I’m trying to get Web SSO working on a Domino 8.5.2. server, running on an iSeries. I have found this description, http://www-10.lotus.com/ldd/dominowiki.nsf/dx/Deploying_SPNEGO, and a sample for Windows, OpenNTF.org - The Open Source Community for Collaboration Solutions.
I have not been able to compile the source code for the DSAPI filter on the iSeries.
Do you have the source code for the iSeries?