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Why does my Barracuda Spam and Virus Firewall respond with a ?451 Internal Error? after updating to 5.x or later firmwares?

  • Type: Knowledgebase
  • Date changed: 10 months ago
Solution #000006013

All Barracuda Spam and Email Security Gateway, All Firmwares

From firmware version 5.x and later, a new major revision of the Reputation Definition is required. During the initial download and installation of the new Reputation Definition the device may respond with a ?451 Internal Error? when messages are attempting to be sent to the device. Once the definition install has been completed normal operation should commence.

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