Graylisting II

Hi, 

Suppose I have a spam filtering system that gives scores to spam
messages and records the relay IP with the spam score. Periodically I
get the most prolific spam sending relays that exceed a certain spam
score, and I record these relay IPs in a file, which I call the
"craplist".

Can I have dccm greylist just the craptlist?
Thus can I grey list based on lists of IPs?

My excuses if this falls out of RTF`man dccm`.

Chris