and configuring spoof protection'
|
||||
|
||||
sed -i \
|
||||
's|smtpd_sender_restrictions =|smtpd_sender_restrictions = reject_authenticated_sender_login_mismatch,|' \
|
||||
/etc/postfix/main.cf
|
||||
|
||||
if [[ ${ACCOUNT_PROVISIONER} == 'LDAP' ]]
|
||||
then
|
||||
if [[ -z ${LDAP_QUERY_FILTER_SENDERS} ]]
|
||||
then
|
||||
postconf 'smtpd_sender_login_maps = ldap:/etc/postfix/ldap-users.cf ldap:/etc/postfix/ldap-aliases.cf ldap:/etc/postfix/ldap-groups.cf'
|
||||
else
|
||||
postconf 'smtpd_sender_login_maps = ldap:/etc/postfix/ldap-senders.cf'
|
||||
fi
|
||||
else
|
||||
if [[ -f /etc/postfix/regexp ]]
|
||||
then
|
||||
postconf '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 'smtpd_sender_login_maps = texthash:/etc/postfix/virtual, hash:/etc/aliases, pcre:/etc/postfix/maps/sender_login_maps.pcre'
|
||||
fi
|
||||
fi
|
||||
else
|
||||
_log 'debug' 'Spoof protection is disabled'
|
||||
fi
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue