But since there is no edge transport server, you can add the anti-spam functionality (so that it appears in Organization Configuration -> Hub transport and some in Server Configuration -> Hub transport. In each case, there's an anti-spam tab.
To add it, enter these commands:
1. Run the following command from the %system drive%/Program Files\Microsoft\Exchange Server\Scripts folder.
2. After the script has run, restart the Microsoft Exchange Transport service by running the following command.