[Exim] testvirus.org tests

Hi

I have exim4 with exiscan and clamav in place.
I tested this installation with testvirus.org.

Everything is detected except for test-mails #5 and #8.
I see, this may be about decoding.

Is this a fault of clamav or of exiscan?
How do you check you av-config?

Thanks,
Steffen


PS: Which kinds of archives can exiscan handle? Can this be extended by
installing different utilities?

PPS: Is there a exiscan mailing list?