rblcheck 1.4 - Command-line interface to Paul Vixie's RBL filter. Copyright (C) 1997, Edward S. Marshall This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -- $Id: README,v 1.1 1999/06/21 16:37:02 bdale Exp $ -- This program is a very basic interface to DNS filters such as the RBL filter developed by Paul Vixie and the MAPS project. The basic idea of the filter is that when someone is blacklisted for email abuse of some sort, a new domain name is resolved of the form "2.0.0.127.domain.name.com", where 2.0.0.127 is the abusive IP address in reverse (for example, 2.0.0.127 would be the IP address 127.0.0.2), and "domain.name.com" is the base domain name of the filtering service (such as "rbl.maps.vix.com", for the MAPS project RBL filter). For information on compiling this program, see the file docs/INSTALL. This program has only been tested by the author under Linux 2.x, Solaris 2.5.1, and Solaris 2.6, but there's no reason it shouldn't work on another platform, as long as a working resolver library exists (the one from BIND will do perfectly). For more information about RBL-style blacklists, please take a look at http://maps.vix.com/rbl/ and http://www.dorkslayers.com/ . For more information about BIND, drop by http://www.isc.org/bind.html . The official home for rblcheck is http://www.xnet.com/~emarshal/rblcheck/ . Any ideas, bugfixes, or porting notes should be sent to me at "emarshal@logic.net". Don't bug the MAPS or Dorkslayers people about this; they didn't write it, and probably woudn't like getting a bunch of mail about it.