Winkel Triple Projection WMS trouble

[mark@deblois.nl]

Hi all,

I am struggling getting a proper WMS service going in Winkel Triple
projection. I am using the code below as I have not been able to find an
EPSG code for Winkel Triple.

PROJECTION
  "proj=wintri"
  "ellps=WGS84"
  "lat_1=45"
END

The data itself is in EPSG:4326.

The GetMap request spits out a good looking projected image but getting
the WMS up and running is causing the trouble. I have a feeling the
problem is related to the WMS_SRS tag belonging to the MAP section. As I
don’t have a EPSG code I do not know what information to include. Any
advice would be greatly appreciated.

Regards,

Mark