Integration with Multi-forest AD setup

Hi

We have 3 AD forests. All have two way trust. SEP server is joined to one of the forest. We want to integrate our SEP server with all three Forest. Is it possible as I see an option to put LDAP Server IP. But can I put LDAP IPs of each forest and sync specific OUs from each forest? Will appreciate the suggestions with links to achieve this task if possible.

Thanks
Rafay