Sun Java System Messaging Server 6.3 Administration Guide Unknown/invalid Partition

A user can get the message “Unknown/invalid partition” in Messenger Express if their mailbox was moved to a new partition which was just created and Messaging Server was not refreshed or restarted. This problem only occurs on new partitions. If you now add additional user mailboxes to this new partition, you will not have to do a refresh/restart of Messaging Server.