Please enter a valid server name

I’m following Brownies Blog to make a Lotus Learning Environment.

http://www.browniesblog.com/A55CBC/blog.nsf/dx/19042009112130AMMBR3M2.htm

When I get to the part about “How do you want to connect to the domino server?” I select “Setup connection with LAN” and next. It then replies:

“Please enter a valid server name.”

What is a valid server name?

I connect ok to the machine with webmin.nsf which tells me the server name is:

http://192.168.56.101/webadmin.nsf

You (notes/Felix Dzerzhinsky Workers Defence Collective/KH) are connected to:

Server name: ubuntu/Security Mercenary/Felix Dzerzhinsky Workers Defence Collective/KH - FDWDC Server 1

Host name: 192.168.56.101:80

Version and build: Release 8.5 (359)

Operating system: DISTRIB_ID=Ubuntu (UNIX)

Directory & partition: /local/notesdata (.local.notesdata)

Server date & time: 09/22/2009 05:58:45 PM

Elapsed up-time: 01:11:35

Transactions/minute: Last minute: 0; Last hour: 0; Peak: 0

Peak # of sessions: 0 at 11/30/1999 12:00:00 AM

Transactions: 0, Max. concurrent: 20

Waiting tasks: 0

Availability Index: 100 (state: AVAILABLE)

Mail domain: FDWDC

Mail tracking: Not Enabled

Mail journalling: Not Enabled

Shared mail: Not available

Mailboxes: 1

Pending mail: 0, Dead mail: 0

DAOS: Not enabled

Transactional logging: Not enabled

Activity logging: Not Enabled

Fault recovery: Not Enabled

Server controller: Not Enabled

DB2 enabled: Not Enabled

Lotus Domino Web Administrator 8.5 (09/12/2008)

What to do? I am still very new to notes/domino