You are in the correct forum.
From your brief description it sounds like you are getting errors in the Outbound Enabler when trying to connect to the Outbound Enablers to the Relay Server. If so, when you post your question, please include the contents of the Relay Server configuration file and the start lines used when running the RSOE. If possible, please also include the contents of the Relay Server log file and the contents of the RSOE log file when you get the HTTP 400 error trying to connect the RSOE.
Thanks,
Reg Domaratzki