[SOLVED] Migration some people from old server

[Minor]

We are going to do migration some people to Zimbra. There are other people on the old e-mail server.
All people of new email server (Zimbra) must send emails to the old email server (Sendmail).
There is Zimbra at the new_server.domain.com and there is Sendmail at the old_server.domain.com.
There are these servers on the domain.com (MX).
Where can we write rules in the Zimbra's configs, so that people of Zimbra can send emails to people of old_server.domain.com?

Exemple:
user1@domain.com -> user1@old_server.domain.com
user2@domain.com -> user2@old_server.domain.com

I know, that postfix have a virtual_alias_maps, but this virtual_alias_maps was used 'virtual_mailbox_domains = proxy:ldap:/opt/zimbra/conf/ldap-vmd.cf'.

[phoenix]

Perhaps a Split Domain would do what you need?

[Minor]

Originally Posted by phoenix

Perhaps a Split Domain would do what you need?

Hello, Bill!

I have gone through this documentation. I think, that this is going to help me. I am going to answer to you tomorrow.

[Minor]

Originally Posted by phoenix

Perhaps a Split Domain would do what you need?

Thank you, Bill!

[phoenix]

You're welcome.