[AccessD] Thunderbird junk filter

Does anyone know how to adjust the Thunderbird junk filter?  I am getting a fair amount of junk, 
which I click the junk for but it just continues to deposit it into my in box.  Things with obvious 
clues like my own email address in the from even though what you see in the from is not my email 
address (spoofed address).

It seems like this would be an instant "send to junk".

-- 
John W. Colby
www.ColbyConsulting.com