Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

If the size limit is reached, the oldest messages, regardless of quarantine, are processed and the 
default action is performed for each message, until the size of all quarantines is again less than 
the size limit. The policy is First In First Out (FIFO). Messages in multiple quarantines will be 
expired based on their latest expiration time. 

(Optional) You can configure individual quarantines to be exempt from release or deletion 
because of insufficient disk space. If you configure all quarantines to be exempt and the disk 
space reaches capacity, messages in the quarantine will be delivered to make room for new 
messages. 

You will receive alerts at disk-space milestones. See 

You delete a quarantine that still holds messages. 

When a message is automatically removed from a quarantine, the default action is performed on that 
message. See 

. 

Daylight savings time and appliance time zone changes do not affect the retention period. 

If you change the retention time of a quarantine, only new messages will have the new expiration 
time.

If the system clock is changed, messages that should have expired in the past will expire at the next 
most appropriate time. 

System clock changes do not apply to messages that are in the process of being expired. 

The default action is performed on messages in a policy, virus, or outbreak quarantine when any situation 
described in 

There are two primary default actions:

Delete—The message is deleted.

Release—The message is released for delivery. 

Upon release, messages may be re-scanned by anti-virus or anti-spam engines. For more 
information, see 

. 

In addition, messages released before their expected retention time has passed can have additional 
operations performed on them, such as adding an X-Header. For more information, see 

Before you use quarantines, customize the settings of the default quarantines, including the Unclassified 
quarantine.