Domino and Notes using SPX or SPXII still require access to IPX/NCP services for NDS access. When using only NetWare 5.0 servers in your network you need to enable the IPX gateway services so the Domino servers and Notes clients can access the NetWare 5.0 NDS services. As long as there are NetWare 3.xx or IntranetWare 4.xx servers present in the network, Bindery services can be used as well.
Note: The SPX/SPXII protocols are not transportable over Novell's new native IPX over-IP services.