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blackholes.five-ten-sg.com


www.five-ten-sg.com/blackhole.php

blackholes.five-ten-sg.com lists sources based of a number of criteria:
  1. spam - Individual spam sources.
  2. dialup - Dialup equivalent ip addresses.
  3. bulk - Bulk mailers that don't require closed loop confirmed opt-in from all their customers, or that have have allowed known spammers to become clients.
  4. multistage - The output server from multi-stage open relay chains that have sent spam to users here.
  5. singlestage - Single stage open relays that are not listed on ORDB yet.
  6. spam-support - Networks that provide services to spammers, including connectivity, dns, email, sales, or any other service.
  7. webform - Web servers running vulnerable versions of formmail.pl or other abusable web-to-mail gateways.
  8. misc - Miscellaneous includes (but is NOT limited to) the following groups. Note that this does NOT include misc.spam which is listed under spam above. 1) /24 blocks of addresses containing systems that are apparently sending bulk email (in volumes apparently comparable with the volume from AOL, Earthlink, Google), with any of the following attributes: missing or bogus reverse dns, reverse dns names in domains with no web server, or domains with boilerplate web content. 2) Systems that are strongly suspected of being multistage open relays (where I have not been able to identify the input stage) or open proxies. 3) Any system that delivers spam here, that appears to be running MS SMTPSVC, and that appears to have relayed the message from China, Korea, Brazil, or any known open proxy. These are generally systems that have enabled the guest account, and spammers are using them as open relays, even though they do require SMTP AUTH. Enabling the guest account allows anyone to relay thru them.
  9. klez - Systems that send virus notifications (klez, sobig, etc) to the supposed sender.
  10. tcpa - Systems that are owned by organizations that blatently violate the TCPA by leaving pre-recorded sales calls here, or by failing to maintain a do-not-call list.
  11. free - Free mail providers.
  12. cr - Systems that have delivered challenge-response spam.


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