news.admin.net-abuse.email

 http://spamcop.net/ Quick spam reporting                                                           
 http://www.samspade.org/ Very good tools                                                           
 http://www.lava.net/services/traceroute.html traceroute                                            

Open Relay Black List http://www.orbl.org/

 http://mail-abuse.org/rbl/candidacy.html  Maps info on candidacy                                   
 http://mail-abuse.org/index.html Maps info                                                         
 http://mail-abuse.org/rss/ Maps Relay stopper                                                      

new RBL+ (rbl+.mail-abuse.org) which is a combo of these three
 DNSBLs but it's not free. See http://www.mail-abuse.org/rbl+ 

 http://www.abuse.net/relay.html Relay testing utility                                              
 http://www.deja.com/home_ps.shtml Deja power search.

relays.mail-abuse.org (RSS)
blackholes.mail-abuse.org (RBL)
dialups.mail-abuse.org (DUL)