Skip to content

Unsubscore / Lashback Details (ubl.unsubscore.com)

ubl.unsubscore.com

Summary

Status: Active
Terms: Free
Zones: 1
Website: blacklist.lashback.com/
Removal: blacklist.lashback.com/
Lookup: blacklist.lashback.com/

Background

ubl.unsubscore.com, whose parent company is LashBack uses what is called an unsubscribe intelligence database for the creation and maintenance of it’s DNS blacklist. LashBack has been in operation since 2003. Spammers deploy what are known as suppression lists, also known as unsubscribe forms. When a spam is sent with a link to unsubscribe you address from the mailing, your address should in theory be removed. Often times, the opposite happens, and your address is then considered more valuable, and resold to other spammers as a known deliverable address.

ubl.unsubscore.com has systems in place that will use trackable email addresses to unsubscribe from the suppressions lists. Over time, they can track which suppressions lists are good, and which are actually sharing their suppression lists with other spammers. When this type of activity is apparent, the IP address of the sender is added to the DNS blacklist.

Listing criteria

LashBack uses 4 criteria when monitoring unsubscribe compliance.

  1. Which senders fail to provide a working unsubscribe mechanism
  2. Which senders do not honor unsubscribe requests within 10 business days
  3. Which senders allow consumers unsubscribe request to be abused (i.e., shared with other parties to send more spam)
  4. Which senders are taking suppression lists from other organizations and sending email to these lists

Criteria 1, 2, and 3 are used for internal purposes, as well as research. The data from criteria 1 through 3 can usually be obtains by making a request to LashBack’s support system. Only criteria 4 is used for the moderation of the actual DNS blacklist.

Zones

ubl.unsubscore.com

Like all other DNS blacklists, to use the LashBack DNSBL, a query is made against ubl.unsubscore.com. The criteria are to send in the reverse IP of the sending server, appending on the ubl.unsubscore.com zone. In the case of ubl.unsubscore.com, you will be looking for a specific response on 127.0.0.2, which means, that sender has been seen abusing unsubscribe data.

Removal Process

At this time, ubl.unsubscore.com does not give any data on the process by which you can have your IP address removed. There is however, a IP based removal form, that if your IP is listed, should have instructions on who to contact in an effort to have your IP removed. Given that ubl.unsubscore.com only lists the most egregious of offenders, removal may not be a top priority.

Related Articles

Related Articles

All
  • All
  • Easy Prey Podcast
  • General Topics
  • Home Computing
  • IP Addresses
  • Networking
  • Online Privacy
  • Online Safety
2020 Privacy, Safety, Cybersecurity Podcasts

Top 20 Cybersecurity Podcasts You Should Listen to in 2020

We’ve seen Twittersphere explode with bite-sized information security (InfoSec) news over the past few years and we’ve…

[Read More]
Managing Credit Cards

Alert! Managing Credit Cards Should be Your Focus.

Managing credit cards is the key to good credit. It's more important than low rates and credit...

[Read More]
Data Breach

Data Breaches: Why You Need to Use a Data Breach Check Tool

Using a data breach check tool is the best way to find out if you have accounts...

[Read More]

Psychopaths and Self-Protection with Mike Mandel

Most of us would not consider ourselves to be an easy target for a predator. But we…

[Read More]

Privacy by Design with Nishant Bhajaria

Data privacy has often been an after-thought in software and platform development. Data breaches have increased consumer…

[Read More]

Surviving a Romance Scam with Debby Montgomery Johnson

Many are resigned to stay silent about the pain of being scammed, but today’s guest helps empower…

[Read More]