Editing Anti-spam techniques (section)

===Outbound spam protection===
Outbound spam protection involves scanning email traffic as it exits a network, identifying spam messages and then taking an action such as blocking the message or shutting off the source of the traffic. While the primary impact of [[Spam (electronic)|spam]] is on spam recipients, sending networks also experience financial costs, such as wasted bandwidth, and the risk of having their IP addresses blocked by receiving networks.

Outbound spam protection not only stops spam, but also lets system administrators track down spam sources on their network and remediate them&nbsp;– for example, clearing malware from machines which have become infected with a [[Computer virus|virus]] or are participating in a [[botnet]].