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We operate our network and mail server(s) for the
benefit and convenience of OUR users only. Therefore, unsolicited
commercial and/or bulk e-mail is NEVER welcome here. As a
means of enforcing this policy, connection control and spam rejection
for our mail server(s) is handled primarily via public DNS-based
blacklists, including (but not limited to) the following:
1. SBL
- The Spamhaus Block List. This is a database of verified
spam sources (including spammers, spam gangs and spam support
services. See: <http://www.spamhaus.org/sbl/>.
2. SORBS
- Spam & Open Relay Blocking System. See: <http://www.dnsbl.sorbs.net/>.
3. CBL
- Composite Blocking List. This is a list of hosts (mostly
virus/trojan-infected "zombies") known to send mail to spamtrap
addresses (i.e., those which should NEVER get any mail). See:
<http://cbl.abuseat.org/>.
4.
SPAMSITES - This is a database of
"spammer resources for hire". See: <http://www.spamsites.org>.
5. The <http://dialups.visi.com>
DNSbl zone, which serves data imported from the Pan-Am
Dynamic List (PDL) (see: <http://www.pan-am.ca/pdl/>.
This list contains sources of direct-to-MX spam which are
believed to be dynamically assigned (i.e., dial-up, DSL, "cable modem",
etc.).
6. Blitzed
Open Proxy Monitor. This is a database of
insecurely misconfigured hosts abusable by spammers -- much like open
mail relays, only more dangerous
due to their facilitating (often anonymous) connections on virtually
any port, using virtually any service, from virtually any source, to
virtually any destination. See: <http://opm.blitzed.org>.
7. 510
Software Group Blackholes List. See: <http://www.five-ten-sg.com/blackhole.php>.
8.
DSBL - Distributed Server Boycott List (<list.dsbl.org>
and <multihop.dsbl.org> zones only). This list
contains confirmed open relays. See: <http://dsbl.org/main>.
9. Various <blackholes.us>
zones (see: <http://blackholes.us>),
the precise "mix" of which may change from time to time as deemed
necessary (see also #6 & #7 below).
We would like to express our
sincere appreciation to the operators of the above-noted services for
their generous contribution to the health of the 'net as a whole, and
that of our mail servers in particular.
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