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Why am I receiving an error when running a test to the Barracuda Email Security Service that looks like "couldn't set from: 550 5.7.1"?

  • Type: Knowledgebase
  • Date changed: one year ago
Solution #00005632

This solution applies to the Barracuda Email Security Service.


You may receive this error when testing the connection to the Encryption Service from the IP Configuration page:

Loading encryption key...
Error performing SMTP test: Could't set FROM: 550 5.7.1 <encryption_test+119755+1307656151+0+RKflxF9ct ...>: Sender address rejected: BAD SIGNATURE

This is due to the encryption key being incorrect. Please contact Barracuda Technical Support.