Thanks Tonic Please and to Blue Robin.
I have downloaded the Mailwasher program and will give it a go. The problem that I have is that I get emails from all over the place - Tehran this morning!! so I often have strange addresses trying to contact me as I run an aviation consultancy. What really gets me is the fact that this spam costs me time and consequently munny!! The Scottish blood comes out here. I have probably been a bit naive believing that dot aero would protect me rather than being the only one to introduce this disease.