Sunday, July 29, 2007

URIBL Blues

URIBL.com is a service that maintains a anti-spam black hole list.

According to "About us" on their site...
"URIBL lists domains that appear in spam, NOT where they were sent from. Our lists are intended to be used with antispam software to help TAG emails as spam. We do not BLOCK. If you are being blocked by someone because you are on our list, take it up with the person blocking you, not us!"

About black.uribl.com: "This lists contains domain names belonging to and used by spammers, including but not restricted to those that appear in URIs found in SPAM. This list has a goal of zero False Positives. This zone rebuilds frequently as new data is added."

On June 15th, 2007, microwiz.net, which belongs to me and is non-commercial as of today, was listed in black.uribl.com. URIBL was contacted requesting to provide evidence of spam but the request was denied by Mr. Alex Broens, indicating that the site (microwiz.net) being blank was in suspicious NS and no other information was given. After a few email transactions with Mr. Broens, it was deduced that that the URIBL service was using manual controls. Probably it induced human errors. Although the domain was de-listed because of incapacity of proving that the site microwiz.net did engage in emitting spam but no evidence was provided, why the site microwiz.net was listed in the RBL.

Listing innocent site microwiz.net indicates that the goal of zero false positives is not being adhered to. There maybe more innocent sites listed in black.uribl.com that I don't know about.

Conclusion:
  • URIBL will list your site if it is parked or blank!!
  • No evidence will be provided as they are "not in feedback loop"
  • There will be human errors in listings as the submission controls are manual.
  • Decisions whether to list the site or not *can* be biased as it is processed by human brain
  • Inoscent sites can and may be listed
  • Expect indescent phrases / remarks like "WTF?" when communicating with uribl staff

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