init

Dockerfile

@@ -0,0 +1,34 @@
+FROM gentoo/portage:latest as portage
+FROM gentoo/stage3:amd64
+
+COPY --from=portage /var/db/repos/gentoo /var/db/repos/gentoo
+
+# courier and pythonfilter install + activate + cleanup
+RUN echo '=mail-filter/courier-pythonfilter-3.0.2-r1' > /etc/portage/package.accept_keywords && \
+	emerge mail-mta/courier mail-filter/courier-pythonfilter dev-python/pyspf dev-python/pydns && \
+	ln -s /usr/bin/pythonfilter /usr/libexec/filters && \
+	filterctl start pythonfilter && \
+	rm -rf /var/db/repos/gentoo
+
+# courier config
+RUN sed -i 's;^TCPDOPTS=.\+$;TCPDOPTS="-stderrlogger=/usr/sbin/courierlogger -nodnslookup -noidentlookup";' /etc/courier/esmtpd && \
+	sed -i 's;^TCPDOPTS=.\+$;TCPDOPTS="-stderrlogger=/usr/sbin/courierlogger -nodnslookup -noidentlookup";' /etc/courier/imapd && \
+	sed -i 's;^DEFAULTDELIVERY=.\+$;DEFAULTDELIVERY="| /usr/bin/maildrop";' /etc/courier/courierd && \
+	sed -i 's;^MAILDROPDEFAULT=.\+$;MAILDROPDEFAULT="./maildir";' /etc/courier/courierd && \
+	sed -i 's;^authmodulelist=.\+$;authmodulelist="authuserdb";' /etc/courier/authlib/authdaemonrc
+#RUN sed -i 's;^DEFAULTDELIVERY=.\+$;DEFAULTDELIVERY="./maildir";' /etc/courier/courierd
+
+# courier runtime
+ADD start.sh /
+RUN chmod +x /start.sh
+
+ADD userdb.example /etc/courier/authlib
+
+EXPOSE 25
+EXPOSE 143
+EXPOSE 993
+
+VOLUME /conf
+VOLUME /mail
+
+CMD /start.sh

README.md

@@ -0,0 +1,15 @@
+# docker-courier
+Docker image providing full [Courier MTA](http://www.courier-mta.org/) suite (not just IMAP)
+
+# Usage
+1. `git clone https://github.com/tuxmainy/docker-courier.git`
+2. `cp env.example .env`
+3. edit .env
+4. make sure volume directories are present
+5. `docker-compose up -d`
+
+# add users
+1. `echo -n 'mypassword' |openssl sha256 -binary |base64`
+2. add new user to userdb:
+
+`user@example.org        systempw={SHA256}<your generated hash goes here>|home=/mail/user|uid=8|gid=12|mail=/mail/user/maildir`

docker-compose.yml

@@ -0,0 +1,32 @@
+version: "3.7"
+
+services:
+        server:
+                build:
+                        context: .
+                network_mode: bridge
+                ports:
+                        - "138.201.55.55:25:25"
+                        - "138.201.55.55:143:143"
+                        - "138.201.55.55:993:993"
+                        - "2a01:4f8:172:101f::2:25:25"
+                        - "2a01:4f8:172:101f::2:143:143"
+                        - "2a01:4f8:172:101f::2:993:993"
+                volumes:
+                        - conf:/etc/courier
+                        - mail:/mail
+                        - /dev/log:/dev/log
+                hostname: devloop.de
+                restart: always
+volumes:
+        conf:
+                driver_opts:
+                        type: "none"
+                        o: "bind"
+                        device: "${DATA_BASE}/conf"
+        mail:
+                driver_opts:
+                        type: "none"
+                        o: "bind"
+                        device: "${DATA_BASE}/mail"
+

env.example

@@ -0,0 +1,2 @@
+COMPOSE_PROJECT_NAME=courier
+DATA_BASE=/path/to/my/basedir/containing/maildirandconf

start.sh

@@ -0,0 +1,68 @@
+#!/bin/bash
+
+#test -e /etc/courier/esmtpd || cp -a /etc/courier.docker/* /etc/courier
+
+OVERRIDE_CONF='/conf'
+CONF='/etc/courier'
+
+for d in `find "${OVERRIDE_CONF}" -mindepth 1 -type d`; do
+	basedir=`echo "${d}" |sed "s;^${OVERRIDE_CONF}/;;"`
+	confdir="${CONF}/${basedir}"
+
+	if [[ ! -e "${confdir}" ]]; then
+		mkdir "${confdir}"
+	elif [[ ! -d "${confdir}" ]]; then
+		echo "${confdir} is not a directory. Thus cannot override with a directory."
+		exit 1
+	fi
+done
+
+for f in `find "${OVERRIDE_CONF}" -mindepth 1 -type f ! -name '*.docker'`; do
+	basefile=`echo "${f}" |sed "s;^${OVERRIDE_CONF}/;;"`
+	conffile="${CONF}/${basefile}"
+
+	if [[ ! -e "${conffile}" ]]; then
+		cp -a "${f}" "${conffile}"
+	elif [[ -f "${conffile}" ]]; then
+		mv "${conffile}" "${f}.docker"
+		cp -a "${f}" "${conffile}"
+	else
+		echo "${conffile} is not a file. Thus cannot override with a file."
+	fi
+done
+
+
+/usr/sbin/makeacceptmailfor
+/usr/sbin/makealiases
+/usr/sbin/makeuserdb
+/usr/sbin/makehosteddomains
+/usr/sbin/makealiases
+/usr/sbin/makesmtpaccess
+
+#/usr/lib/courier/courier-authlib/authdaemond &
+#/usr/sbin/couriertcpd -address=0 -maxprocs=40 -maxperip=20 -nodnslookup -noidentlookup 143 /usr/lib/courier/courier/imaplogin /usr/bin/imapd Maildir
+
+/usr/sbin/authdaemond start
+
+sleep 1
+for home in `/usr/sbin/authenumerate |awk '{print $4}'`; do
+	if [[ ! -e "$home" ]]; then
+		mkdir -p "$home"
+		/usr/bin/maildirmake "$home/maildir"
+	fi
+done
+
+chown -R 8:12 /mail
+chown -R 8:12 /etc/courier
+chmod go-wrx /etc/courier/maildroprc
+
+/usr/sbin/esmtpd start
+/usr/sbin/courier-imapd start
+/usr/sbin/courier-imapd-ssl start
+/usr/sbin/courier start
+
+#umask 0111
+while true; do
+	#nc -lU /dev/log |sed 's/</\n</g' >&2
+	sleep 10
+done

test.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+base=`dirname $0`
+base=`readlink -f "$base"`
+docker run -v "$base/conftest:/conf" --rm -it "$1" "$2"
+

userdb.example

@@ -0,0 +1 @@
+user@example.org	systempw={SHA256}0123456789abcdef=|home=/mail/maildir|uid=8|gid=12