Custom Content Filters
Customize content filtering based on any combination of subject, headers, body, attachments, sender, or recipient, and apply to outbound mail. See the Outbound Settings > Content Policies page for settings. Filter actions for outbound mail include Block, Allow, Quarantine, and Encrypt.
Attachment Content Filters
All outbound messages, including those from exempt senders, go through attachment filtering. On the Outbound Settings > Content Policies page, you can select to filter text matching the entered pattern based on File Name or MIME type, and select whether to Block, Ignore, or Quarantine outbound messages. Additionally, you can select to Block, Ignore, or Quarantine attached archive files that require a password to unpack.
Message Content Filters
Enter filter patterns and select to Block, Allow, Quarantine, or Encrypt for Subject, Headers, Body, Attachments, Sender, or Recipient. Note that Header filters are applied to both the header name and content of any header, while the Subject filters only scan the contents of the Subject header. Use regular expressions as well as the following special characters:
. [ ] \ * ? $ ( ) | ^ @
When using the above special characters, you must escape each character with a backslach ("\").
Select a predefined data leakage patterns (specific to the United States) for Subject, Headers, Body, or Attachments. Select whether to Block, Quarantine, or Encrypt outbound messages based on the filter.
Predefined Filter Exceptions
Add exemptions to predefined HIPAA or Privacy content filters to prevent outbound emails that include phone number or street address items from being blocked, quarantined, or encrypted.
Image analysis techniques protect against new image variants. Image analysis is automatically configured in the Barracuda Email Security Service.