Hi
I think i have a solution 4 u =;-)
Try this one :
all_spam_to *@*
blacklist_to *@test.de
score USER_IN_ALL_SPAM_TO -100000
score USER_IN_BLACKLIST_TO 100000
so all users will be passed EXCEPT all with @test.de ...
u can also use a stricter solution : blacklist_to
user@test.de
Hope this helpīs , i know itīs a bit late
greets
cybermonk
P.S.:: I needed to be registered to write that - normally this is to much work for one answer !!!