Users have been complaining of a higher volume of emails containing profanity.

Message filter and content filter are two filters that should be configured to address this issue. Message filter and content filter are rules that allow Cisco ESA to perform actions on messages based on predefined or custom conditions, such as headers, envelope, body, attachments, etc.

To reduce the number of inappropriate emails containing profanity, the network administrator can create a dictionary that contains a list of profane words or phrases and use it as a condition in a message filter or content filter that applies an action of “drop”, “quarantine”, or “modify subject” on the matching messages.

The other options are not valid filters to address this issue, because they do not use dictionaries or conditions based on message content.

References: User Guide for AsyncOS 15.0 for Cisco Secure Email Gateway, page 8-3 and page 8-7.