See:

• Email spam

ToDo

• https://www.abuse.net/
• http://www.uceprotect.net/en/index.php
  • http://www.backscatterer.org/
  • http://www.whitelisted.org/
• https://www.abuseat.org/ - rather not
• DNS/DKIM
• DNS/SPF
• SURBL

Interaction with big Email Providers

• Google
• Microsoft
• Yahoo