Certificates Requirements
=========================
```
# apt install nginx certbot certbot-nginx
# systemctl enable --now nginx
# certbot certonly --nginx -d mail.a-lec.org
```

Mail Requirements
=================

```
# apt install fail2ban postfix postfix-pcre opendkim spamassassin dovecot-imap dovecot-sieve 
```

Restore config files

```
# systemctl enable --now postfix dovecot
```


Webmail Requirements
====================

Restore nginx configuraiton in /etc/nginx/sites-available and enable with

```
# cd /etc/nginx/sites-enabled
# ln -s ../sites-available/default .
# systemctl reload nginx
```

Download Rouncube from https://github.com/roundcube/roundcubemail

Install in /var/www/html/roundcube

Restore roundcube configuration in /var/www/html/roundcube/config/