Problem with ms-exe banned files

[Richard Smits]

Hello,

We keep getting problems with the ms-exe detection scheme in amavis for 
banned files. I was wondering :

Does Amavis only look at the extension of the file ? In this case a 
".dat" file, or does it really test the file ?

For example in linux : file file.dat
file.dat: DOS executable (device driver)

I know that this isn't a device driver, but a part from a electronical 
software scheme.

How can we avoid this ? Or manipulate the ms-exe detection ?

X-Amavis-Alert: BANNED, message contains .exe,.exe-ms,file.dat

Greetings ... Richard Smits