==== Required information ====
- iRedMail version: 0.8.6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): mysql
- Linux/BSD distribution name and version: centos
- Related log if you're reporting an issue:
====

Hi,
It's rather general question than a problem description.
The easiest way is to describe it by example.
We have two legitimate e-mail accounts with seperate maildirs:
- john@example.com,
- don@example.com.

I'd like a message delivered to John to be replicated to Don's maildir and opposite (message to Don replicated to John's maildir)
I've tried to add aliases:
don@example.com as alias for john,
john@example.com as alias for don,
but it complains about Primary Key in sql structure.

How can I acheive this ?

If I'd use .forward file in both home directories one message would be stored two times.

I've seen in PRO version forward option with copy on local accout. Will it work as I want?