When a user tries to change his address book settings in the webpage
under 'Connection Name' or pushes the button 'Test Access', he gets the
error message: 'Groupwise server and/or mailbox not found or inaccessible'.

When I open the admin console on the GMS server (Windows 2003 server)
and use 'Use website as user', I get the same error message on all user

Any ideas?

Thanks, Peter