Spam is not just bothersome. It is often malicious. Aside from advertisements, such messages may contain fishy links. These steal sensitive data or sneak viruses onto your machine. Website owners and visitors alike benefit from anti-spam solutions. Blacklists are a way to keep spammers and phishers at bay.

Any kind of spam is easily blocked by IP. This unique identifier is assigned to every internet-connected device. Thus, nobody can reach you from a blacklisted address. Visit IP blacklistthat is a large blacklist database with millions of offenders reported so far. Today, it contains over 4.5 millionIPs, 12.5 million emails, and roughly 1.5 million sites. Here is how this system works.

Value of the Tool

Anyone can contribute to the fight against spam. There are companies that can provide comprehensive protection for users and website admins. Blacklists are effective against malicious mail and cybercriminals like phishers. On the one hand, there is a list of suspicious emails, so one can see if the sender (or their own domain) is included. At the same time, anyone can submit new entries for the common goal of spam elimination.

How Lists Are Used

First, blacklists help Internet Service Providers (ISPs) improve their own filters. IPs and domains involved in suspicious large-scale mailings are also closely monitored by Mail Abuse Prevention Systems and other entities. As users report new IP addresses continually, the general effectiveness of web defense grows.

Meanwhile, those who send large volumes of emails may see if their IP is seen as fishy. Otherwise, even the most well-crafted message will remain unread. This applies to digital marketers and any companies which advertise through mailshots.

How the System Works

The first thing which happens after you send an email is the detection of your IP. The latter is logged and used by the recipient’s mail servers to verify you as the sender. The servers establish communication with available blacklists to check your trustworthiness. If the IP or domain has been involved in dubious activity, the search returns a match.

When this happens, the message is automatically thrown into the junk. Even if its content is valuable to the recipient! Furthermore, if the system detects a string of violations, such emails never reach the destination mailbox at all.

Reporting and Checking

Your domain or IP may lose acceptance due to auto-detection or user complaints. The former is triggered by spamming software or open relay servers. Users feel outraged if they do not like your messages or do not remember signing up. Other reasons are:

  • No unsubscribe link;
  • Email overload;
  • Sending messages to so-called “spam traps”.

It is vital to use updated address lists. Hence, the benefits for companies and users are clear. These databases allow anyone to check the status of their own IP/domain. To contribute,  enter the offender’s address and leave a comment if necessary. The logic is simple, but the effects are far-reaching.

David M. Higgins II, Publisher/Editor

David M. Higgins was born in Baltimore and grew up in Southern Maryland. He has had a passion for journalism since high school. After spending many years in the Hospitality Industry he began working in...