I don't know why you have set EPSG:42304 as projection. This value is not defined in the SRS list or the EPSG registry.
EPSG:3059 has the same parameters as your WKT definition. You have to add it to your list of wms_srs to allow requests in that srs.
EDIT
Looking at your WMS request: Why do you send &SRS=EPSG:3059%20 ? Can you try without %20?