Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

The normal retention time for messages in the Outbreak Filters quarantine is configured in 
the Outbreak Filters section of each mail policy, not in the outbreak quarantine. For 
information, see 

Early Expiration—messages are forced from quarantines before the configured retention time is 
reached. This can happen when: 

The size limit for all quarantines, as defined in 

, is reached. 

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 

. 

In addition to the above scenarios, messages can be automatically removed from quarantine based on the 
result of scanning operations (outbreak filters or file analysis.) 

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 rescanned for threats. For more information, see 

.