Thanks for all the help. I had tried tracing all the IP address, and I had got the China one, but also about 5 others, from medicals centres and universities etc. So I had no idea which was the true IP.
As to china-netcom.com, I tried their website,
www.china-netcom.com, and I get a password thing, and a load of giberish. So I thing complaining there would be futile.
Stickyb, If you could find that address I'd be pleased.
As you huys have said, if you go to
this it is a known hosting exploited open relay .
Search google, it get this site
Where's spam from , which gives Spam Site:
http://www.bulkmailbusiness.com/
and some other stuff. Not sure complaining to them would help
I'll have a further look around. Thanks for all the help.