Spam consists of unwanted e-mail messages, usually sent by commercial, malicious, or fraudulent entities. The antispam feature examines transmitted e-mail messages to identify spam. When the device detects a message deemed to be spam, it blocks the e-mail message or tags the e-mail message header or subject with a preprogrammed string.
Antispam filtering allows you to use both a third-party server-based spam block list (SBL) and to optionally create your own local white lists (benign) and black lists (malicious) for filtering against e-mail messages. The antispam feature is not meant to replace your antispam server, but to complement it.
For information about which devices support the features documented in this chapter, see the JUNOS Software Feature Support Reference for SRX Series and J Series Devices.
This chapter includes the following topics:
