# mailcow-dockerized 🐮 🐋 mailcow dockerized comes with 11 containers linked in a mailcow network: Dovecot, Memcached, Redis, MySQL, PowerDNS Recursor, PHP-FPM, Postfix, Nginx, Rmilter, Rspamd and SOGo. 4 volumes to keep dynamic data. Feel free to use a 3rd-party driver to host your mail directory (vmail) in the cloud or whatever else: vmail-vol-1, dkim-vol-1, redis-vol-1, mysql-vol-1 Important configuration files are mounted into the related containers from the host (`./data/conf`) and can be changed. Services should be restarted after they were changed (docker-compose restart x-mailcow). All configurations were written with security in mind. ### Containers and volumes | Type | Object name | Network names | External binding | Internal binding | Volumes | |-----------|-------------------|------------------------------|----------------------------------------------|----------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | Container | postfix-mailcow | ${MAILCOW_HOSTNAME}, postfix | 25/tcp, 465/tcp, 587/tcp | 588/tcp | ./data/conf/postfix:/opt/postfix/conf, ./data/assets/ssl:/etc/ssl/mail/:ro | | Container | dovecot-mailcow | ${MAILCOW_HOSTNAME}, dovecot | 110/tcp, 143/tcp, 993/tcp, 995/tcp, 4190/tcp | 24/tcp, 10001/tcp | vmail-vol-1:/var/vmail, ./data/conf/dovecot:/etc/dovecot, ./data/assets/ssl:/etc/ssl/mail/:ro | | Container | nginx-mailcow | nginx | 443/tcp | 80/tcp, 8081/tcp | Mounts from sogo-mailcow, ./data/web:/web:ro, ./data/conf/rspamd/dynmaps:/dynmaps:ro, ./data/assets/ssl/:/etc/ssl/mail/:ro, ./data/conf/nginx/:/etc/nginx/conf.d/:ro | | Container | pdns-mailcow | pdns | - | 53/udp | ./data/conf/pdns/:/etc/powerdns/ | | Container | rspamd-mailcow | rspamd | - | 11333/tcp, 11334/tcp | dkim-vol-1:/data/dkim, ./data/conf/rspamd/override.d/:/etc/rspamd/override.d:ro, ./data/conf/rspamd/local.d/:/etc/rspamd/local.d:ro, ./data/conf/rspamd/lua/:/etc/rspamd/lua/:ro | | Container | mysql-mailcow | mysql | - | 3306/tcp | mysql-vol-1:/var/lib/mysql/, ./data/conf/mysql/:/etc/mysql/conf.d/:ro | | Container | rmilter-mailcow | rmilter | - | 9000/tcp | ./data/conf/rmilter/:/etc/rmilter.conf.d/:ro | | Container | phpfpm-mailcow | phpfpm | - | 9000/tcp | dkim-vol-1:/data/dkim, ./data/web:/web:ro, ./data/conf/rspamd/dynmaps:/dynmaps:ro | | Container | sogo-mailcow | sogo | - | 20000/tcp | ./data/conf/sogo/:/etc/sogo/,exposes /usr/lib/GNUstep/SOGo/WebServerResources/ | | Container | redis-mailcow | redis | - | 6379/tcp | redis-vol-1:/data/ | | Container | memcached-mailcow | memcached | - | 11211/tcp | - | | Volume | vmail-vol-1 | - | - | - | Mounts to dovecot | | Volume | dkim-vol-1 | - | - | - | Mounts to rspamd + phpfpm | | Volume | redis-vol-1 | - | - | - | Mounts to redis | | Volume | mysql-vol-1 | - | - | - | Mounts to mysql | All containers share a network "mailcow-network" with the subnet 172.22.1.0/24 - if you want to change it, set it in the composer file. IPs are dynamic except for PowerDNS resolver which has a static ip address 172.22.1.254. ### **FAQ** - rspamd learns mail as spam or ham when you move a message in or out of the junk folder to any mailbox besides trash. - rspamd auto-learns mail when a high or low score is detected (see https://rspamd.com/doc/configuration/statistic.html#autolearning) - You can upgrade containers by running `docker-compose pull && docker-compose up -d`. ## Installation 1. You need Docker and Docker Compose. Most systems can install Docker by running `wget -qO- https://get.docker.com/ | sh` - see [this link](https://docs.docker.com/compose/install/) for installing Docker Compose. 2. Clone this repository and configure `mailcow.conf`, do not use special chars in passwords in this file (will be fixed soon). 