Move Mailboxes The command, zmmboxmove, is run to move user accounts from the mailbox server on the single-sever node to the new mailbox server. You can set global options to exclude items from the mailbox move. See the ZCS Administrator’s Guide, Managing User Accounts chapter for more information about the mailbox move feature. Move the following types of mailboxes User accounts. Admin mailboxes. If you do not move the admin mailbox, you cannot log into the Zimbra Web Client. Spam and ham mailboxes. Note: If you were using Archive and Discovery on the single server mailbox, move the archival mailboxes as well.