mailcow/docs/first_steps.md

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# Change default language
Change `data/conf/sogo/sogo.conf` and replace English by your language.
Create a file `data/web/inc/vars.local.inc.php` and add "DEFAULT_LANG" with either "en", "pt", "de" or "nl":
```
<?php
$DEFAULT_LANG = "de";
```
# 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*
- autoconfig.*example.org*
## 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. Make sure you set `HTTP_BIND=0.0.0.0` in `mailcow.conf` or setup a reverse proxy to enable connections to port 80. If you changed HTTP_BIND, then restart Nginx: `docker-compose restart nginx-mailcow`.
3. Request the certificate with the webroot method:
```
cd /path/to/git/clone/mailcow-dockerized
source mailcow.conf
certbot certonly \
--webroot \
-w ${PWD}/data/web \
-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 dovecot-mailcow nginx-mailcow
```
When renewing certificates, run the last two steps (link + restart) as post-hook in a script.
# Rspamd UI access
At first you may want to setup Rspamds web interface which provides some useful features and information.
1. Generate a Rspamd controller password 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!