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The SMTP IPv4 DNS Block List.
Current Block List IP Count: 448 Million
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Below are some External Links of things we have read, used, or tried, and would recommend:
(no affiliation with V4BL.org)
  • CAN-SPAM Act of 2003
  • FCrDNS (Forward Confirmed Reverse DNS)
  • SMTP Errors (Typical)

  • Android
  • Apache Software Foundation
  • AMD Opteron Server Processors
  • ASUS Server Motherboards
  • BlackBerry
  • Check Point
  • ColoPronto
  • DMARC
  • TheEmailADMIN
  • Google / Google AdSense
  • IID
  • InfoLink
  • Microsoft Exchange / Microsoft Server / Microsoft Virus and Security Solution Center
  • Mozilla Aurora / Mozilla Firefox / Mozilla Thunderbird
  • MySQL
  • Navicat
  • NewEgg
  • OCZ Technology
  • OpenDNS
  • OpenOffice.org
  • PHP
  • ORF Enterprise Edition
  • PowerAdmin
  • PayPal
  • PowerDNS
  • Samsung Galaxy S3
  • ServerPronto
  • ShadowServer
  • Sprint
  • StatCounter.com
  • SUN Servers (Oracle)
  • Ubuntu
  • XFX



  • CONTACT US:
    (Please do not email us with IP removal requests without having tried the online form: v4BL.org/delist)
    Email support: Simply click on either of the green "at" symbols below.
          V4BL.ORG@GMAIL.COM   &   LIST.SUPPORT@V4BL.ORG
          (If you are going to type in our email address manually, please send to both email addresses)
    Twitter.com/v4BL Follow @v4BL
    Regular Post: P.O. Box 162756, Miami FL USA, 33116-2756

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