Spam is a global problem yet some countries do little to deter spammers from operating within their borders. These countries tend to have either weak or non-existent anti-spam laws. They become safe havens for spam operations and undermine global efforts to stop spam; even to the detriment of their own nation, networks and citizens.
Some ISPs within these countries are reluctant or outright refuse to take action without such a basis in law, even though most ISPs use “Acceptable Use Policy” (AUP) agreements which are enforced on a contractual basis. It seems that only when the world at large recognizes the poor reputation of these countries is any form of action taken.
This chart shows the number of SBL listings per country including spam sources as well as hosting of spam services – websites, DNS, etc.