3. `docker-compose up -d` - leave the `-d` out for a wall of logs in case of debugging. Done. You can now access https://${MAILCOW_HOSTNAME} with the default credentials `admin` + password `moohoo`. The database will be initialized when you first visit the UI. ## Configuration after installation ### Rspamd UI access If you want to use Rspamds web UI, you need to set a Rspamd controller password: ``` # Generate hash docker-compose exec rspamd-mailcow rspamadm pw ``` Replace given hash in data/conf/rspamd/override.d/worker-controller.inc: ``` enable_password = "myhash"; ``` Restart rspamd: ``` docker-compose restart rspamd-mailcow ``` Open https://${MAILCOW_HOSTNAME}/rspamd in a browser. ### SSL (and: How to use Let's Encrypt) mailcow dockerized comes with a snakeoil CA "mailcow" and a server certificate in `data/assets/ssl`. Please use your own trusted certificates. **Use Let's Encrypt** Get the certbot client: ``` wget https://dl.eff.org/certbot-auto -O /usr/local/sbin/certbot && chmod +x /usr/local/sbin/certbot ``` Please disable applications blocking port 80 and run certbot: ``` certbot-auto certonly \ --standalone \ --standalone-supported-challenges http-01 \ -d ${MAILCOW_HOSTNAME} \ --email you@example.org \ --agree-tos ``` Create hard links to the full path of the new certificates. Assuming you are still in the mailcow root folder: ``` mv data/assets/ssl/cert.{pem,pem.backup} mv data/assets/ssl/key.{pem,pem.backup} ln $(readlink -f /etc/letsencrypt/live/${MAILCOW_HOSTNAME}/fullchain.pem) data/assets/ssl/cert.pem ln $(readlink -f /etc/letsencrypt/live/${MAILCOW_HOSTNAME}/privkey.pem) data/assets/ssl/key.pem ``` Restart containers which use the certificate: ``` docker-compose restart postfix-mailcow docker-compose restart dovecot-mailcow docker-compose restart nginx-mailcow ``` When renewing certificates, run the last two steps (link + restart) as post-hook in certbot. ## More useful commands and examples (todo: move to wiki soon) ### Logs You can use `docker-compose logs $service-name` for almost all containers. Only rmilter does not log to stdout. You can check rspamd logs for rmilter responses. ### MySQL Connect to MySQL database: ``` source mailcow.conf docker-compose exec mysql-mailcow mysql -u${DBUSER} -p${DBPASS} ${DBNAME} ``` Reset mailcow admin to `admin:moohoo`: ``` source mailcow.conf docker-compose exec mysql-mailcow mysql -u${DBUSER} -p${DBPASS} ${DBNAME} -e "DROP TABLE admin; DROP TABLE domain_admins" # Open mailcow UI to auto-init the db ``` Backup database: ``` source mailcow.conf # Create DATE=$(date +"%Y%m%d_%H%M%S") docker-compose exec mysql-mailcow mysqldump --default-character-set=utf8mb4 -u${DBUSER} -p${DBPASS} ${DBNAME} > backup_${DBNAME}_${DATE}.sql ``` ### Backup maildir (simple tar): ``` docker run --rm -it -v $(docker inspect --format '{{ range .Mounts }}{{ if eq .Destination "/var/vmail" }}{{ .Name }}{{ end }}{{ end }}' $(docker-compose ps -q dovecot-mailcow)):/vmail -v ${PWD}:/backup debian:jessie tar cvf /backup/backup_vmail.tar /vmail ``` ### Redis Connect to redis key store: ``` docker-compose exec redis-mailcow redis-cli ``` ### Use rspamadm: ``` docker-compose exec rspamd-mailcow rspamadm --help ``` ### Use rspamc: ``` docker-compose exec rspamd-mailcow rspamc --help ``` ### Use doveadm: ``` docker-compose exec dovecot-mailcow doveadm ``` ### Remove persistent data Remove volume mysql-vol-1 to get rid fo MySQL data. Do the same for volume redis-vol-1 to remove Redis data. ### Scale it You can scale services for mailcow: ``` docker-compose scale rspamd-mailcow=2 docker-compose scale rmilter-mailcow=3 # ... ```