==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.2
- Deployed with iRedMail Easy or the downloadable installer? Update from 1.1
- Linux/BSD distribution name and version: FreeBSD 12.1
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

iRedMail (1.[01]) do not install fail2ban by default on FreeBSD.
The documentation on updating from iRedMail 1.1 -> 1.2 suggests a migration of fail2ban from config to database.

I started doing the migration up to the point something at the back of my mind told me that fail2ban was not installed/available.

The suggestion would be to amend the documentation to indicate in which OSes the suggestion is applicable.

Thanks,
PS: I hope I got all the facts correct.