Remove SSMTP and add SMTP relay container example

Dockerfile

@@ -18,12 +18,11 @@ LABEL org.label-schema.build-date=$BUILD_DATE \
 RUN apk --update --no-cache add \
     bash binutils ca-certificates coreutils curl fping git graphviz imagemagick mtr \
     mysql-client net-snmp net-snmp-tools nginx nmap openssl python2 py-mysqldb rrdtool runit \
-    shadow ssmtp supervisor tzdata util-linux whois \
+    shadow supervisor tzdata util-linux whois \
     php7 php7-cli php7-ctype php7-curl php7-fpm php7-gd php7-json php7-mcrypt php7-memcached php7-mbstring php7-mysqli \
     php7-opcache php7-openssl php7-pdo php7-pdo_mysql php7-phar php7-posix php7-session php7-simplexml php7-snmp \
     php7-tokenizer php7-xml php7-zip \
   && sed -i -e "s/;date\.timezone.*/date\.timezone = UTC/" /etc/php7/php.ini \
-  && cp -f /etc/ssmtp/ssmtp.conf /etc/ssmtp/ssmtp.conf.or \
   && rm -rf /var/cache/apk/* /var/www/* /tmp/*
 
 ENV LIBRENMS_VERSION="1.41" \

README.md

@@ -20,7 +20,6 @@ If you are interested, [check out](https://hub.docker.com/r/crazymax/) my other
 
 * Alpine Linux 3.8, Nginx, PHP 7.2
 * Cron tasks as a ["sidecar" container](#cron)
-* [SSMTP](https://linux.die.net/man/8/ssmtp) for SMTP relay to send emails
 * OPCache enabled to store precompiled script bytecode in shared memory
 
 ### From docker-compose
@@ -28,6 +27,7 @@ If you are interested, [check out](https://hub.docker.com/r/crazymax/) my other
 * [Traefik](https://github.com/containous/traefik-library-image) as reverse proxy and creation/renewal of Let's Encrypt certificates
 * [Memcached](https://github.com/docker-library/memcached) image ready to use for better scalability
 * [RRDcached](https://github.com/crazy-max/docker-rrdcached) image ready to use for better scalability
+* [Postfix SMTP relay](https://github.com/juanluisbaptiste/docker-postfix) image to send emails
 * [MariaDB](https://github.com/docker-library/mariadb) image as database instance
 * Cron jobs as a ["sidecar" container](#cron)
 
@@ -50,12 +50,6 @@ If you are interested, [check out](https://hub.docker.com/r/crazymax/) my other
 | `DB_NAME`                   | `librenms`        | MySQL database name
 | `DB_USER`                   | `librenms`        | MySQL user
 | `DB_PASSWORD`               | `librenms`        | MySQL password
-| `SSMTP_HOST`                |                   | SMTP server host
-| `SSMTP_PORT`                | `25`              | SMTP server port
-| `SSMTP_HOSTNAME`            | `$(hostname -f)`  | Full hostname
-| `SSMTP_USER`                |                   | SMTP username
-| `SSMTP_PASSWORD`            |                   | SMTP password
-| `SSMTP_TLS`                 | `NO`              | SSL/TLS
 | `MEMCACHED_HOST`            |                   | Hostname / IP address of a Memcached server
 | `RRDCACHED_HOST`            |                   | Hostname / IP address of a RRDcached server
 

assets/etc/php7/conf.d/sendmail-ssmtp.ini

@@ -1 +0,0 @@
-sendmail_path=/usr/sbin/ssmtp -t

entrypoint.sh

@@ -20,10 +20,6 @@ DB_NAME=${DB_NAME:-"librenms"}
 DB_USER=${DB_USER:-"librenms"}
 DB_PASSWORD=${DB_PASSWORD:-"asupersecretpassword"}
 
