How to block LDAP users without /home directory

On Redhat 7.3, I have setup LDAP Authentication for users within our company's AD Domain. For a small list of pre-selected Domain users of the system, I have manually created their home directory in /home. They are able to login and be in their home directory (not auto mounted).

However, I would like to NOT allow access to other Domain users that DO NOT already have a home directory. Currently, other users in the Domain can login, but they are put in /, and I don't want this. Any Help?

Thanks,
John