Thanks for visiting! Remember that nowadays, (most) blocklists don't usually govern deliverability and inbox placement on their own. Want to learn more about email marketing best practices, email technology, and deliverability troubleshooting? Then you'll want to check out my other site, Spam Resource.

Al Iverson on anti-spam blocking lists, called DNSBLs or blocklists. Once there were many, now there are few. Determined to definitely denote when DNSBLs are deceased. Over on Spam Resource, you'll find more info about email, spam and deliverability.

If you find my site valuable and want to say thank you, please consider making a donation to Care for Real, a local nonprofit here in Chicago that helps those in need with food, clothing and more. Thank you.

Half Wombat

Latest posts

  1. Status of relays.osirusoft.com: DEAD

    This one has been gone for a long while now, but somebody asked me about it the other day, so I figured I should post something about it her...

  2. Status of ix.dnsbl.manitu.net: DEAD

    The maintainers of the "NixSPAM" blocklist (with a DNSBL zone of ix.dnsbl.manitu.net) have decided to shut down. As of January 16,...

  3. Status of dnsbl.sorbs.net: DEAD

    Multiple sources are reporting (and Proofpoint has confirmed -- see below) that the SORBS blocklist is shutting down. According to SORBS w...

  4. Status of ubl.unsubscore.com: OFFLINE

    LashBack's unsubscribe blacklist ("UBL"), as described by its publisher "is a unique, real-time blacklist of IP addresse...

  5. Status of dnsbl.inps.de: DEAD

    Christian Jung launched the inps.de DNSBL way back on December 29th, 2007 . Christian described the listing criteria as follows: "Every...

  6. Status of all.rbl.webiron.net and bsb.spamlookup.net: DEAD or BROKEN

    Two anti-spam blocking lists appear to have died or malfunctioned recently. Users on the Mailop mailing list  are reporting that Webiron (al...

  7. Status of megarbl.net: DEAD

    The DNSBL "MegaRBL.net" is no-more. According to the Internet Archive, MegaRBL had been around since at least some time in 2013 . ...

  8. Status of bl.emailbasura.org: DEAD

    The DNSBL Email Basura is no more. Email Basura ("Trash" in Spanish) appears to have been online since at least 2004, according to...

  9. Status of combined.rbl.msrbl.net: FIXED

    If you use any of the MSRBL DNSBLs, take note: For the second time since 2017, the domain msrbl.net has expired and its name servers are res...

  10. Status of exitnodes.tor.dnsbl.sectoor.de: DEAD

    As reported by Word to the Wise , the DNSBL at exitnodes.tor.dnsbl.sectoor.de seems to have gone extinct. Like has happened with other list...

  11. Status of dnsbl.cyberlogic.net: BROKEN

    As reported on the mailop mailing list on Friday May 25, 2018, the blocking list at dnsbl.cyberlogic.net now contains a "wildcard...

  12. New blocklist: SPFBL

    Leonardo from SPFBL shared the following information with me and I thought it would be useful to share it here with folks. He writes:  We ...

  13. Status of bad.psky.me: QUESTIONABLE

    Noted and respected spam filterer Spamhaus is indicating that they believe the the Protected Sky (bad.psky.me) blocklist is "fraudulent...

  14. Status of anonwhois.org: DEAD

    I first blogged about the ANONWHOIS blocking list  back in 2010 . It was very useful to identify domains were ownership information was cloa...

  15. Status of bl.spamcannibal.org: DEAD

    Back in 2016, I used this page to report on a temporary system issue with the Spam Cannibal DNSBL. Today (May 30, 2018) I'm updating t...

  16. SURBL: Adding ABUSE sublist, deprecating SC & AB

    The domain blocking list SURBL announced today that it is deprecating the SC (Spamcop) and AB (AbuseButler) sublists , migrating their data ...

  17. Status of no-more-funn.moensted.dk: DEAD

    The "No More Funn" blocking list (DNSBL zone no-more-funn.moensted.dk) was run by a gentleman from Denmark using the alias dr. Jør...

  18. What is blacklist.zap?

    Here's a blast from the past: Remember blacklist.zap? There were various "blacklist.zap" lists and they were all indicative ...

  19. Status of dnsbl.burnt-tech.com: DEAD

    Uh-oh! On or about September 19th, the domain burnt-tech.com seems to have expired. Now when you visit the website, you are informed that th...

  20. Status of truncate.gbudb.net: ALIVE

    The " Truncate " DNSBL (zone truncate.gbudb.net) lists IPv4 addresses that have been observed transmitting "email containing ...

  21. Status of dul.ru: DEAD

    As noted by participants of the SDLU mailing list , the Russian Dial-up User List at the domain  dul.ru is no more. The Russian Dial-up U...

  22. Reminder: AHBL is Shutting Down

    As previously reported , the AHBL DNSBL has been shut down. Please note that the publisher of the AHBL DNSBL has indicated that she will ...

  23. Status of rbl.orbitrbl.com: DEAD

    Today, Mark E. Jeftovic of EasyDNS warned readers of the Mailop list that it is unwise to use the DNSBL "rbl.orbitrbl.com" due to ...

  24. Status of dnsbl.ahbl.org: SHUTTING DOWN

    On March 26, 2014, DNSBL administrator Brielle Bruns announced that the Abusive Hosts Blocking List DNSBL s are to be shut down. In email ...

  25. Status of dnsblchile.org: ALIVE

    DNSBL Chile , created in 2011, appears to be a Chilean homegrown effort to tackle spamblocking from a local perspective. As they explain on ...