Spammers are turning to image spam to avoid filters. The introduction of grey-listing has dramatically reduced imaginator.com spam but in the end spam protection is a never ending arms race – until someone comes up with a new way to do email. And that ain’t happening any time soon.I’ve been graphing bunker’s mail statistics. The mail server is rejecting up to 40 messages a minute, and that’s before they even hit the spam filter, the virus filter, a content filter and finally get accepted for delivery. So the odd one that gets through has had to pass lots of tests. Consider it special…