ePrism User Guide - EdgeWave

Anti-Spam Features
ePrism Anti-Spam Controls
ePrism contains built-in anti-spam controls that have been developed to take advantage of its
extensive mail control features. ePrism provides a flexible tool for creating local exceptions,
managing whitelists and blacklists, and controlling undesirable content.
ePrism provides the following tools for controlling spam:
Locally Specified Filters
These filters can be used to define exceptions, overrides, whitelists, and blacklists. These tools
avoid the problems that result from over-reliance on automated methods. It is inevitable that some
spam will not be caught by these tools. It is also inevitable that some legitimate mail will be
classified as spam, such as mailing lists marked as "bulk".
Locally-specified filters include:
• Specific Access Patterns
• Pattern Based Message Filtering
Rules-based Tools
These tools provide automated protection. Used properly, these tools will handle the majority of
spam. These tools include:
• RBL (Realtime Blackhole Lists)
• DCC (Distributed Checksum Clearinghouse)
• STA (Statistical Token Analysis)
User-Based Options
Other anti-spam options can be enabled on a user level to allow them to create Trusted Senders
Lists to whitelist known senders, and manage their own spam quarantine area:
• Trusted Senders List
• Spam Quarantine
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