Zimbra Collaboration Suite 7.0
Zimbra Collaboration Suite 7.0
Administrator's Guide
Open Source Edition

Managing User Accounts > Distributing Accounts Across Servers

Distributing Accounts Across Servers
In an environment with multiple mailbox servers, the class of service is used to assign a new account to a mailbox server. The COS Server Pool tab lists the mailbox servers in your Zimbra environment. When you configure the COS, you select which servers to add to the server pool. Within each pool of servers, a random algorithm assigns new mailboxes to any available server.
You can assign an account to a particular mailbox server when you create an account in the New Account Wizard, Mail Server field. Uncheck auto and enter the mailbox server in the Mail Server field.