I have filled my 500 domains with SPAM originating content, and you have DONE NOTHING other than gather this information and FAILED to take action on the originators. Over 70% of the SPAM has come from one source using multiple servers to bypass your filters and to clog my trash and SPAM folders with their unwanted e-mails.
Your filters are worse than Google's, and let way more through than is necessary or expected.
The 500 domains are listed within my settings, and you are able to see the origin IP address within the source code. If I can find it, then you can, but I am not able to take action against them - YOU ARE.
Please do something to reduce the amount of SPAM that I am getting (up to 10 e-mails per day), by researching, as I've done, and then taking appropriate steps to nullify their ongoing illegal activities.