How to Whitelist in Barracuda
If you're utilizing Barracuda's Email Security Gateway, you can whitelist KnowBe4 to allow our simulated phishing test emails and training notifications through to your end users. For the most up-to-date list of our IP addresses, please see this article.
Whitelisting by IP in Barracuda's Email Security Gateway
Follow these instructions to whitelist the KnowBe4 mail servers by IP address*:
- Log in to your Barracuda Email Security Gateway web interface.
- Go to the BLOCK/ACCEPT > IP Filters page.
- In the Allowed IP/Range section, enter the first KnowBe4 mail server IP in the IP/Network Address field.
- In the Netmask field, type 255.255.255.255.
The Netmask for the 220.127.116.11/26 IP range should be 255.255.255.192.
- If you'd like, add a note in the Comment field. For example, KnowBe4 Simulated Phishing IP Address.
- Click "Add" to whitelist the IP address.
- Complete steps 2 through 6 for each of the KnowBe4 IP addresses found above.
*These instructions were gathered and summarized–based on Barracuda's knowledgebase. For more information on how to whitelist in Barracuda, check out this video from Barracuda.
Barracuda Intent Analysis
You may need to whitelist us in Barracuda's Intent Analysis feature to prevent the URLs in simulated phishing tests from being altered, and potentially resulting in skewed phishing test results. Here is an article from Barracuda explaining this process:
Barracuda Sender Authentication
If you'd like to spoof your own domain in simulated phishing tests, you can exempt Trusted Forwarder IP addresses from SPF checks. Here is an article from Barracuda with more information:https://campus.barracuda.com/product/emailsecuritygateway/doc/3866643/sender-authentication
After following this article, we recommend setting up a test phishing campaign to 1-2 users to ensure your whitelisting was successful. As a last resource, we suggest reaching out to your service provider for assistance. Visit here for an email template you can send to your service provider.