Symantec 10765539 Planning Guide

Symantec 10765539 - Mail Security For SMTP Manual

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  • Symantec 10765539 | Planning Guide - Page 1
    Symantec Mail Security for SMTP Planning Guide
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    Symantec Mail Security for SMTP Planning Guide The software described in this book is furnished under a trademarks of Symantec Corporation. LiveUpdate, LiveUpdate Administration Utility, Symantec AntiVirus, and Symantec Security Response are trademarks of Symantec Corporation. Other names may be
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    worldwide in a variety of languages for those customers enrolled in the Platinum Support Program ■ Advanced features, such as the Symantec Alerting Service and Technical Account Manager role, offer enhanced response and proactive security support Please visit our Web site for current information on
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    , gateway, and IP address information ■ Problem description ■ Error messages/log files ■ Troubleshooting performed prior to contacting Symantec ■ Recent software configuration changes and/or network changes Customer Service To contact Enterprise Customer Service online, go to http://www.symantec.com
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    features ...7 Functional overview 8 Architecture ...9 New features for all users 10 Changes for Symantec Mail Security for SMTP users 11 New feature names 13 Discontinued features 13 Changes for Symantec Brightmail Antispam users 13 Where to get more information 15 Planning your deployment
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    6 Contents Chapter 4 Index Understanding system requirements Hardware and software requirements 27 Minimum hardware requirements 27 Minimum software requirements 28 Reserved ports 31 Factors that affect performance 32 Hardware components that affect performance 32 Environmental factors that
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    ■ Architecture ■ New features for all users ■ Changes for Symantec Mail Security for SMTP users ■ Changes for Symantec Brightmail Antispam users ■ Where to get more information Key features Symantec Mail Security for SMTP offers enterprises an easy-to-deploy, comprehensive gateway-based email
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    filters email. Your installation can have one or many Scanners. Symantec Mail Security for SMTP runs alongside your email or groupware server(s). ■ Control Center - Deployed as a Control Center, a Symantec Mail Security for SMTP host is a Web-based configuration and administration center. Use it to
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    Introducing Symantec Mail Security for SMTP 9 Architecture Architecture Your Symantec Mail Security for SMTP installation processes a email message as follows. For the sake of discussion, our sample message passes through the Filtering Engine to the Transformation Engine without being rejected.
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    . New features for Symantec Mail Security for SMTP and Symantec Brightmail Antispam Category Threat protection features Features Improved Email Firewall Sender Authentication Improved virus protection Description Protects against directory harvest attacks, denial of service attacks, spam attacks
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    several supported LDAP synchronization for policies servers Expanded variety of actions More than two dozen actions that can be taken on messages, with and combinations many combinations of multiple actions available. Expanded mail controls SMTP connection management, support for secure email
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    servers via the Control Center. Manage reports for all servers via the Control Center. Note that many of the reporting features in SMS for SMTP 4.1 have been replaced in SMS for SMTP and customize mail filtering for each group. See the Symantec Mail Security for SMTP Administration Guide for more
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    selected Symantec Mail Security for SMTP 4.1 features and Symantec Mail Security for SMTP 5.0 features that have different names. Table 1-3 Version 4.1 to Version 5.0 Symantec Mail Security for SMTP 4.1 Symantec Mail Security for SMTP 5.0 Feature Name Feature Name Accounts Administration
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    Threat protection features Improved virus processing Outbound filtering LiveUpdate support for virus definitions, list of file types to including other items as well. See the Symantec Mail Security for SMTP Administration Guide for an updated explanation of how settings and policies interact.
