Cisco Cisco Email Security Appliance C170 Mode D'Emploi

Classless Inter-Domain Routing. A convenient shorthand for describing a range 
of IP addresses within their network contexts using an arbitrary number of bits. 
Using this notation, you note the network prefix part of an address by adding a 
forward slash (/) followed by the number of bits used for the network part. Thus 
a Class C network can be described in prefix notation as 192.168.0.1/24. A 
CIDR specification of 206.13.1.48/25 would include any address in which the 
first 25 bits of the address matched the first 25 bits of 206.13.1.48.

Content-based filters used to process messages during the Per-Recipient 
Scanning phase of the work queue in the email pipeline. Content filters are 
evoked after Message filters, and act on individual splintered messages.

The detection component of the RSA data loss prevention scanning engine. A 
classifier contains a number of rules for detecting sensitive data, along with 
context rules that search for supporting data. For example, a credit card classifier 
not only requires that the message contain a string that matches a credit card 
number, but that it also contains supporting information such as an expiration 
data, a credit card company name, or an address.

A bounce that occurs within the SMTP conversation. The two types of 
conversational bounces are hard bounces and 

soft bounces

.

The amount of time, in seconds, the system will refrain from sending the 
identical alert to the user.

A bounce that occurs within the SMTP conversation. The recipient host accepts 
the message for delivery, only to bounce it at a later time.