Passive Spam Block List

PSBL

News

List query

Mail server

If you want to use this list on your mail server, tell it to query the psbl.surriel.com zone, in exactly the same way you would query other DNSBL zones, like sbl.spamhaus.org or list.dsbl.org. Anybody is free to use PSBL.

Exim: add the following to the acl_check_rcpt section:

  deny    message       = $dnslist_text
          dnslists      = psbl.surriel.com

Sendmail: add this to the m4 file:

FEATURE(`dnsbl', `psbl.surriel.com')

Postfix: add the following to the smtpd_recipient_restrictions section:

  reject_rbl_client psbl.surriel.com

Zmailer: for late rejection at rcpt stage:

_rbl0   rcpt-dns-rbl "psbl.surriel.com"
_rbl1   test-rcpt-dns-rbl +

Spamassassin

PSBL can also be queried from spamassassin. The following lines can be added to /etc/spamassassin/local.cf or your own ~/.spamassassin/user_prefs:

header   RCVD_IN_PSBL          eval:check_rbl('psbl-lastexternal', 'psbl.surriel.com.')
describe RCVD_IN_PSBL          Received via a relay in PSBL
tflags   RCVD_IN_PSBL          net
score    RCVD_IN_PSBL          0 1.00 0 1.00

This rule is included by default in spamassassin-3.3.0+, so you do not need to make any configuration changes to use PSBL with a recent spamassassin.

Rsync

The DNSBL can be rsynced as a plain text file.

$ rsync -z psbl-mirror.surriel.com::psbl/psbl.txt .