There’s no reason to match the resolution for the same of having raster effects have the same arbitrary resolution as the imported PSD, but it does make sense to give raster effects the same resolution that your output provider requests for raster art, since raster effects are a form of raster art.
125 ppi for a Lambda? As far as I know there are two resolutions for the Lambda 200 ppi and 400 ppi so I assume that if you give the sjop the 125 ppi file they will res it up.
However if your lab says fine to the 125 ppi and you have done this before it would seem to make sense.
However if they are using Illustrator to out put the file, which I do not think they would since I believe the file has to be a tiff. I would set the raster image effect to 200ppi.
But only on out put or change it before sending the file to the lab.
Thanks, Scott and Wade, that clears it up nicely!!