I have 4 netware 6.5 SP5 servers on my network, all with AFPTCP loaded. Users can login to 2 of the servers, but the other 2 just return an Incorrect Username or Password error.

I've done an NMAS DSTRACE on the servers and can see the authentication process on the once that work, but the ones that don't work show no NMAS activity at all in the trace.

I've checked that Macintosh Native File Access is enabled in iManager on the servers.

Any idea why this might happen? Is there anything I need to configure other than loading AFPTCP.NLM on the server & set the Simple Password?