The bounding box request is different to the bbox received

[José Vicente Higon]

Hi list,
I have a problem when I request a GetMap in mapserver 4.9 (FWtools
linux). I request a layer in tiff format with a especific bounding box
but the response doesn't have the same bounding box !!
For instance :
request=GetMap&version=1.1.1&width=64&height=64&layers=odcv05&styles=&srs=EPSG:4326&format=image/tiff&bbox=-0.3515625,38.583984375,-0.3076171875,38.6279296875

but if I do "gdalinfo" ... I obtain

minx= -0.3512192, miny = 38.5843277, max = -0.3079605  maxy = 38.6275864

Is mapserver operating correctly?

Thanks in advance.