Symantec 10744983 - Mail Security 8320 Administration Manual

Type
Administration Manual

This manual is also suitable for

Symantec Mail Security
Administration Guide
Symantec Mail Security Administration Guide
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Copyright © 2006 Symantec Corporation.
All rights reserved.
Federal acquisitions: Commercial Software - Government Users Subject to Standard License
Terms and Conditions.
Symantec, the Symantec Logo, Brightmail, LiveUpdate, and Norton AntiVirus are trademarks
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Other names may be trademarks of their respective owners.
Symantec Mail Security is protected under U.S. Patent Nos. 6,052,709; 5,999,932; and
6,654,787.
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Select your region or language under Global Support.
Before contacting Technical Support, make sure you have satisfied the system
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at the computer on which the problem occurred, in case it is necessary to recreate
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When you contact Technical Support, please have the following information
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Additional Enterprise services
Symantec offers a comprehensive set of services that allow you to maximize your
investment in Symantec products and to develop your knowledge, expertise, and
global insight, which enable you to manage your business risks proactively.
Enterprise services that are available include the following:
These solutions provide early warning of cyber
attacks, comprehensive threat analysis, and
countermeasures to prevent attacks before they occur.
Symantec Early Warning Solutions
These services remove the burden of managing and
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Managed Security Services
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technical expertise from Symantec and its trusted
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of prepackaged and customizable options that include
assessment, design, implementation, monitoring and
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To access more information about Enterprise services, please visit our Web site
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Symantec Software License Agreement
Symantec Mail Security or SMTP
1. License:
You may:
You may not:
2. Limited Warranty:
3. Disclaimer of Damages:
4. U.S. Government Restricted Rights:
5. Export Regulation:
6. General:
7. Additional Uses and Restrictions:
Technical Support
Chapter 1 About Symantec Mail Security
Key features ................................................................................ 15
New features ............................................................................... 16
Functional overview ...................................................................... 18
Architecture ............................................................................... 19
Where to get more information ....................................................... 20
Chapter 2 Configuring system settings
Configuring certificate settings ...................................................... 23
Manage certificates ................................................................ 24
Configuring host (Scanner) settings ................................................. 25
Working with Services ............................................................. 26
HTTP proxies ........................................................................ 27
SMTP Scanner settings ........................................................... 27
Configuring Default SMTP Settings ........................................... 31
Configuring internal mail hosts ................................................ 35
Testing Scanners .......................................................................... 35
Configuring LDAP settings ............................................................. 36
Configure LDAP settings .......................................................... 37
Synchronization status information .......................................... 43
Replicating data to Scanners .......................................................... 45
Starting and stopping replication .............................................. 46
Replication status information .................................................. 46
Troubleshooting replication ..................................................... 47
Configuring Control Center settings ................................................. 48
Control Center administration .................................................. 49
Control Center certificate ......................................................... 50
Configuring, enabling and scheduling Scanner replication ............. 50
Control Center Settings ........................................................... 51
System locale ........................................................................ 52
Contents
Chapter 3 Configuring email settings
Configuring address masquerading ................................................. 53
Importing masqueraded entries ................................................ 54
Configuring aliases ...................................................................... 55
Managing aliases ................................................................... 56
Importing aliases ................................................................... 57
Configuring local domains ............................................................. 58
Importing local domains and email addresses .............................. 59
Understanding spam settings ........................................................ 60
Configuring suspected spam .................................................... 61
Choosing language identification type ....................................... 61
Software acceleration .............................................................. 62
Configuring spam settings ....................................................... 62
Configuring virus settings .............................................................. 62
Configuring LiveUpdate .......................................................... 63
Excluding files from virus scanning ........................................... 64
Configuring Bloodhound settings .............................................. 64
Configuring invalid recipient handling ............................................. 65
Configuring scanning settings ........................................................ 66
Configuring container settings .................................................. 66
Configuring content filtering settings ........................................ 67
Chapter 4 Configuring email filtering
About email filtering ..................................................................... 69
Notes on filtering actions ......................................................... 78
Multiple actions per verdict ...................................................... 79
