I use Spamcop to report incidents of the few spam that gets through my filters. However, The Bat plugin that I used had suddenly stopped working a few weeks ago. Took a few minutes this morning to get it working. Basically the “from” field in the email that they send you has changed and now has devnull.spamcop.net in (it didn’t use to have the devnull field in. Changing the Sender field to have the devnull string has made it all work!