[MapProxy] Unsupported srs EPSG:31468

[karsten]

Hi All, 

I have run into the error above using the demo page when I added a new layer
in EPSG:31468. The WMS is working for all other projection of the same layer
except for EPSG:31468, even though that is the native projection in my
MapServer map file. Also MapProxy the demo page works for TMS including
EPSG:31468
For WMTS it says for that layer : not compatible with WMTS 

Furthermore surprisingly I was able to run mapproxy-seed and successfully
created 60% of the tiles, where I stopped the process to resume at a later
time. Also I changed the file owner of all tiles to be www-data:www-data.

How can I fix this ?
See config below
Karsten
--------------------------

I have the following config for MapProxy 1.6 in mapproxy.yaml:

services:
  demo:
  tms:
    use_grid_names: true
    # origin for /tiles service
    origin: 'nw'
  kml:
      use_grid_names: true
  wmts:
  wms:
    md:
      title: MapProxy WMS Proxy
      abstract: This is a minimal MapProxy example.

layers:
  - name: bayern_gemeinde
    title: Gemeinden in Bayern 31468
    sources: [bayern_gemeinde_cache]


caches:
  bayern_gemeinde_cache:
    grids: [bayern_31468]
    sources: [gemeinde_wms_31468]

sources:
  gemeinde_wms_31468:
    type: wms
    req:
      layers: gemeinde_merc
      url:
http://terra2.terragis.net/cgi-bin/mapserv?map=/mnt/maps/vfs_mapproxytest.ma
p
    coverage:
      bbox: [4268292.1572492,5251787.8034355,4638833.195067,5730276.9668371]
      bbox_srs: 'EPSG:31468'

grids:
    bayern_31468:
        srs: EPSG:31468
        bbox:
[4268292.1572492,5251787.8034355,4638833.195067,5730276.9668371]
        bbox_srs: 'EPSG:31468'
        min_res: 1234.7215554725824


globals:
  image:
    formats:
      terra_image_jpeg:
        format: image/jpeg
        resampling_method: nearest
    jpeg_quality: 90