Multiple group policies ............................................................ 81
Security risks ........................................................................ 81
About precedence ................................................................... 83
Creating groups and adding members .............................................. 84
Add or remove members from a group ........................................ 84
Assigning filter policies to a group ................................................... 87
Selecting virus policies for a group ............................................ 87
Selecting spam policies for a group ............................................ 89
Selecting compliance policies for a group .................................... 89
Enabling and disabling end user settings .................................... 90
Allowing or blocking email based on language ............................. 92
Managing Group Policies ............................................................... 92
Manage Group Policies ............................................................ 93
Creating virus, spam, and compliance filter policies ............................ 94
Creating virus policies ............................................................. 94
Creating spam policies ............................................................ 96
Contents10
Creating compliance policies .................................................... 98
Managing Email Firewall policies ................................................... 107
Configuring attack recognition ................................................ 107
Configuring sender groups ..................................................... 108
Configuring Sender Authentication ................................................ 119
Managing policy resources ........................................................... 120
Annotating messages ............................................................ 120
Archiving messages .............................................................. 122
Configuring attachment lists .................................................. 124
Configuring dictionaries ........................................................ 126
Adding and editing notifications .............................................. 128
Chapter 5 Working with Spam Quarantine
About Spam Quarantine ............................................................... 131
Delivering messages to Spam Quarantine ........................................ 132
Working with messages in Spam Quarantine for administrators .......... 132
Accessing Spam Quarantine ................................................... 132
Checking for new Spam Quarantine messages ............................ 133
Administrator message list page .............................................. 133
Administrator message details page ......................................... 135
Searching messages .............................................................. 137
Configuring Spam Quarantine ....................................................... 140
Delivering messages to Spam Quarantine from the Scanner .......... 140
Configuring Spam Quarantine port for incoming email ................ 141
Configuring Spam Quarantine for administrator-only access ........ 141
Configuring the Delete Unresolved Email setting ........................ 142
Configuring the login help ...................................................... 142
Configuring recipients for misidentified messages ...................... 142
Configuring the user and distribution list notification
digests .......................................................................... 143
Configuring the Spam Quarantine Expunger .............................. 149
Specifying Spam Quarantine message and size thresholds ............ 150
Troubleshooting Spam Quarantine ........................................... 150
Chapter 6 Working with Suspect Virus Quarantine
About Suspect Virus Quarantine .................................................... 157
Routing messages to Suspect Virus Quarantine ................................ 157
Accessing Suspect Virus Quarantine .............................................. 158
Checking for new Suspect Virus Quarantine messages ................. 158
Suspect Virus Quarantine messages page .................................. 158
Searching messages .............................................................. 160
Configuring Suspect Virus Quarantine ............................................ 162
11Contents
Configuring Suspect Virus Quarantine port for incoming
email ............................................................................ 162
Configuring the size for Suspect Virus Quarantine ...................... 163
Chapter 7 Testing Symantec Mail Security
Verifying normal delivery ............................................................ 165
Verifying spam filtering ............................................................... 165
Testing antivirus filtering ............................................................ 166
Verifying filtering to Spam Quarantine ........................................... 167
Chapter 8 Configuring alerts and logs
About alerts .............................................................................. 169
Configuring alerts ................................................................ 171
Viewing logs .............................................................................. 171
Working with logs ................................................................. 172
About logs ................................................................................. 173
Configuring logs ................................................................... 173
Chapter 9 Working with Reports
About reports ............................................................................ 177
Selecting report data to track ........................................................ 178
Choosing a report ....................................................................... 178
About charts and tables ............................................................... 188
Setting the retention period for report data ..................................... 188
Running reports ......................................................................... 189
Saving and editing Favorite Reports ............................................... 190
Running and deleting favorite reports ............................................ 190
Troubleshooting report generation ................................................ 191
No data available for the report type specified ............................ 191
Sender HELO domain or IP connection shows gateway
information ................................................................... 191
Reports presented in local time of Control Center ....................... 191
By default, data are saved for one week ..................................... 192
Processed message count recorded per message, not per
