Does running spam through dccproc help the good fight?

When I get spam that DCC doesn't catch (very low counts) I've been
feeding it through dccproc like:

        | dccproc -t many -w ~/.dcc/whiteclnt

I was hoping that it would compute sums and send them to the DCC
servers, such that the next time anyone got a similar spam, DCC would
notice it.   Is this a realistic understanding?  If it doesn't help
the fight against spam, there's really no reason for me to do this
extra manual step...

Thanks.