spambag.org
- usagespambag.org
is currently being prepared for public use. There
will be two ways to access the spambag.org
list.
This is the traditional distribution method, via a DNS zone. The DNS zone
is blacklist.spambag.org
. It is suitable to be used as a typical
E-mail filters, and most popular mail servers already have the ability to
access DNS-based lists.
NOTE: Before using
blacklist.spambag.org
as a mail filter, think about it. Read the
listing criteria.
blacklist.spambag.org
is not meant to be necessarily a list of
spam sources, but a list of spam support service providers. It's very likely
that non-junk mail from the listed networks will be caught. Suggestion:
simply add a header tag instead of blocking the mail, that can be easily
filtered on by the recipient; or provide the recipients with the means to opt
themselves in or out of the mail filter.
NOTE: Be sure that your own IP addresses are explicitly whitelisted, in the event that your ISP ever makes the honors.
If you are handling a fair amount of mail, you will get much better performance if you were to set up a zone-transferred copy of the blacklist.spambag.org DNS zone. As of right now, zone transfers are available from ns0.courier-mta.com and rack0.amplex.net . If you would like, you can be added to the zone's NOTIFY list by contacting <spambag@spambag.org>
This is a rather novel way to distribute IP address ranges. I've been
using spambag.org
as an HTTP filter on several high-traffic web
sites, with some success. Using Apache's mod_rewrite
module,
HTTP client requests from listed IP addresses are redirected to a static page
explaining why they are blocked from accessing my web sites.
To use an HTTP filter, first download this
simple script. You will need to customize it a little bit, according to
your system configuration. The basic idea is to execute this script once or
twice a day. The script checks if the spambag.org
list has
changed, if so the script downloads a mod_rewrite
-compatible
.htaccess
script, which is signed by spambag.org
's
GnuPG key. If the signature is valid, the updated rewrite file is installed
on your system.
Additional instructions can be found in the comments at the beginning of
the sample script, which you can customize according to your system's
configuration. Instead of redirecting listed traffic back to
www.spambag.org
you may - and are encouraged - to use your own
explanation page. For example, if the script is customized is install the
rewrite file as /etc/httpd/blacklist.conf
, simply insert the
following into Apache's httpd.conf
file:
Include "/etc/httpd/blacklist.conf"... and you're all set.
You will also need to add something at the end of the script that restarts
your Apache processes so that the new configuration file can be reread.
Please do not execute this script more than once or twice a day. By checking
the serial number on the blacklist.spambag.org
zone, the script
is designed to minimize the network traffic, but every little bit helps. Note
that you may experience problems downloading any updates if you are having
problems with your DNS server.
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