I'm installing LEI 6.5 on the same machine where the Domino 6.5 is running (on Win2003 server).
Although I can ping the server, LEI installer reports:
"Your specified Domino server is not currently available. Please make sure the Domino Server is running or enter a valid server name."
I tried to enter IP address (with port also) instead of server name but that also didn't work.
I found out that dctest.exe is used when installing LEI in order to establish whether a server is available.
This is what dctest reports:
14.07.2009 09:58:07 Directory Assistance failed opening Primary Domino Directory names.nsf, error: This database is currently being used by someone else. In order to share a Notes database, all users must use a Domino Server instead of a File Server.