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SORBS (Spam and Open-Relay Blocking System)

Since those initial 78,000 proxies the SORBS DNSbl has grown to an astounding 30 million listed hosts (more statistics at: http://www.sorbs.net/home/stats.shtml . SORBS has expanded over the years to include, hacked and hijacked servers, formmail scripts, Trojan infestations (particularly those with backdoors), and more recently made the move to pre-emptively list all dynamically allocated IP address space.

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Reviewed on Jun 7st, 2015
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    viloria.com Gmail Blocked by Pacific Internet? - Secondthoughts - Viloria.com

    Here's a snippet of the bounced email message: Technical details of permanent failure: PERM_FAILURE: SMTP Error (state 8): 554 5.7.1 Rejected 72.14.214.205 found in dnsbl.sorbs.net And this is what appears in the SORBS Database of servers sending to spamtrap addresses: Additional Information: Rec... Read article

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    cringely.com I, Cringely » Blog Archive Collaborize, Rinse, Repeat - I, Cringely - Cringely on technology

    Of the email black list servers SORBS (www.sorbs.net) stands out because of the number of legitimate IP address that are inadvertently blocked and the draconian technique one must go through to get off the SORBS list. SORBS was run by Michelle Sullivan (aka Matthew Sullivan). It was sold to GFI l... Read article

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    blog.freenode.net Possible SORBS closure « staffblog

    Short blog post this evening but an important one! I suspect many of you rely on the SORBS DNS blacklists to help provide spamless emails. Sadly infrastructure support is being withdrawn by the current providers leaving a significant void to effective spam handling. I encourage you to read over t... Read article

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    belsec.skynetblogs.be Governments and cybercrime : no blablabla save SORBS : A secure democratic Net is a fundamental right

    For information about the possible purchase of SORBS, the source code, data, hosts etc, I maybe contacted at michelle@sorbs.net, telephone +61 414 861 744. For any hosting suggestions/provision, please be aware that the 42RU space is a requirement at the moment, and the service cannot be made int... Read article

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    dnsbl.info DNSBL Information - SORBS - Zombie Networks (zombie.dnsbl.sorbs.net)

    DNS-based block list information/database. Resource to find out information on DNS block lists and check IP's to see if the are block listed in over 100 block lists. Read article

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    blog.proofpoint.com SORBS DUHL DNS Block List Causing Widespread Email Deliverability Issues Once Again | Proofpoint: Security, Compliance and the Cloud

    [Update Aug. 16, 2011: In what may seem like a surprising turn of events, today Proofpoint announced that it had purchased the assets of the SORBS DNSBL service (see, "Proofpoint Purchases SORBS Anti-Spam Service Assets"). The net-net of that announcement... SORBS DUHL DNS Block List Causing Wide... Read article

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    dnsbl.com Al Iverson's DNSBL Resource: June 2009

    SORBS Status: Shutting Down or For Sale Read article

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    astaro.org FYIs: SORBS RBL (blacklist) shutting down July 20 - Astaro User Bulletin Board

    Anyone using the SORBS RBL should switch as it will probably be shutting down on the 20th... announcement at SORBS (Spam and Open-Relay Blocking Read article

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    msmvps.com Controversial email blocklist SORBS sold - Donna's SecurityFlash

    Controversial email blocklist SORBS sold Read article

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    pcmech.com Sorbs???? - PCMech Forums

    I need some help. I had a customer that we were having difficulties getting a requested quotation too. We had tried for two weeks to get thier E-mail Read article

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    forums.kerio.com Kerio: Kerio Connect » sorbs blocking mail from IP

    Sorbs blocking mail from IP Read article

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    spamtacular.com Mickey Chandler's Spamtacular | SORBS Closure Imminent

    930 11 comments http%3A%2F%2Fwww.spamtacular.com%2F2009%2F06%2F22%2Fsorbs-closure-imminent%2F SORBS+Closure+Imminent 2009-06-22+14%3A04%3A34 MickC http%3A%2F%2Fwww.spamtacular.com%2F%3Fp%3D930 for “SORBS Closure Imminent” SORBS wasn't best DNSBL in the world. For instance, they listed all of one ... Read article

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    noh.ro The Art Of Noh: Get rich from spam, now 100% legal and fair

    Get rich from spam, now 100% legal and fair Somebody out there has figured a new, smart way to make money from spam : Removal from the SORBS Spammers database is not automatic, nor is it free, you are required to pay a 'fine'. ... The 'fine' is US $50.00 and is designed to be small enough [...] P... Read article

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    psuedoguru.com Psuedo Guru : Weblog

    Psuedo Guru Blog by a wannabe guru with spelling issues. « July 2006 » Sunday July 16, 2006 Search all Major Blacklists I setup an SMTP server on a new machine last week, and everything seemed to be going fine until mail bounced from an Earthlink recipient. After much testing and log file digging... Read article

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    classy.dk In the hands of the anti-spam bigots - Notes from Classy's Kitchen - Claus Dahl

    The SORBS anti-spam bigots are oblivious to the fact that their test is quite simply broken. Blackmail. It doesn't really matter thay you can pay the money to a self proclaimed charity (a legal defense fund for some anti-spammer) it's still blackmail. No wonder they need a legal defense fund; thi... Read article

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