You do not mention starting the .stream file. You can use
StreamManager or the Wowza Manager to start a stream, or add it to
StartUpStreams and re-start Wowza to start pulling the stream.
You will use MediaCaster type "rtp" to start these streams by one of the methods above. When you do that you will see a publish event in the logs, and info about the connection and stream, or problems connecting to the stream.