Well, we are having problems with Spamhaus.
After years of successful cooperation they deem us spam heaven and escalate every incident to block even further without even notifying.
So far /23 is blocked and next time probably the whole ASN.
Too much power to those people, nobody to actually check what their motivations are, whom they hate and why.
Prometeus spammer heaven, cool, last time I checked at reputable lists we didnt have more than a handful of IPs and we eliminated them all the time.
Did Spamhaus stop spam ? No, this is like the war on islam or drugs, it will never be won, just some guys will make some cool dough because of it.
At least something good is coming out of this, we no longer have spammers signing up already
Hosting emailers is a bad business, even legit ones, most ppl "mark as spam" instead of unsubscribing what they subscribed, is faster that way and then this never stopped real spammers.
When the war on something makes more colateral damage than the actual good and helps some ppl get a lot of power instead, then it is just another kind of a religious/ideological war. Good for the government, bad for the people.