Some git of a spammer has used this domain in the 'from' line of their email spam. As a result I'm getting literally thousands of 'bounce' messages from spam sent to others - and am trashing email left right and centre as I gradually put filters in to deal with this stuff. Unfortunately, there seems to be no consistent features that I can easily select to filter out the rubbish. Very annoying. Apologies if you're waiting on a reply from me and don't get it!

A two by four is too good for these people....

To be clear, spam sent to me is usually filtered very successfully - but what I'm getting are the system error messages generated by spam sent to other people (not from my servers). The original spam has a faked 'from' address which means that the bounce message comes here.