Last week I detected the same problem than the published in this Technote, Domino startup fails with message "Unable to bind to port 2050 on host machine", on a Windows 2003 server on a VMware virtual environtment. My server was Domino 8.5.2 FP1. I was unable to start the Domino server with the -jc switch. The server controller always throwed the error "Unable to bind to port 2050 on host machine 192.168.0.100"
I turned off the firewall, checked that the 2050 port was not being used by any other software, verified the host name in the server document, and tried to find out where 192.168.0.100 IP came from. I was unable. That IP was not assigned to any network card.
Any clue ?