Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

 provides a basic set of guidelines or definitions for each 

of the various levels.

For more information about threat levels and outbreak rules, see 

The quarantine threat level threshold allows administrators to be more or less 
aggressive in quarantining suspicious messages. A low setting (1 or 2) is more 
aggressive and will quarantine more messages; conversely, a higher score (4 or 5) 
is less aggressive and will only quarantine messages with an extremely high 
likelihood of being malicious.

The same threshold applies to both virus outbreaks and non-virus threats, but you 
can specify different quarantine retention times for virus attacks and other threats. 
See 

 for more information.

Cisco recommends the default value of 3.

0

None

There is no risk that the message is a threat.

1

Low

The risk that the message is a threat is low.

2

Low/Medium The risk that the message is a threat is low to medium. 

It is a “suspected” threat.

3

Medium

Either the message is part of a confirmed outbreak or 
there is a medium to large risk of its content being a 
threat.

4

High

Either the message is confirmed to be part of a large 
scale outbreak or its content is very dangerous.

5

Extreme

The message’s content is confirmed to part of an 
outbreak that is either extremely large scale or large 
scale and extremely dangerous.