Microsoft Exchange Active Directory Topology service on server localhost can’t be contacted via RPC. Error 0x6D9

I have Exchange installed and the certificate verified.

On a computer in Network I can send out emails but can not receive them.

On a computer outside the network I am not send or receive.

When I attempt to go https://mail.advsystems.com/owa/

I am given the following error.

The Microsoft Exchange Active Directory Topology service on server localhost can’t be contacted via RPC. Error 0x6D9.