I am not sure how to handle this.
I am migrating emails from an old server to my iredmail server.

The email accounts are very old

some email accounts are across several  domains with aiases

trying to figure out:
primary email  jane@xyz.com
alias   jane@abc.com

receive email as jane@xyz.com - OK
email for jane@abc.com is delivered by default
send as jane@xyz.com OK
send as jane@abc.com  FAILS 

Is there any way of allowing the above to not fail ?

===== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.6 MYSQL edition.
- Linux/BSD distribution name and version: Ubuntu 16.04 LTS
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):MYSQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? YES
- Related log if you're reporting an issue:  unknown
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