blacklist_to

[M.Lewis]

One of my most productive rule 'hits' is on users that are in 
blacklist_to. My mail is sucked down with fetchmail from my provider, so 
I don't have the luxury (I don't think) of blocking mail for unknown 
users at that level.

Is it possible to have a rule in blacklist_to for NOT [EMAIL PROTECTED] ? 
If so, how.

Thanks,
Mike