==== Required information ====
- iRedMail version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Linux/BSD distribution name and version:
- Related log if you're reporting an issue:
======== Required information ====
- iRedMail version:  v2.1.2 (LDAP)
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):  LDAP 27
- Linux/BSD distribution name and version:   CentOS release 6.5 (Final)
- Related log if you're reporting an issue:

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At My iRedMail
1. Primary domain is real domain and still working at another server at ISP
2. Second domain use At My iRedMail

and Second domain send email to Primary domain error Unknow user (becausd of Primary working at other Server)

how to fix pleasessssss