I have a little server that pumps out spam to people who pay me for it. (Yes, really.)
Looking at the logs, I'm seeing a lot of "550 Action not taken" at end of data from recipient systems which I believe are running Postfix. Can someone tell me what that means, so I can tell the recipients to undo whatever they did to cause it? The mail typically has a vast spamassasin score and often contains viruses. Due to the volume it's common to have 20 open SMTP sessions per recipient. The recipients use it to tune their spam filters, look for phish campaigns, and the like. R's, John
