Below is an extract from the current /etc/mail/access.db file. Emails from those servers are rejected, since spam was sent from them in the past.
Emails from servers with invalid reverse DNS lookups are also rejected, and so are emails from senders who fail an SPF check.
Date: Sat Jan 21 09:01:23 2012
| Domains / hosts | IP addresses / networks |
|---|---|
| asianet.co.th bezeqint.net chello.pl co.za comcast.net dsl.telesp.net.br fastwebnet.it hinet.net inetia.pl jazztel.es mm.pl net.ae net.do net.il net.in net.pl net.tw ono.com proxad.net rima-tde.net sbb.rs telecomitalia.it tpnet.pl ukrtel.net wanamaroc.com |