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* [About mailcow: dockerized](#about-mailcow-dockerized)
+ [Container and volume overview](#container-and-volume-overview)
+ [Network](#network)
+ [FAQ](#faq)
* [Installation](#installation)
* [First steps](#first-steps)
+ [Rspamd UI access](#rspamd-ui-access)
+ [SSL (and: How to use Let's Encrypt)](#ssl-and-how-to-use-lets-encrypt)
+ [Adjust service configurations](#adjust-service-configurations)
* [Useful commands and examples](#useful-commands-and-examples)
## About 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
- SOGo
**4** volumes to keep dynamic data - take care of them!
- vmail-vol-1
- dkim-vol-1
- redis-vol-1
- mysql-vol-1
All configurations were written with security in mind.
*[Looking for a farm to host your cow?](https://www.servercow.de)*
### Container and volume overview
| 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 | Mounts from sogo-mailcow, 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/, /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 |
### Network
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.
## First steps
### Rspamd UI access
At first you may want to setup Rspamds web interface which provides some useful features and information.
1. Set a Rspamd controller password:
```
# Generate hash
docker-compose exec rspamd-mailcow rspamadm pw
```
2. Replace the default hash in `data/conf/rspamd/override.d/worker-controller.inc` by your newly generated:
```
enable_password = "myhash";
```
3. Restart rspamd:
```
docker-compose restart rspamd-mailcow
```
Open https://${MAILCOW_HOSTNAME}/rspamd in a browser and login!
### 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.
mailcow uses 3 domain names that should be covered by your new certificate:
- ${MAILCOW_HOSTNAME}
- autodiscover.example.org (used for ActiveSync)
- autoconfig.example.org (used by Thunderbird and derivates)
**Obtain multi-SAN certificate by Let's Encrypt**
This is just an example of how to obtain certificates with certbot. There are several methods!
1. Get the certbot client:
```
wget https://dl.eff.org/certbot-auto -O /usr/local/sbin/certbot && chmod +x /usr/local/sbin/certbot
```
2. Disable applications blocking port 80 and run certbot:
```
cd /path/to/git/clone/mailcow-dockerized
source mailcow.conf
certbot certonly \
--standalone \
--standalone-supported-challenges http-01 \
-d ${MAILCOW_HOSTNAME} \
-d autodiscover.example.org \
-d autoconfig.example.org \
--email you@example.org \
--agree-tos
```
3. 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
```
4. 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 a script.
### Adjust service configurations
The most important configuration files are mounted from the host into the related containers:
```
data/conf/
├── dovecot
│   ├── dovecot.conf
│   ├── sieve_after
│   └── sql
│   ├── dovecot-dict-sql.conf
│   └── dovecot-mysql.conf
├── mysql
│   └── my.cnf
├── nginx
│   ├── dynmaps.conf
│   └── site.conf
├── pdns
│   ├── pdns_custom.lua
│   └── recursor.conf
├── postfix
│   ├── main.cf
│   ├── master.cf
│   ├── postscreen_access.cidr
│   ├── smtp_dsn_filter
│   └── sql
| ...
├── rmilter
│   └── rmilter.conf
├── rspamd
│   ├── dynmaps
│   │   ├── settings.php
│   │   └── vars.inc.php -> ../../../web/inc/vars.inc.php
│   ├── local.d
│   │   ├── dkim.conf
│   │   ├── metrics.conf
│   │   ├── options.inc
│   │   ├── redis.conf
│   │   ├── rspamd.conf.local
│   │   └── statistic.conf
│   ├── lua
│   │   └── rspamd.local.lua
│   └── override.d
│   ├── logging.inc
│   ├── worker-controller.inc
│   └── worker-normal.inc
└── sogo
└── sogo.conf
```
Just change the according configuration file on the host and restart the related service with docker-compose: `docker-compose restart service-mailcow`
## Useful commands and examples
All commands need to be run from within `/path/to/git/clone/mailcow-dockerized`.
### Update images and restart containers
As easy as:
```
docker-compose pull
docker-compose up -d
```
### Override used images with custom Dockerfiles
Make your changes in `data/Dockerfiles/service` and build the image locally:
```
docker build data/Dockerfiles/service -t andryyy/mailcow-dockerized:service
```
Now auto-recreate modified containers:
```
docker-compose up -d
```
### Get bash-completion for docker-compose
For the tab-tab... :-)
```
curl -L https://raw.githubusercontent.com/docker/compose/$(docker-compose version --short)/contrib/completion/bash/docker-compose -o /etc/bash_completion.d/docker-compose
```
### Logs
You can use `docker-compose logs $service-name` for almost all containers. Only rmilter does not log to stdout. You can check rspamd logs for rmilter responses.
Run `docker-compose logs` for all logs at once.
### MySQL
Connect to the MySQL database:
```
source mailcow.conf
docker-compose exec mysql-mailcow mysql -u${DBUSER} -p${DBPASS} ${DBNAME}
```
Reset mailcow admin to `admin:moohoo`:
```
# 1. Drop admin table
source mailcow.conf
docker-compose exec mysql-mailcow mysql -u${DBUSER} -p${DBPASS} ${DBNAME} -e "DROP TABLE admin;"
# 2. Open mailcow UI to auto-init the db
```
Backup the database:
```
source mailcow.conf
DATE=$(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
```
### Redis
Connect to redis key store:
```
docker-compose exec redis-mailcow redis-cli
```
### Rspamd:
Rspamd CLI tools:
```
docker-compose exec rspamd-mailcow rspamc --help
docker-compose exec rspamd-mailcow rspamadm --help
```
### Dovecot:
Run doveadm:
```
docker-compose exec dovecot-mailcow doveadm
```
Backup maildir (simple tar file):
```
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 cvfz /backup/backup_vmail.tar.gz /vmail
```
### Remove persistent data
Remove volume `mysql-vol-1` to remove all MySQL data.
Remove volume `redis-vol-1` to remove all Redis data.
Remove volume `vmail-vol-1` to remove all contents of `/var/vmail` mounted to `dovecot-mailcow`.
Remove volume `dkim-vol-1` to remove all DKIM keys.
### Scale it
You can scale some services for mailcow, which is much more useful on a multi-host system. Please do not scale MySQL or Redis containers.
This is insufficiently tested!
```
docker-compose scale rspamd-mailcow=2
docker-compose scale rmilter-mailcow=3
# ...
```
Please see the official documentation for instructions => [mailcow.email/dockerized}(https://mailcow.email/dockerized)