Barracuda Blacklist. What Is It, and How to Remove Yourself.

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Removing IPs from the Barracuda blocklist can be a simple task or a complex one, depending on how your IP was added to the blocklist in the first place.

In this blog, we'll walk you through the steps for removing your IP from the Barracuda blocklist.

What Is the Barracuda Blacklist?

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Barracuda Blacklist is an online blacklist service provided by Barracuda Networks that stops suspicious emails from being delivered to an inbox.

It is designed to protect email recipients from malicious emails and other threats that can cause significant damage to a company or a person.

This kind of list is known as the Domain Name System blocklist (DNSBL).

The Barracuda Blacklist is a real-time database that is constantly updated, making it one of the most reliable sources of information available to companies.

How Does the Barracuda Blacklist Work?

The Barracuda Reputation System determines an IP address' reputation. The IP addresses that are sending spam are automatically added by the Barracuda Reputation system to the Barracuda Reputation Block List (BRBL).

After receiving a message, the system examines the connection to assess whether the host is an open relay or a node in a spam-sending botnet. If so, the Barracuda Reputation Block List is promptly updated to include the connecting host's IP address.

Barracuda Central also keeps a database of "bad" URLs in addition to IP address reputation, allowing it to instantly block emails containing one of these URLs.

The spam filter can easily distinguish between spam and legitimate messages by using both the IP and URL reputation data. Both legitimate and spam messages.

How to Remove Yourself From the Barracuda Blacklist?

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Errors happen, and you can discover that the Barracuda blocklist now includes your sending domain or IP address.

Although it will take some effort to fix the problem, this is not a death sentence for your email deliverability. This is due to the laborious nature of the Barracuda blacklist removal process.

According to Barracuda, most IP addresses are listed as a result of directly sending spam or viruses to the Barracuda Reputation System’s detectors.

The Barracuda Reputation System detects spam by using honeypots, special addresses created to receive only spam that does not belong to any real user, and through analysis of captive spyware protocol activity.

You ended up on a blacklist due to sending a hazardous email or having ideal spam traps (honeypots) in your contact information.

If you have an email address for a honeypot, it implies that someone bought contacts or harvested emails from the internet at some point.

The following steps will help to remove your email address from the blacklist:

Step 1
Visit the Removal Request page for Barracuda in your web browser.

Step 2
Type your email server's IP address into the "Email Server IP Address" column. Consult your network administrator if you are unsure about the email server's IP address.

Step 3
Type your email address and phone number into the respective fields, then in the "Text in Image" field, type the text from the verification image.

Step 4
In the "Reason for Removal" area, specify why you want to be removed. Include any justifications you have for believing your IP address was added to the list and any requests to be taken off.

Step 5
Click the "Submit Request" button to send the request.
After filling out the form, you should receive an email back from when your email is delisted successfully.

How to Avoid the Barracuda Blacklist?

It’s no secret that a Barracuda Blacklist can hurt your online reputation and business. If you’ve been blacklisted, you know how frustrating it can be.

You must investigate and understand why your server's IP address was blacklisted in order to remove yourself from the Barracuda BlockList. If you don't, your removal effort will be ineffective.

Fortunately, there are things you can take to do to avoid being blacklisted.

Monitor Your Network

This means tracking your IP addresses and ensuring they are not used to send out spam or malicious content. You should also monitor your outgoing traffic for any suspicious activity.

If you see any unusual activity, take immediate action to address the issue.

Especially for marketers, it’s important to consider if you receive emails via opt-in forms and are theses the email addresses of the subscribers verified.

Sending a re-subscription campaign, identifying and blocking inactive users whose accounts might be used as spam traps, handling bounce emails and complaints responsibly, and never purchasing or renting email lists are all recommended.

Authentication and Encryption

Another way to avoid being blacklisted is to use authentication and encryption. This will help ensure that the emails you send are from legitimate sources.

Also, encryption will help prevent your emails from being intercepted and misused.
To further understand why your domain may be appearing on the Barracuda Blacklist, take a look below for other reasons to keep an eye for:
barracuda blacklisted infographic


Every day, millions of emails are sent from computers worldwide. Some of them might be malicious or spam in nature.

As much as we would like to believe that most people are good, the reality is that there are hundreds of thousands of malicious actors online, and some of them might be using your IP address to send out spam.

If a message comes from an IP address on the blacklist, it will not be delivered to a user's inbox. This can result in significant damage to your company's reputation.

With Warm you can make use of our automatic campaign warm up function, which ensures your deliverability stays high and keeps your emails and domains away from the Barracuda list.
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