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    this Planning Guide, your Symantec Mail Security for SMTP product comes with the following documentation: ■ Symantec Mail Security for SMTP Installation Guide ■ Symantec Mail Security for SMTP Administration Guide ■ Symantec Mail Security for SMTP Getting Started Symantec Mail Security also includes
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    16 Introducing Symantec Mail Security for SMTP Where to get more information
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    information about integrating Symantec Mail Security for SMTP into your network. MTA usage Symantec Mail Security for SMTP contains a Message Transfer Agent (MTA), which processes and relays messages to support filtering activities. Note: Symantec Mail Security for SMTP provides neither mailbox
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    database. SyncService lets Symantec Mail Security for SMTP re-normalize and index the data to fit the needs of Scanner, Control Center, and Spam Quarantine while minimizing impact on your directory infrastructure. LDAP SyncService supports the following LDAP servers: ■ Windows 2000 Active Directory
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    . You can then map from the old server to Symantec Mail Security for SMTP. ■ When naming Symantec Mail Security for SMTP, ensure that the name you choose does not imply its function. For example, antispam.yourdomain.com, symantec.yourdomain.com, or antivirus.yourdomain.com are not good choices
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    simplest deployment model. Symantec Mail Security for SMTP resides at the outermost gateway layer, processing inbound and outbound mail, providing Secure Email Services, and relaying mail to other relay layers or to the user-facing mail server layer. On all configured server computers, port 443 must
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    other services run behind the first gateway layer. ■ Some smaller organizations do not have dedicated gateway servers or a gateway layer. Instead, they deploy gateway servers and internal mail servers on the same computers. ■ Symantec Mail Security for SMTP cannot be installed on the server running
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    administrators to take individual Scanners offline for maintenance without incurring downtime. ■ This scenario enables load balancing of filtered mail across multiple downstream MTAs. Considerations ■ This approach requires more administrative overhead and complex networking than a basic gateway
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    Scanner hosts. As shown below, MTAs at the gateway layer accept unfiltered mail from the Internet then relay it to Symantec Mail Security for SMTP. The system filters mail from the gateway layer and relays mail to other MTAs downstream. Figure 2-3 Post-Gateway deployment Advantages ■ If you have
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    24 Planning your deployment Deployment models
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    include the message recipient as a member. For detailed descriptions of email filtering verdicts, refer to the Symantec Mail Security for SMTP Administration Guide. Notes on filtering actions When configuring email filtering, consider the following limitations: ■ All Virus verdicts except suspicious
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    important messages. See the Symantec Mail Security for SMTP Administration Guide for more information. Deployment considerations Table still counted as such in message statistics for reports. Symantec Mail Security for SMTP supports the Symantec Spam Folder Agent for Exchange using X-header markup
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    : ■ Hardware and software requirements ■ Factors that affect performance Hardware and software requirements This section gives detailed requirements for each supported platform. Minimum hardware requirements Hardware requirements vary depending on the number of email users and the amount of email
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    ■ Windows 2000 Server (SP4) ■ Windows Server 2003 (SP1) ■ Windows Server 2003, Japanese version (SP1) Mail Server/ MTA ■ Microsoft Internet Information Services (IIS) ■ Windows SMTP service The MTA included with Symantec Mail Security for SMTP relays mail to existing email servers. It does not
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    : ■ Microsoft Internet Explorer 6.0 ■ Firefox 1.5 Foldering Support Spam Folder Agent: Exchange 5.5, Exchange 2000, or Exchange Server 2003 Symantec Spam Folder Agent for Domino: Lotus Domino 5, 6, or 6.5 Exchange foldering using Spam Confidence Level: Symantec Mail Security for SMTP must be
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    Internet Explorer 6.0 ■ Firefox 1.5 Access privileges Root access using su or sudo Accounts and directories Symantec Mail Security for SMTP software runs as user mailwall in the bmi group. See the Symantec Mail Security for SMTP Installation Guide for more information. Alias Create a mail
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    The following tables list ports reserved for Symantec Mail Security for SMTP components and functions. Reserved ports are classified as ports Component or function Control Center to FTP server connection Inbound mail SMTP connection LDAP server TCP/IP connection LDAP Global Catalog connection Relay
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    Factors that affect performance The performance of Symantec Mail Security for SMTP can be affected by many factors. This section Scanner. ■ CPU (speed and type) - increase the number and speed of CPUs per server. We recommend dual Intel Xeon processors if your email traffic rate warrants it. ■ RAM
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    servers which may not be immediately accepting new email. Larger queues on disk result in reduced MTA performance. Ideally, inbound and outbound mail streams should be configured to work on separate machines. ■ Microsoft Indexing Service configuring Symantec Mail Security for SMTP affect its
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    information on configuring LDAP servers and Spam Quarantine, refer to the Symantec Mail Security for STMP Administration Guide. Data pruning - troubleshooting. You can also set logs to be expunged more frequently. ■ Message Tracking - Through message tracking, Symantec Mail Security for SMTP
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    or less. ■ LDAP server throughput - LDAP lookups for message recipients against a limited capacity LDAP server will severely impair Spam Quarantine Spam Quarantine database is stored on the Control Center, Spam Quarantine's SMTP server may slow down, causing the Scanner's delivery MTA to back up
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    36 Understanding system requirements Factors that affect performance
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    17 H hardware requirements 27, 28 help 15 how Symantec Mail Security appliances work 8 K key features 7 L LDAP compatibility 18 performance considerations 35 supported servers 18 load balancing 19 logs, performance impact 34 M mail flow 9 message filtering intra-enterprise 18 overview 25 performance
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    23 advantages 23 considerations 23 R requirements 27, 28 reserved ports 31 S Scanners 8 configuring 17 settings that affect performance 33 Spam Quarantine performance considerations 35 supported browsers 29, 30 supported LDAP servers 18 system requirements 27 T Transformation Engine 9 V verdicts 25
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Symantec Mail Security
for SMTP
Planning Guide