recipient ....................................................................... 192
Recipient count equals message count ...................................... 193
Deferred or rejected messages are not counted as received ............ 193
Reports limited to 1,000 rows .................................................. 193
Printing, saving, and emailing reports ............................................ 193
Print, save, or email reports .................................................... 194
Scheduling reports to be emailed ................................................... 194
Contents12
Schedule, Edit, or Delete Reports ............................................. 194
Chapter 10 Administering the system
Getting status information .......................................................... 197
Overview of system information ............................................. 198
Message status .................................................................... 198
Host details ......................................................................... 203
LDAP Synchronization .......................................................... 204
Log details .......................................................................... 204
Version Information ............................................................. 204
Scanner replication ............................................................... 205
Managing Scanners .................................................................... 205
Editing Scanners ................................................................. 205
Enabling and disabling Scanners ............................................ 206
Deleting Scanners ................................................................. 207
Administering the system through the Control Center ...................... 208
Managing system administrators ............................................ 208
Managing software licenses ................................................... 209
Administering the Control Center ................................................. 209
Starting and stopping the Control Center .................................. 209
Checking the Control Center error log ....................................... 210
Increasing the amount of information in BrightmailLog.log .......... 211
Starting and stopping UNIX and Windows services ........................... 213
Starting and stopping Windows services ................................... 213
Starting and stopping UNIX services ........................................ 215
Periodic system maintenance ....................................................... 215
Backing up logs data ............................................................. 216
Backing up the Spam and Virus Quarantine databases ................ 216
Maintaining adequate disk space ............................................. 219
Appendix A Integrating Symantec Mail Security with Symantec
Security Information Manager
About Symantec Security Information Manager ............................... 221
Interpreting events in the Information Manager ............................... 222
Configuring data sources ....................................................... 223
Firewall events that are sent to the Information Manager ............. 224
Definition Update events that are sent to the Information
Manager ....................................................................... 224
Message events that are sent to the Information Manager ............ 225
Administration events that are sent to the Information
Manager ....................................................................... 226
13Contents
Glossary
Index
Contents14
About Symantec Mail
Security
This chapter includes the following topics:
â–  Key features
â–  New features
â–  Functional overview
â–  Architecture
â–  Where to get more information
Key features
Symantec Mail Security offers enterprises an easy-to-deploy, comprehensive
gateway-based email security solution through the following features:
■ Antispam technology – Symantec's state-of-the-art spam filters assess and
classify email as it enters your site.
■ Antivirus technology – Virus definitions and engines protect your users from
email-borne viruses.
■ Content Compliance – These features help administrators enforce corporate
policies, reduce legal liability, and ensure compliance with regulatory
requirements.
■ Group policies and filter policies – An easy-to-use authoring tool lets
administrators create powerful, flexible ad hoc filters for users and groups.
1
Chapter
New features
The following table lists the features that have been added to this version of
Symantec Mail Security:
Table 1-1
New features for Symantec Mail Security (all users)
DescriptionFeaturesCategory
Protects against directory-harvest attacks,
denial-of-service attacks, spam attacks, and virus
attacks.
Improved email
firewall
Threat
protection
features
Protects against phishing attacks, using the Sender
Policy Framework (SPF), Sender ID, or both.
Sender
Authentication
Additional virus verdicts protect against suspected
viruses, spyware, and adware and quarantine
messages with suspicious encrypted attachments.
Email messages that may contain viruses can be
delayed in the Suspect Virus Quarantine, then
refiltered, with updated virus definitions, if available.
This feature tcan be effective in defeating virus
attacks before conventional signatures are available.
View a list of available virus-definition updates.
Improved virus
protection
Automatically detects file types without relying on
file name extensions or MIME types.
True file type
recognition for
content compliance
filtering
Inbound
and
outbound
content
controls
Scan within attachments to find keywords from
dictionaries you create or edit. Specify a number of
occurrences to look for.
Keywords filtering
within attachments,
keyword frequency
filtering
Use regular expressions to further customize filter
conditions by searching within messages and
attachments.
Regular expression
filtering
Specify conditions that result in email being sent to
an archival email address or disk location.
Support for
Enterprise Vault and
third-party archival
tools
About Symantec Mail Security
New features
16
Table 1-1
New features for Symantec Mail Security (all users) (continued)
DescriptionFeaturesCategory
Dynamic group population via any of several
supported LDAP servers
LDAP integrationFlexible
mail
management
More than two dozen actions that can be taken,
individually or in combination, on messages
Expanded variety of
actions and
combinations
SMTP connection management, including support for
secure email (TLS encryption, with security level
depending on platform); for user-based routing and
static routes; for address masquerading, invalid
recipient handling, and control over delivery-queue
processing
Expanded mail
controls
Distribution lists automatically expanded, mail
filtered and delivered correctly for each user
Aliasing
More than 50 graphical reports that you can generate
ad-hoc or on a scheduled basis. Reports can be
exported for offline analysis and emailed.
