ePrism User Guide - EdgeWave

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Anti-Spam Features DCC Servers The default DCC servers supplied will cover most cases and should not be changed without careful consideration. Click Edit in the DCC Servers section to configure your DCC server settings, if required. Note: You must allow a connection on UDP port 6277 on your firewall or router to allow communications with a DCC server. If this port is not available, DCC server calls will fail and slow down mail delivery. 122
STA (Statistical Token Analysis) STA (Statistical Token Analysis) STA is a sophisticated method of identifying spam based on statistical analysis of mail content. Simple text matches can lead to false positives because a word or phrase can have many meanings depending on the context. STA provides a way to accurately measure how likely any particular message is to be spam without having to specify every word and phrase. STA achieves this by deriving a measure of a word or phrase contributing to the likelihood of a message being spam. This is based on the relative frequency of words and phrases in a large number of spam messages. From this analysis, it creates a table of "discriminators" (words associated with spam) and associated measures of how likely a message is spam. When a new incoming message is received, STA analyzes the message, extracts the discriminators (words and phrases), finds their measures from the table, and aggregates these measures to produce a spam metric for the message. STA uses three sources of data to build its run-time database: • The initial tables supplied by St. Bernard based on analysis of known spam. • Tables derived from an analysis of local legitimate mail. This is referred to as "local learning" or "training". • Mail identified as "bulk" by DCC is also analyzed to provide an example of local spam. How STA Works Consider the following simple message: --------------------------------------------------------------- Subject: Get rich quick!!!! Click on http://getrichquick.com to earn millions!!!!! ---------------------------------------------------------------- STA will break the message down into the following tokens: Get rich quick!!! Click on http://getrichquick.com to 123
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M1000, M2000, M3000 ePrism User Gui
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Malformed Messages 83 Attachment Co
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APPENDIX A Using the ePrism System
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• ePrism Installation Guide — P
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ePrism Overview What’s New in ePr
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ePrism Overview ePrism Overview ePr
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ePrism Overview Virus Scanning The
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ePrism Overview HALO (High Availabi
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ePrism Overview display this inform
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ePrism Overview ePrism on the DMZ D
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ePrism Overview Malformed Content,
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ePrism Overview 22
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Administering ePrism Connecting to
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Administering ePrism • Anti-Virus
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Administering ePrism Configuring th
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Administering ePrism 4. Select the
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Administering ePrism Customizing th
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Configuring Mail Delivery Settings
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Directory Services Directory Servic
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Directory Services Directory Server
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Directory Services Directory Groups
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Directory Services • Start Time
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Directory Services Base: Searches t
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Directory Services Mirror LDAP Acco
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Directory Services Base: Searches t
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Directory Services • Search Base
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Directory Services • Directory Se
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Page 80 and 81: Configuring Email Security SMTP Mai
Page 82 and 83: Configuring Email Security Anti-Vir
Page 84 and 85: Configuring Email Security outbound
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Page 88 and 89: Configuring Email Security • Acti
Page 90 and 91: Configuring Email Security SPF (Sen
Page 92 and 93: Configuring Email Security Encrypti
Page 94 and 95: Configuring Email Security Select M
Page 96 and 97: Configuring Email Security Install
Page 98 and 99: Configuring Email Security Intermed
Page 100 and 101: Anti-Spam Features Anti-Spam Featur
Page 102 and 103: Anti-Spam Features Anti-Spam Strate
Page 104 and 105: Anti-Spam Features ePrism Anti-Spam
Page 106 and 107: Anti-Spam Features Specific Access
Page 108 and 109: Anti-Spam Features Matching Rules S
Page 110 and 111: Anti-Spam Features Email Message St
Page 112 and 113: Anti-Spam Features Select the Messa
Page 114 and 115: Anti-Spam Features Note: Although t
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Page 118 and 119: Anti-Spam Features • Reject mail
Page 120 and 121: Anti-Spam Features • Enable RBLs
Page 122 and 123: Anti-Spam Features Configuring DCC
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Page 128 and 129: Anti-Spam Features Setting Threshol
Page 130 and 131: Anti-Spam Features Note: During the
Page 132 and 133: Anti-Spam Features Uploaded — Ent
Page 134 and 135: Anti-Spam Features Troubleshooting
Page 136 and 137: Anti-Spam Features WebMail access m
Page 138 and 139: Anti-Spam Features Spam Quarantine
Page 140 and 141: Anti-Spam Features • Allow releas
Page 142 and 143: Anti-Spam Features In User Accounts
Page 144 and 145: Anti-Spam Features • Reject on un
Page 146 and 147: User Accounts and Remote Authentica
Page 162 and 163: Secure WebMail and ePrism Mail Clie
Page 170 and 171: Policy Management Policy Overview e
Page 172 and 173: Policy Management Anti-Spam Scenari
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Policy Management Enter the domain
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Policy Management Step 5: Configure
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Policy Management 176
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System Management System Status and
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System Management Current Admin and
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System Management Quarantine Manage
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System Management License Managemen
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System Management Software Updates
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System Management Reboot and Shutdo
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System Management Starting a Backup
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System Management • Backup system
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System Management Restoring from Ba
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System Management You can view the
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System Management Configuring Centr
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System Management Using the Managem
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System Management Problem Reporting
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HALO (High Availability and Load Op
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Reporting Viewing and Generating Re
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Reporting Reports that have been pr
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Reporting Click the Generate Now bu
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Reporting TABLE 1. Reporting Field
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Reporting Creating Report Filters Y
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Reporting Search Search for specifi
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Reporting Viewing the System Histor
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Reporting TABLE 2. System Database
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Reporting Disabling Reporting The r
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Monitoring System Activity Activity
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Monitoring System Activity System L
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Monitoring System Activity Configur
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Monitoring System Activity Configur
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Monitoring System Activity Alarms e
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Monitoring System Activity System A
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Troubleshooting Mail Delivery Troub
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Troubleshooting Mail Delivery Exami
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Troubleshooting Mail Delivery TABLE
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Troubleshooting Mail Delivery Netwo
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Troubleshooting Mail Delivery SMTP
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Troubleshooting Mail Delivery Trace
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Troubleshooting Mail Delivery Displ
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Using the ePrism System Console Pre
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Using the ePrism System Console 268
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Restoring ePrism to Factory Default
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Message Processing Order 23. DCC (D
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Customizing Notification and Annota
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Performance Tuning Setting Default
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Performance Tuning Maximum Number o
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Performance Tuning Number of DB Pro
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Performance Tuning 282
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SNMP MIBS TABLE 1. Memory Usage and
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SNMP MIBS Alarm Objects TABLE 5. Al
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SNMP MIBS .1.11.10.2.2 = bwProducts
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SNMP MIBS .11.4.0 = systemStats.ssS
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Third Party Copyrights and Licenses
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Default Logo 32 Default Mail Relay
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Personal Quarantine Controls 161 Pi
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V Vacation Notification 154 Very Ma
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