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All posts

  1. APEWS News and Commentary Roundup

    APEWS, the Anonymous Postmasters Early Warning System , is an “anonymous” blocking list that claims to run in the style of SPEWS. That is t...

  2. SORBS: Accuracy Rates and False Positives

    The blocking list SORBS (aka the “Spam and Open Relay Blocking System”) was created in 2002 by Australian Matthew Sullivan. SORBS publishes...

  3. Status of dnsbl.radparker.com: NOT A DNSBL

    For a time, SORBS was found to be inaccurately referring to “dnsbl.radparker.com” on the mail server configuration pages over on the SORBS...

  4. SORBS: Changes?

    This thread on the news.admin.net-abuse.email newsgroup suggests that changes are afoot at SORBS. Apparently the entire spam.dnsbl.sorbs.ne...

  5. Changes at UCEPROTECT

    Whatever your opinion of UCEPROTECT , hold on to your hat, as things are apparently about to change. This posting to the USENET newsgroup n...

  6. Status of dnsbl.tqmcube.com: DEAD

    The DNSBL TQMCUBE was created by David Cary Hart sometime in 2004 or 2005. The front page of the website www.tqmcube.com was modified to sp...

  7. Status of blackholes.intersil.net: DEAD

    I've recently received a few requests regarding blackholes.intersil.net. According to this message to news.admin.net-abuse.blocklisting...

  8. Status of blacklist.spambag.org: DEAD

    As of Sunday, May 27th, 2007, the blocking list Spambag, with the DNSBL zone blacklist.spambag.org , is no longer available. The website www...

  9. Spamcop BL: Take Another Look (It’s Accurate!)

    If you know me, you know that in the past, I’ve made no secret of my disdain for the Spamcop DNSBL, aka the SCBL. I’ve worked in spam preve...

  10. Status of relays.orbs.org: Shut down, legal troubles in 2001

    Remember ORBS? Short for “Open Relay Behavior Modification System,” it was a blocking list run by Alan Brown from New Zealand. (Mr. Brown ra...

  11. Status of rbl.cluecentral.net: ALIVE

    The DNSBL “ rbl.cluecentral.net ” has been revived. Its maintainer, Sabri Berisha, had previously shut it down in November 2005. ...

  12. Which DNSBLs work well?

    This is a question I get quite often and it’s a tough one to answer. I don’t really bother with running my own mail system any more, as I’m ...

  13. NJABL Dynablock List Now Obsolete

    With the advent of Spamhaus's new PBL anti-spam blocking list, it appears that the NJABL Dynablock list is now obsolete. I just saw the ...

  14. Spamcop Roundup

    5/22/2007: This information is out of date. Please click here for my latest take on Spamcop's SCBL. My most recent take on Spamc...

  15. Spamhaus ZEN: Recommended

    Look for a longer article from me in the near future on Spamhaus; I'm collecting a ton of data against a large spam corpus and hope to s...

  16. DCC: Spam filter?

    The Distributed Checksum Clearinghouse (DCC), created by Vernon Schryver, is a very powerful tool to help system administrators identify and...

  17. Spamcop BL: A blacklist with a hair trigger

    The Spamcop Blocking List (SCBL) is a DNSBL populated with data obtained from spamtrap hits and spam reports from users of the popular Spam...

  18. Status of block.blars.org: DEAD

    The “Blars” DNSBL (block.blars.org) appears to have gone on walkabout. Created in 2002, the “Blars Block List” was an aggressive, semi-pri...

  19. Status of relays.ordb.org: DEAD

    Created by Thomas Jensen in 2001 , the Open Relay Database (ORDB) was one of the multitude of open relay spam blocking lists to come about ...

  20. Status of opm.blitzed.org: DEAD

    The primary project of the “Blitzed” group is the Blitzed Internet Relay Chat (IRC) network. They also operated a DNSBL zone called opm.b...

  21. Status of relays.visi.com: DEAD

    The zone relays.visi.com was home to the VISI.com Relay Stop List (RSL). According to the site , “RSL was created by volunteers, VISI.com us...

  22. Status of relays.radparker.com: DEAD

    The DNSBL relays.radparker.com is no longer valid. If you are using relays.radparker.com in a mail server or spam filtering product, please ...

  23. CBL: Block those exploits!

    The Composite Blocking List (CBL) is a DNSBL that helps you block mail from exploited computers. That includes abused open proxy servers, a...

  24. Status of rbl.maps.vix.com: INVALID DOMAIN

    In January 2007, MAPS (Mail Abuse Prevention System) co-founder Paul Vixie noted on the NANOG mailing list that he continues to receive sig...

  25. Status of lbl.lagengymnastik.dk: DEAD

    The DNSBL lbl.lagengymnastik.dk is no longer active . It ceased operation back in 2003 or 2004. In January 2007, Henrik, the operator of thi...