The evidence used to be in the spam reporting database but has now been removed.
The address 18.104.22.168 belonged to Comcast Cable, originally a New Jersey address which may have been re-assigned to Naples, Florida. It is still a portable address, so it is could be another Microsoft zombie. It is now listed in most of the major lists.
The registration details of supermed123.com are:
Domain Name: SUPERMED123.COM Registrar: INTERCOSMOS MEDIA GROUP, INC. D/B/A DIRECTNIC.COM Whois Server: whois.directnic.com Referral URL: http://www.directnic.com Name Server: NS2.WDRHOSTING.COM Name Server: NS4.BIGHOSTSOLUTIONS.COM Registrant: Roger A-1 Media Hornsgatan 66b 118 49 Stockholm, Stockholm 118 49 SE 46 8 603 83 50 Domain Name: SUPERMED123.COM Administrative Contact (and technical contact): Roger, thom email@example.com Hornsgatan 66b 118 49 Stockholm, Stockholm 118 49 SE 46 8 603 83 50 Domain servers in listed order: NS4.BIGHOSTSOLUTIONS.COM 22.214.171.124 NS2.WDRHOSTING.COM 126.96.36.199
Good to see that it's business as usual in Florida ... Those microsoft zombies are proving very productive!