Mailing lists

==== Required information ====
- iRedMail version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: Redhat 6.5
- Related log if you're reporting an issue:
====
I am wonder why mailing lists are only available with the LDAP backend.  Doesn't postfix/dovecot support mailing lists in MySQL? or even text files?  From what I read it seems they do.

Regards

John