The error below is reported when I run AD connector Services - ADC Tools -
Step 3 (resource mailbox wizard) : There are no Resource Mailboxes to configure.
Step 4 (connection agreement wizard) : Error: The organization o=First Organization is already installed into this forest but the configured 5.5 server is a member of organization o=hd. Please choose a 5.5 server in the correct Org.
Both Servers are backup domain controllers, the 5.5 machine is running NT4, both Servers are listed in the AD DC section of AD users and computers.