On 25 Jul 2005, at 12:39, Bill Verity wrote: >We've been blocked a lot recently by SpamCop. Anything we should do to avoid this problem? Subscribers can't have reliable (list) mail delivery and use SpamCop. Maelstrom was blocked 3 times in 4 days late last week by SpamCop, their web page claims that the block is due to something turning up in one of their double secret spam traps which they will neither disclose or discuss. Given that the server is in its final year of operation I have repeatedly gone through the mail queues looking for mail stalled due to SpamCop blacklisting, and deleted the subscribers and their mail. I will no longer support subscriptions from ISP's using SpamCop because: Subscribers can't have reliable (list) mail delivery and use SpamCop. First... we aren't talking about blacklisting, we are talking about a single organization that has repeatedly blacklisted us over a period of several years, never to my knowledge because we actually did anything wrong. The server has no human users (aside from me) and does not relay. We've been blacklisted because other sites (Yahoo) have apparently had mail server malfunctions (according to spamcop) that garbled the headers leaving us implicated. We've been blacklisted because we bounced mail forged by W32.Netsky.C that was sent TO us. We've been called on the carpet repeatedly due to forgeries submitted by irate subscribers trying to punish other subscribers. By subscribers reporting *valid* (and not-so-valid) commercial messages posted by other subscribers. And, yes, it's embarrassing but we've been blacklisted most often by confused list-owners who forwarded spam sent to their generic *-owner accounts. In all cases where we've had contact with SpamCop we've seemingly found them to be polite well-intentioned people who responded quickly and corrected *their* problems. We've been assured that they would take steps to be a bit less trigger happy in the future towards our server, and then they blacklist us again. The truth, in my experience is: Subscribers can't have reliable (list) mail delivery and use SpamCop. -Kary Blacklisting. My problems have been mostly limited to SpamCop but given my understanding that these days most spam is coming from "zombie" networks comprised of thousands of virus compromised PC's, none with any guaranteed life expectancy or guaranteed static IP's, isn't this particular approach to fighting spam getting a bit long in the tooth? As far as SpamCop goes I can say with certainty that the "cure" has always had far more negative impact on us than the disease.