MailMarshal's potty mouth

Interesting design philosophy from the MailMarshal email filter at work.

The filter is configured to block incoming emails that contain naughty words. When this happens, MailMarshal sends the recipient a notification message saying that a message was blocked and explaining why. In the case of naughty words, the notification says something like, "Unacceptable language: shitting (score: 5)."

Think about this. The idea is to block offensive language. The implementation, however, blocks all the innocent language, and sends only the offensive content to the recipient.

Stupid design, or deliberate subversion?