Spam of ham (1)

Methoden om onderscheid te maken

Niet communiceren met erkende spammers
Realtime Black List (RBL)
Open Relay (http://ordb.org/)
Spam haven (http://OsiruSoft.com/)
Dial up links
Landen (http://www.blackholes.us/)
Eigen black list
Korea
B-G-E.com