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Blacklist Checking and Monitoring


Email Blacklists is one of many tools that Internet Service Providers (ISPs) and email providers use to efficiently handle the processing and filtering of incoming email. When an email sender breaks too many of the rules that govern being blacklisted, they simply move that sender to their IP blacklist and when the next e-mail from their IP block or domain arrives (depending on how they’ve blocked the sender), their e-mail gets automatically rejected.

Email spam filters can subscribe to the many different email blacklists to help them check how they should treat incoming emails. Below you will see an image of an antispam administraton screen of a popular email client.

Smartermail Antispam Administration Screen

Blacklist Filtering

Can all email blacklists be checked?


No, only blacklists that are public can be checked. Many of the larger ISP's have their own internal blacklists checks they use in conjuction with public blacklists checks. There is no 100% complete blacklist monitoring checker out there for this reason. The best thing you can do subscribe to our Blacklist Monitoring Service. This way you will be notified if your domain names or IP addresses shows up on a public blacklist.

The second best thing you can do is process all email bounces, they usually have indicators of which private blacklists your IPs might be on.

You can always use our Blacklist Checker to check your Domain Names or IP addresses (Remember to check both) located here: Unlock The Inbox Blacklist Checker

How do I avoid being IP blacklisted?

That's a very good question, and no one knows all the answers; each IP blacklist checks for different requirements that will get you listed. But, there are things you can do to help avoid being blacklisted. Here are a few to get you started.

I didn't do anything wrong, why am I on an IP blacklist?


You’ll be surprised at the many different reasons that will cause this to happen. One of the more common ones is that the IP address that you were assigned was recycled and the previous owner of that IP address abused email. Other times, hackers can take advantage of you, if you have an open relay, by sending unsolicted email through your server without your knowledge. You didn't follow the Can Spam ACT and provide a mechanism for people to opt out of your emails. Too many people marked your emails as spam, you didn't sign up for email feedback loops, so you didn't know what receipents to remove from your email list, not everyone clicks the unsubscribe button, most people just click the spam button. There are many different reasons, by following the steps outlined above you will greatly reduce the chances of being added to a IP blacklist.

If I'm IP blacklisted, how do I get off?


Most of the time, you will need to contact the owner of the IP blacklist and request removal; this process can take awhile. Most blacklists providers have a website that you can check your IP's on and the detailing the removal process. Be patient and polite and always follow up and provide all the information they ask for.


Source: Unlock The Inbox
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