How can I “train” the server to always accept email from certain correspondents?
Once you have logged into the server, use the Whitelist/Blacklist option under the Preferences tab in your Barracuda account screen to list correspondents whose email you always want to receive. To safe-list one of your correspondents, type his/her email address in the box under Allowed Email Addresses and Domains and hit the Add button. We call this training the server. If you are regularly training the server, the white-listed email address and domains will begin showing up in your Inbox instead of the Barracuda quarantine.