Thanks for your reply.
At present, only xyz domain contains mail users and the users is using to send/receive mail normally. abc domain only contains the system accounts such as:
admin@abc.com,wiki@abc.com,spam@abc.com.
At first, my boss have plan to move abc domain (hosting on the other system) to our private system. So, I has decided to build Zimbra mail system which used for 2 domain: abc.com and xyz.com (abc.com as main domain). Now, my boss give up this plan and i have the problem with sending/receiving between this two domain. When i send mail from xyz dmain to abc domain, zimbra will send to my abc domain (on zimbra) which not have accounts. My task is delete abc domain from my Zimbra system to send mail from xyz domain to abc domain (is being hosting on the other system).
Do you have any ways to help me?
Can i delete abc domain from zimbra and xyz domain will operate as main domain?
Thanks,