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:
Visit the Removal Request page
for Barracuda in your web browser.
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.
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.
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.
Click the "Submit Request" button to send the request.
After filling out the form, you should receive an email back from email@example.com
when your email is delisted successfully.