Special Features:

Looks at email sender ip addresses, number of connections, message volume, recipients, and other attributes across smtp connections to identify behavior patterns consistent with security threats, then takes the appropriate action, first using traffic shaping todeter the attack and blocking the completely if the attack persists; blocks email denial of service and directory harvest attacks; uses intelligent behavior shaping to immediately place invalid email recipients on a black list, thus freeing up server; state-of-the-art network based email defense in a simple to-manage linux-based appliance

Properties:

A collection of items not having the same basic name, designed to enhance the operation of automatic data processing equipment. May include such items as disk program, automatic data processing; tape program, automatic data processing; expander card(s) and instruction manual(s).