In the old bindery days of NetWare 2.x/3.x, upgrading or replacing a NetWare server with another bindery-based server was an easy process. However, when upgrading to a NetWare 4.x or 5.x server, this is no longer the case since they use an NDS database and only emulate a bindery database. Thus, the bindery-based UserIDs can get out of sync with the sys:mail\userid mailboxes and will need to be manually resync'd.

When creating a new user on your NetWare v4.x or newer network, NetWare doesn't create the bindery-based SYS:MAIL\userid mailbox directories like NetWare 3.x did. The free NLM utility mentioned here can auto-create these mailbox directories for new users.