Just a little anecdote about how good spamhaus really is. I used to co-locate in Toronto, right next door to a bunch of heavy duty spammers. It so happened that there was a class C split in to three subsections, two of them belonged to the spammer and a tiny 16 host range in the middle that belonged to us.
Spamhaus figured this all out by themselves and took great care not to cause any collateral damage while going after the spammers. Pretty impressive, especially since that would have been very hard to figure out from the outside.
Spamhaus figured this all out by themselves and took great care not to cause any collateral damage while going after the spammers. Pretty impressive, especially since that would have been very hard to figure out from the outside.