The e-mail address for my website is y-coach@y-coach.com. This is posted on my website and I think it is necessary to have for my visitors to contact me.

The problem is that it appears that some groups have hijacked it. they use something like bob246@y-coach.com and send out spam including porn.

My question is how do I stop this and how do I find out who is doing it?

Thanks,
Schann
http://www.y-coach.com