Which feature must be activated on a Cisco Secure Email Gateway to combat backscatter?
Refer to the exhibits. What must be done to enforce end user authentication before accessing quarantine?

Email encryption is configured on a Cisco ESA that uses CRES.
Which action is taken on a message when CRES is unavailable?
Which scenario prevents a message from being sent to the quarantine as an action in the scan behavior on Cisco ESA?
To comply with a recent audit, an engineer must configure anti-virus message handling options on the incoming mail policies to attach warnings to the subject of an email.
What should be configured to meet this requirement for known viral emails?