Below is part of the FAQ from njabl.org. It shows a sample of a
spamassassin configuration. If you query the njabl.org database it
will return one or more of the 127.0.0.x IP address strings if the
address of interest is in the database. For example, to query your
address simply reverse your IP address and type: (x = your real
numbers)
# host 103.28.xx.xxx.dnsbl.njabl.org
# host 103.28.xx.xxx.dnsbl.sorbs.net (for the sorbs database)
Notice that you can temper scores base on whether a DUL, OPEN RELAY,
PROXY, or etc. is found within spamassassin.
Plug your friend's address in to see what happens.
Regards, Mike Klinke
====================== from the njabl.org FAQ ======
Our dnsbl can also be used to tag potential spam messages (letting
individual users decide what action to take) using Spamassassin.
After you have Spamassassin properly installed, add the following to
your local.cf, probably /etc/mail/spamassassin/local.cf: (note:
according to the Spamassassin developers, these rules will only work
with Spamassassin up to version 2.5x and will not work properly with
Spamassassin >= 2.6x)
header IN_NJABL_ORG rbleval:check_rbl('njabl','dnsbl.njabl.org.')
describe IN_NJABL_ORG Received via a relay in dnsbl.njabl.org
tflags IN_NJABL_ORG net
header NJABL_OPEN_RELAY rbleval:check_rbl_results_for('njabl',
'127.0.0.2')
describe NJABL_OPEN_RELAY DNSBL: sender is Confirmed Open Relay
tflags NJABL_OPEN_RELAY net
header NJABL_DUL rbleval:check_rbl_results_for('njabl',
'127.0.0.3')
describe NJABL_DUL DNSBL: sender ip address in in a
dialup block
tflags NJABL_DUL net
header NJABL_SPAM_SRC rbleval:check_rbl_results_for('njabl',
'127.0.0.4')
describe NJABL_SPAM_SRC DNSBL: sender is Confirmed Spam Source
tflags NJABL_SPAM_SRC net
header NJABL_MULTI_STAGE rbleval:check_rbl_results_for('njabl',
'127.0.0.5')
describe NJABL_MULTI_STAGE DNSBL: sent through multi-stage open
relay
tflags NJABL_MULTI_STAGE net
header NJABL_CGI rbleval:check_rbl_results_for('njabl',
'127.0.0.8')
describe NJABL_CGI DNSBL: sender is an open formmail
tflags NJABL_CGI net
header NJABL_PROXY rbleval:check_rbl_results_for('njabl',
'127.0.0.9')
describe NJABL_PROXY DNSBL: sender is an open proxy
tflags NJABL_PROXY net
score IN_NJABL_ORG 0.38
score NJABL_DUL 0.62
score NJABL_MULTI_STAGE 0.75
score NJABL_PROXY 3.00
score NJABL_OPEN_RELAY 3.00
score NJABL_CGI 1.50
score NJABL_SPAM_SRC 3.00
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