OpenBSD spamd

OpenBSD's spamd(8) is a SPAM deferral daemon which rejects false mail in a very efficient way.
A variety of databases exist here which can be specified in the /etc/mail/spamd.conf file, and loaded using spamd-setup(8).

• U of A Traplist
  The University of Alberta runs a large spamd install in front of their main MX's, and perform extensive greytrapping of hosts that mail to invalid users while on the greylist. Hosts are removed 24 hours after they get trapped.

  OpenBSD mirror location: http://www.openbsd.org/spamd/traplist.gz

• Nixspam
  The Nixspam suspicious sources list formatted for spamd.

  OpenBSD mirror location: http://www.openbsd.org/spamd/nixspam.gz

• China CIDR
  "Because these two countries have the chronic and pervasive practice of a) providing a safe haven for their own spammers; b) providing a safe haven for U.S. spammers; c) hosting mail servers which are open relays or proxies; d) being either too ignorant and/or lazy to secure those servers; and most importantly, e) almost never responding to or addressing abuse complaints (in the rare event their abuse reporting addresses even work); I decided to block all email from China and Korea altogether. So, in April 2002, I started compiling lists of all net blocks assigned to Korea and China to be used to that end." (from their web page)

  Original source location: http://www.okean.com/chinacidr.txt
  OpenBSD mirror location: http://www.openbsd.org/spamd/chinacidr.txt.gz

• Korea CIDR
  See China CIDR.

  Original source location: http://www.okean.com/koreacidr.txt
  OpenBSD mirror location: http://www.openbsd.org/spamd/koreacidr.txt.gz