Someone has taken over one of my email addresses I know one of the IP addresses
Recently I am getting on one of my email addresses hundreds of return (block emails to people I don't know about a topic I know nothing about.
in reading the returns I've discovered most if not all come from one IP number. Is there a service I can go to and type in that IP addresses and have it blocked or shut down?
MacBook Pro (17-inch Mid 2010), OS X Mountain Lion (10.8.4)