Active directory subtree search

Can anyone please suggest an active directory configuration to allow it to perform a subtree

search and also allow it it use multiple ldap user base dns.

This is what I have at the moment:

ldap.user.basedn=OU=Business Units,DC=test,DC=internal

ldap.user.filter=(&(objectCategory=person)(objectClass=user)%v)

ldap.user.scope=subtree

You really can not have multiple baseDN. You would need to point your baseDN to the top most OU that contains all the accounts you wish to access the chat server. Then you use filters to elininate unwanted accounts.