Hello,
I finally cracked and spent a day configuring our
mailservers for active spam blocking.
So, if you are realy realy sure that you haven't 
received a mail that you should have, it may be 
because the sender ISP/relay is blacklisted on 
some of the major internet spam filters... in that 
case, contact me with the sender email and I will 
see what I can do.

Cheers,
Yann Stettler