-SSMTP_PORT=${SSMTP_PORT:-"25"}
-SSMTP_HOSTNAME=${SSMTP_HOSTNAME:-"$(hostname -f)"}
-SSMTP_TLS=${SSMTP_TLS:-"NO"}
-
 # Timezone
 echo "Setting timezone to ${TZ}..."
 ln -snf /usr/share/zoneinfo/${TZ} /etc/localtime
@@ -55,23 +51,6 @@ echo "Setting Nginx configuration..."
 sed -e "s/@UPLOAD_MAX_SIZE@/$UPLOAD_MAX_SIZE/g" \
   /tpls/etc/nginx/nginx.conf > /etc/nginx/nginx.conf
 
-# SSMTP
-echo "Setting SSMTP configuration..."
-if [ -z "$SSMTP_HOST" ] ; then
-  echo "WARNING: SSMTP_HOST must be defined if you want to send emails"
-  cp -f /etc/ssmtp/ssmtp.conf.or /etc/ssmtp/ssmtp.conf
-else
-  cat > /etc/ssmtp/ssmtp.conf <<EOL
-mailhub=${SSMTP_HOST}:${SSMTP_PORT}
-hostname=${SSMTP_HOSTNAME}
-FromLineOverride=YES
-AuthUser=${SSMTP_USER}
-AuthPass=${SSMTP_PASSWORD}
-UseTLS=${SSMTP_TLS}
-UseSTARTTLS=${SSMTP_TLS}
-EOL
-fi
-
 # SNMP
 echo "Updating SNMP community..."
 sed -i -e "s/RANDOMSTRINGGOESHERE/${LIBRENMS_SNMP_COMMUNITY}/" /etc/snmp/snmpd.conf
@@ -127,14 +106,6 @@ cat > ${LIBRENMS_PATH}/config.d/autoupdate.php <<EOL
 \$config['update'] = 0;
 EOL
 
-# Config : Email
-cat > ${LIBRENMS_PATH}/config.d/email.php <<EOL
-<?php
-\$config['email_backend'] = 'mail';
-\$config['email_from'] = NULL;
-\$config['email_sendmail_path'] = '/usr/sbin/ssmtp -t';
-EOL
-
 # Config : Memcached
 if [ ! -z "${MEMCACHED_HOST}" ]; then
     cat > ${LIBRENMS_PATH}/config.d/memcached.php <<EOL

examples/compose/docker-compose.yml

@@ -43,6 +43,7 @@ services:
     volumes:
       - ./db:/var/lib/mysql
     environment:
+      - TZ=Europe/Paris
       - MYSQL_ALLOW_EMPTY_PASSWORD=yes
       - MYSQL_DATABASE=librenms
       - MYSQL_USER=librenms
@@ -51,6 +52,8 @@ services:
 
   memcached:
     image: memcached:alpine
+    environment:
+      - TZ=Europe/Paris
     restart: always
 
   rrdcached:
@@ -69,12 +72,26 @@ services:
       - FLUSH_DEAD_DATA_INTERVAL=3600
     restart: always
 
+  postfix:
+    image: juanluisbaptiste/postfix
+    volumes:
+      - /etc/localtime:/etc/localtime:ro
+    environment:
+      - SERVER_HOSTNAME=librenms.example.com
+      - SMTP_SERVER=smtp.example.com
+      - SMTP_USERNAME=smtp@example.com
+      - SMTP_PASSWORD=
+    restart: always
+
   app:
     image: crazymax/librenms:latest
+    domainname: example.com
+    hostname: librenms
     depends_on:
       - db
       - memcached
       - rrdcached
+      - smtp
     volumes:
       - ./librenms:/data
     labels:

examples/compose/librenms.env

@@ -12,12 +12,5 @@ DB_NAME=librenms
 DB_USER=librenms
 DB_PASSWORD=asupersecretpassword
 
-SSMTP_HOST=smtp.example.com
-SSMTP_PORT=587
-SSMTP_HOSTNAME=librenms.example.com
-SSMTP_USER=smtp@example.com
-SSMTP_PASSWORD=
-SSMTP_TLS=YES
-
 MEMCACHED_HOST=memcached
 RRDCACHED_HOST=rrdcached