It looks like you didn't enable LDAP through the Windows ADMIN client for the server you are now trying to set up.
Log into your server, Right click on it and select "System Parameters". Click the Login Information tab and make sure the Enable LDAP box is checked.
You will need to recycle arssockd once this change is made.
Log into your server, Right click on it and select "System Parameters". Click the Login Information tab and make sure the Enable LDAP box is checked.
You will need to recycle arssockd once this change is made.