The Cybermagic of Whitelists

Before we start getting deep into the meat of this article it's important to explain some standard terminology to make sure the rest of this article makes sense.

  • An IP address is a number which identifies your location on the Internet.

  • A blacklist is a list of IP addresses which your antispam software uses to block incoming spam.

  • A whitelist is the exact opposite of a blacklist.

A whitelist is a predefined list of IP addresses that are allowed to send email to and receive email from each other. Blacklists exclude known and suspected spammers. Whitelists can be used to exclude everyone except known IP addresses. Think of it like this. A whitelist is a like having a phonebook which is owned by a small group of people who only wish to speak directly to each other. They don't want just anybody ringing them. Not only that but the entire group need to approve new phone numbers before they appear in this exclusive phonebook.

To send email to a whitelist you must be approved by the owner of the whitelist. This is a lot like the double optin systems used by legimiate ezines and mailing list owners. Whitelists are the nightclub bouncers of the virtual world - if you ain't on the list you ain't getting in. Simple but very effective.

A real world example of a whitelist would be if two companies wanted to exchange email only with each other. These companies could implement a whitelist that contained the IP address for just the two email servers that want to send email to each other. That would mean that any email coming from an IP address not on the whitelist would be returned to sender. For companies they can ensure that employees are only dealing with work related email and not chatting with their friends.

The benefits of whitelists are many but proper management of the whitelists is equally important. Misuse of whitelists will only lead to more headaches for everyone involved with missing email, irate customers and IT departments doing overtime just being the tip of the iceberg.

This article was provided courtesy of Spam-site.com which reviews and tests spam blockers for the business and end user.

Wood Dale Chicago prom limo .. Lockport Chicago limo O’Hare
In The News:

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents
Internet browsers are useful, but they can be dangerous. Clicking on malicious links can direct you to dangerous websites that steal information or infect your device.
Apple's latest iOS update introduces advanced artificial intelligence capabilities, which may be capturing and analyzing sensitive information.
Breach site confirmed 56,904,909 Hot Topic users' data leaked online. Tech expert Kurt “CyberGuy" Knutsson says the company's silence makes matters even worse.
Tech expert Kurt “CyberGuy" Knutsson discusses how an innovative Easy-Way kit turns standard strollers electric, simplifying navigation for parents.
Tech expert Kurt “CyberGuy" Knutsson talks about T-Mobile being hacked in broad cyberattack on global phone and internet companies.
Tech expert Kurt “CyberGuy" Knutsson shows you how to add, customize and manage widgets for quick access to apps and info from your iPhone home screen.
Wrong Google searches can not only compromise your device and personal data. They can also bring law enforcement to your doorstep. Hackers are targeting Google searches.
China's Shanghai Kepler Robotics has developed a new humanoid robot that can carry up to 35 pounds per hand for commercial applications across various industries
Checking your hearing has gotten easier with the new hearing test feature in AirPods Pro 2. You can take reliable hearing tests using your iPhone or iPad.
Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.
Kurt "CyberGuy" Knutsson explains how a VPN — virtual private network — works and how running it can slow down the operation of your device.
The WalkON Suit F1, an exoskeleton developed to help people with disabilities, can actually walk over to a person in a wheelchair, solving a major problem.
ClickFix, a new scam targeting computer users, is on the rise in the U.S. The scam prompts its targets to click on a link to fix a problem.
Skydweller is the world's largest unmanned solar-powered aircraft that can stay airborne for weeks, and even months, without refueling.
The U.S. government said it is investigating after People's Republic of China hackers targeted commercial telecommunications service providers in the U.S.
Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.
Scammers are using increasingly sophisticated ways to lure unsuspecting victims, and some are impersonating an email help desk or support team.
You can unsend or edit your iMessages with the latest iOS updates. Kurt the CyberGuy explains how you can save yourself some potential embarrassment.
Kurt “CyberGuy" Knutsson says there’s been a rise in cybercriminal services using hacked police and government emails to send subpoenas and data requests to U.S. companies.
Kurt “CyberGuy" Knutsson discusses how Axiom Space and luxury designer Prada are collaborating on NASA's Artemis III spacesuit design.
Voice assistants may cause confusion across devices. Tech expert Kurt “CyberGuy" Knutsson offers some solutions to fix it.
Shameless scammers trick veterans into giving personal info or cash. Tech expert Kurt “CyberGuy" Knutsson explores five common scams.
Tech expert Kurt “CyberGuy" Knutsson helps you honor our heroes with these powerful podcasts, audiobooks and documentaries this Veterans Day.

CAN-SPAM Basics

I. BACKGROUNDThe CAN-SPAM Act of 2003 (Controlling the Assault of... Read More

Stop Spam: How To Escape The Spam Hell-Hole

If you're anything like me, you're pretty sick of it,... Read More

How to Fight Back BEFORE Youre Falsely Accused of Spam

A friend of mine received a chilling email message from... Read More

Protecting Your Business From Spam

Even being as careful as possible with my email address,... Read More

The Trouble With Spam Is....

Each day we all face the same challenge. Spam. It... Read More

Block Ads, Defeat Pop-Ups, and STOP Page Hijacking

You're not alone!Who hasn't surfed the web looking for information... Read More

Kill The Messenger (Service)

You are familiar with the software applications that you run... Read More

Is Spam Affecting Your Business Email?

5 Ways Spam Is Affecting Your Business And what we... Read More

Six Tips to Get Rid of Spam Email

1. Ignore Spam EmailDo not open an unsolicited email. Spammers... Read More

Edating Readers

One of our Australian clients sent out a campaign using... Read More

How To Identify Spam

Most of us have opened our email program and found,... Read More

Three Faces of SPAM

Like everybody who will ever read this, I get spam... Read More

Spammer Stole My Email Address?

Do you get bounced, or rejected emails sent by someone... Read More

A Practical Approach to Eliminate Spam

Spam is out of control! I guess that would be... Read More

Why Your ISP Takes Bribes From Spammers

The lifeblood of the spammer is email. They need to... Read More

The Anti Spam Challenge ? Minimizing False Positives

Email is the quintessential business communication tool, so when it... Read More

What To Do When You Get Spam

When you go to your mailbox and find pieces of... Read More

The Vanishing Mail

Am I Just Being Paranoid Or Are The Robots Out... Read More

Having a Bad e MALE Day? Email, Spam, Spam and More Spam

You just sat at your desk, opened your email account... Read More

How Spammers Fool Spam Blacklists - And How to Stop Them

Effectively stopping spam over the long-term requires much more than... Read More

A War on SPAM: Attacking The Evil

As most small, medium and large businesses in this country... Read More

How to Write a Privacy Policy

A Privacy Policy can be defined as the policy under... Read More

Demand for Spam? It exists

Do you like spam? No, I'm not kidding. Everybody knows... Read More

Beware Of Spam Withdrawals

Q: I am so sick of all the spam that... Read More

What to Do to Avoid Getting Banned

How would you feel if you found a link on... Read More

Antigo wedding limo ..