1 ;;; spam.el --- Identifying spam
2 ;; Copyright (C) 2002 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
31 (defvar spam-blackhole-servers
32 '("bl.spamcop.net" "relays.ordb.org" "dev.null.dk"
33 "relays.visi.com" "rbl.maps.vix.com")
34 "List of blackhole servers.")
36 (defun spam-check-blackholes ()
37 "Check the Recevieved headers for blackholed relays."
38 (let ((headers (message-fetch-field "received"))
42 (goto-char (point-min))
43 (while (re-search-forward
44 "\\[\\([0-9]+.[0-9]+.[0-9]+.[0-9]+\\)\\]" nil t)
45 (push (mapconcat 'identity
46 (nreverse (split-string (match-string 1) "\\."))
49 (dolist (server spam-blackhole-servers)
51 (when (query-dns (concat ip "." server))
52 (push (list ip server (query-dns (concat ip "." server) 'TXT))