Barracuda Email Security Gateway sending "554 rejecting banned content"

Hi all,

I've got a Barracuda Email Security Gateway. I have Content Filtering set up so if the word Deanna is in the subject, the message gets blocked. The issue is, when sending a test message with the word Deanna from my Gmail account, I get a "554 rejecting banned content" message back.

Is there any way to prevent the Barracuda from sending these messages back to the original sender? If so, are there any drawbacks to preventing the Barracuda from sending a "554 rejecting banned content" message back to the original sender?

Or is this not even an issue I should worry about? Just trying to prevent backscatter the best I can.

Thanks for the help.