Spam project pulls plug

ORDB gives up to spam sophistication

Anti-spam blacklist service, The Open Relay Database (ORDB), has pulled the plug after five and a half years because of spammers' growing sophistication.

ORDB was designed to deal with a technique in which spammers used SMTP proxy servers to flood the internet with junk email. The project distributed a blacklist of mail servers that allowed third-party relay -- "open relays" -- and were thus liable to be used by spammers. ORDB anti-spam blacklist shuts up shop

But the list had levelled off at around 225,000 over the past year and updates have slowed to a crawl, the volunteer-run project acknowledged. "It's been a case of a long goodbye as very little work has gone into maintaining ORDB for a while," organizers said in a message this week on the project's website. "The general consensus within the team is that open relay RBLs (Real-time Blackhole Lists) are no longer the most effective way of preventing spam from entering your network."

ORDB is essentially a victim of its own success -- five years ago around 90 percent of spam was sent through open relays, and now the figure is less than one percent, due to blocking lists and to ISPs disallowing third-party relay.

While the shift has stopped one type of spam distribution, it has also caused inconvenience for users, who were once able to use open relays to, for example, connect to mail servers from different locations. Spammers haven't been deterred and generally now rely on botnets, networks of compromised PCs, to send spam.

The project said users should remove ORDB checks from mailers immediately. As a replacement the project recommended a combination of greylisting and content-based analysis, such as dspam, bmf or Spam Assassin.

Join the newsletter!

Or
Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Matthew Broersma

Techworld
Show Comments

Essentials

Mobile

Victorinox Werks Professional Executive 17 Laptop Case

Learn more >

Exec

Budget

Back To Business Guide

Click for more ›

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?