Extensive set of
pre-built reports,
scheduled reporting,
and additional alert
conditions
Improved
reporting
and
monitoring
View a trail of detailed information about a message,
including the filtering processing applied to a
message.
Message tracking
Control which hosts and networks can access your
Control Center.
IP-based access
control
Expanded
administration
capabilities
Specify user-based and total limits, configure
automatic message deletions.
Control over
Quarantine size
limits
Support for double-byte character sets.
Language autodetection of messages for Quarantine
and of subject encodings for message handling.
Support for non-ASCII LDAP source descriptions.
Support for
non-ASCII character
sets
Enhanced
localization
capabilities
17About Symantec Mail Security
New features
Functional overview
You can deploy Symantec Mail Security in different configurations to best suit
the size of your network and your email processing needs.
Each Symantec Mail Security host can be deployed in the following ways:
Deployed as a Scanner, a Symantec Mail Security host filters email
for viruses, spam, and noncompliant messages. You can deploy
Scanners on exisiting email or groupware server(s).
Scanner
Deployed as a Control Center, a Symantec Mail Security host allows
you to configure and manage email filtering, SMTP routing, system
settings, and all other functions from a Web-based interface.
Multiple Scanners can be configured and monitored from your
enterprise-wide deployment of Symantec Mail Security, but only
one Control Center can be deployed to administer all the Scanner
hosts.
The Control Center provides information on the status of all
Symantec Mail Security hosts in your system, including system
logs and extensive customizable reports. Use the Control Center
to configure both system-wide and host-specific details.
The Control Center provides the Setup Wizard, for initial
configuration of all Symantec Mail Security instances at your site,
and also the Add Scanner Wizard, for adding new Scanners.
The Control Centrer also hosts the Spam and Suspect Virus
Quarantines to isolate and store spam and virus messages,
respectively. End users can view their quarantined spam messages
and set their preferences for language filtering and blocked and
allowed senders. Alternatively, you can configure Spam Quarantine
for administrator-only access.
Control Center
A single Symantec Mail Security host performs both functions.Scanner and Control
Center
Note: Symantec Mail Security provides neither mailbox access for end users nor
message storage. It is not intended for use as the only MTA in your email
infrastructure.
About Symantec Mail Security
Functional overview
18
Note: Symantec Mail Security does not filter messages that don't flow through
the SMTP gateway. For example, when two mailboxes reside on the same MS
Exchange Server, or on different MS Exchange Servers within an Exchange
organization, their messages will not pass through the Symantec Mail Security
filters.
Architecture
Figure 1-1 shows how a Symantec Mail Security installation processes an email
message, assuming the sample message passes through the Filtering Engine to
the Transformation Engine without being rejected.
Figure 1-1
Symantec Mail Security architecture
Messages proceed through the installation in the following way:
â–  The incoming connection arrives at the inbound MTA via TCP/IP.
19About Symantec Mail Security
Architecture
â–  The inbound MTA accepts the connection and moves the message to its inbound
queue.
â–  The Filtering Hub accepts a copy of the message for filtering.
â–  The Filtering Hub consults the LDAP SyncService directory to expand the
message's distribution list.
â–  The Filtering Engine determines each recipient's filtering policies.
â–  The message is checked against Blocked/Allowed Senders Lists defined by
administrators.
â–  Virus and configurable heuristic filters determine whether the message is
infected.
â–  Content Compliance filters scan the message for restricted attachment types,
regular exessions, or keywords as defined in configurable dictionaries.
â–  Spam filters compare message elements with current filters published by
Symantec Security Response to determine whether the message is spam. At
this point, the message may also be checked against end-user defined Language
settings.
â–  The Transformation Engine performs actions per recipient based on filtering
results and configurable Group Policies.
Where to get more information
The Symantec Mail Security documentation set consists of the following manuals:
â–  Symantec Mail Security Administration Guide
â–  Symantec Mail Security Planning Guide
â–  Symantec Mail Security Installation Guide
â–  Symantec Mail Security Getting Started
Symantec Mail Security also includes a comprehensive help system that contains
conceptual and procedural information.
You can visit the Symantec Web site for more information about your product.
The following online resources are available:
www.symantec.com/enterprise/supportProvides access to the technical support Knowledge
Base, newsgroups, contact information, downloads,
and mailing list subscriptions
About Symantec Mail Security
Where to get more information
20
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Symantec 10744983 - Mail Security 8320 Administration Manual

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