No option is available to enable sender notifications for the anti-spam service.
Environment
ClientNet, Anti-Spam
Resolution
Sender notifications are intentionally disabled for the anti-spam service due to the high likelihood of spoofed sender addresses in spam messages. Enabling these notifications could result in:
A high volume of responses sent to legitimate email addresses (also known as backscatter).
Increased risk of our servers being blacklisted by other email service providers.