How to whitelist Barracuda by IP address?

If you are using Barracuda’s Email Security Gateway (on-premises), follow these steps to whitelist Barracuda 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.
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