How do I allow users to login to manage their own preferences like password, mail forwarding, white/blacklists, quarantined mails, basic spam policy?

Non of my normal users are able to log into iredadmin interface:
https://my_server.com/iredadmin/

==== Required information ====
- iRedMail version (check /etc/iredmail-release):  0.9.5
- Linux/BSD distribution name and version: CentOS Linux release 7.2.1511 (Core)
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? YES
- Related log if you're reporting an issue:

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