>A possible long term problem is that these ip's will probably resume sending >valid traffic sometime in the future
there are a lot of rotten Class C's. I think the spammers obtain a full class from the friendly operator. 66/8 sources a lot of pollution >, when their ISP shuts the spammer off >(hopefully). some many ISPs would have blocked the subnet or Class C that it would be "burned" for any further usage. >Do wee need to maintain another access control list for each >mail server. ?? Len
