Cisco Cisco Email Security Appliance C390 사용자 가이드

Retention Time is the length of time messages are kept in a quarantine. The 
Default Action (see 

) is performed on any message in 

the quarantine once that retention time is reached. Each message has its own 
specific expiration time, displayed in the quarantine listing.

Messages are stored for the amount of time specified (Normal Expiration) unless 
they are manually processed by a mail administrator (or other user) or the size 
limit set for the quarantine is reached. If the size limit is reached, the oldest 
messages are processed (Early Expiration) and the Default Action in performed 
for each message until the size of the quarantine is again less than the size limit. 
The policy is First In First Out (FIFO). For more information about specifying 
quarantine size limits, see 

.

The expiration time on a message can be delayed (extended) via the Select Action 
menu in the various quarantine listings. Delaying the expiration of a message can 
be helpful when you need to keep specific messages in the quarantine past their 
scheduled expiration (for example, waiting for an administrator to have time to 
review the messages or for a specific anti-virus IDE to be published).

The Default Action is the action performed on messages in a quarantine when 
either of the two following circumstances occur:

Normal Expiration - the Retention Time is met for a message in the 
quarantine (see 

Early Expiration - a message is forced from the quarantine when the size limit 
for the quarantine is reached. For more on setting size limits for quarantines, 
see 

. Messages released from 

quarantine because of a queue-full condition (early expiration) can optionally 
have other operations performed on them. For more information, see 

There are two Default Actions:

Delete - the message is deleted.

Release - the message is released for delivery. Upon release, the message is 
rescanned for viruses, assuming anti-virus is enabled for that particular mail 
policy. For more information about virus scanning and messages released 
from quarantines, see 

.