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Trend Micro InterScan Messaging Security Virtual Appliance Administrator’s Guide Understanding Cloud Pre-Filter Policies 8-2 The Cloud Pre-Filter service offers policy-based management of your email security. The policy for a domain regulates how each filter is applied to messages sent to the domain. The following table lists the information that defines each policy. TABLE 8-1. Cloud Pre-Filter Policies SECTION DESCRIPTION Domain The domain that will be covered by the policy. With the correct routing settings, all email messages to this domain are protected by Cloud Pre-Filter. Each domain must be unique, and only one policy can be applied to a domain. Valid Recipient This setting works by comparing the list of users on your LDAP servers to a list of your users on Cloud Pre-Filter. The Cloud Pre-Filter list of your users is generated by synchronizing with your LDAP servers. Use the valid recipient check to block all email that does not have a recipient on your domain. This prevents malicious email messages and spam from reaching your network. Filter settings These settings define the following Cloud Pre-Filter filtering options: • Whether a filter is enabled or not • For filters that support this option, how each filtering criterion is applied • For filters that support this option, what filter actions to perform Destination servers Destination servers are the inbound mail servers for the domain. These servers receive messages bound for the domain after they are processed by the Cloud Pre-Filter service.
TABLE 8-1. Cloud Pre-Filter Policies SECTION DESCRIPTION Approved and blocked senders Configuring Cloud Pre-Filter • Approved Sender: Emails from approved senders bypass the Email Reputation service and antispam filters. • Blocked Sender: Emails from blocked senders are blocked immediately and never reach your network. Considerations • Each policy applies to one domain only and only one policy can be created for each domain. • A policy comprises of a domain, filtering settings, approved and blocked sender lists, and destination servers. • Review each filter type and assess whether you want to apply it to a domain before saving the policy. The following filters are enabled by default: • Email Reputation • Antivirus • Antispam Tip: Trend Micro recommends that you have the antivirus and antispam filters enabled and properly configured. Without these filters, the domain is highly vulnerable to large numbers of unwanted mail and infected messages. Creating a Cloud Pre-Filter Policy To provide email security services to a domain, create a policy for that domain. Note: If your network uses a proxy server, verify your proxy settings are correct at Administration > Proxy, before creating a Cloud Pre-Filter policy. 8-3
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TM InterScan Messaging Security Vir
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The user documentation for Trend Mi
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Trend Micro InterScan Messaging Sec
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Chapter 1 Introducing InterScan Mes
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TABLE 1-1. Main Features and Benefi
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TABLE 1-2. Types of spyware/graywar
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Log Upload for Query Introducing In
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Introducing InterScan Messaging Sec
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Getting Started Chapter 2 This chap
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Using the Online Help Getting Start
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Setting Up a Child Device Getting S
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Using Smart Search Getting Started
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Understanding Address Groups Common
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Add an individual address: Common P
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6. Click the Add button. The Add Ad
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Common Policy Objects 4. Click the
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To export an address group from an
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3. Next to List name, type a descri
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About Regular Expressions Common Po
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Common Policy Objects Each characte
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• 456abc • 56abc • 6abc • a
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Literal string and escape character
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5. Specify a digital asset definiti
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TABLE 14-1. Predefined Expressions
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TABLE 14-1. Predefined Expressions
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Common Policy Objects • Specific
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TABLE 14-2. Overview of the Keyword
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TABLE 14-2. Overview of the Keyword
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To add or modify a policy notificat
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Common Policy Objects • To: Type
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Common Policy Objects 2. Click Add
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To enable the DKIM Approved List: C
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To add domains to the Web Reputatio
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Internal Addresses Chapter 15 This
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Internal Addresses • Enter domain
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3. To add addresses manually, do th
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Internal Addresses 4. Click the Rec
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Configuring Policies Chapter 16 Thi
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Configuring Policies 3. Select Anti
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Configuring Policies 4. Select the
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Configuring the Route Configuring P
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Specifying Scanning Conditions Conf
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Antivirus rule Configuring Policies
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Other rule Configuring Policies a.
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TABLE 16-1. Regulatory Compliance T
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Configuring Policies Note: For inst
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Configuring Policies Note: If you s
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5. To add your own attachment name,
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Selecting Scanning Conditions for M
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To select recipient number scanning
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Specify actions for "Other" rules:
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Configuring Policies • Send polic
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TABLE 16-2. Intercept Settings SETT
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Configuring Policies • Insert saf
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Creating a Tag Subject Configuring
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Configuring Policies 4. In the Orde
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Encryption Settings Chapter 17 This
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Encrypting Message Traffic Encrypti
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Scanning Exceptions Chapter 18 This
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Scanning Exceptions Configuring Exc
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To set scan actions for other scann
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Scanning Exceptions Setting Scan Ac
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Existing Policies Chapter 19 This c
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To add domains to the Domain List i
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Existing Policies 4. Click Name or
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Step 4: Specify the Priority 1. Cli
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Existing Policies 4. Click Subject
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Existing Policies 16. Click Save. T
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Section 4 Monitoring the Network
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Backing Up, Restoring, and Replicat
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To export device configuration file
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To export settings: 1. Choose Admin
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Settings That Cannot Be Restored
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Backing Up, Restoring, and Replicat
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Using End-User Quarantine This chap
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To enable and configure LDAP: 1. Yo
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Using End-User Quarantine 3. Choose
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3. Select Enable access. Using End-
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Using End-User Quarantine Note: If
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Disabling EUQ Using End-User Quaran
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Chapter 28 Performing Administrativ
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To add administrator accounts: Perf
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Editing or Deleting Administrator A
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Performing Administrative Tasks If
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TABLE 28-1. LDAP Server Types LDAP
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TABLE 28-2. LDAP Server Types LDAP
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7. Select Enable proxy under Proxy
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To re-index database tables: Perfor
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Performing Administrative Tasks •
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• Trend Micro Antivirus and Conte
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Chapter 29 Using the Command Line I
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CLI Overview After you open the CLI
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configure module IMSVA adminUI enab
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configure network dns Configures DN
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configure system password enable To
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configure network route default Set
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configure service ssh enable all En
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help Displays the CLI help informat
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start task postfix drop Using the C
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stop service postfix Stops the post
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service IMSVA Starts, stops, or res
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show network Displays various IMSVA
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show service Displays the IMSVA ser
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show module IMSVA status adminUI Di
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shutdown Using the Command Line Int
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EXAMPLES: Using the Command Line In
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TABLE 29-1. Time Zone Setting Examp
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TABLE 29-1. Time Zone Setting Examp
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Modifying IMSVA Deployment Chapter
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Adding and Removing Devices This se
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Changing the Device Role from Paren
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Changing IP Addresses Modifying IMS
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Chapter 31 Updating and Rescuing th
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Updating and Rescuing the System an
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TABLE 32-2. IMSVA Ports PORT NUMBER
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TABLE 32-2. IMSVA Ports PORT NUMBER
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Email Reputation Troubleshooting, F
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End-User Quarantine Troubleshooting
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ActiveUpdate How do I roll back a p
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Troubleshooting, FAQ, and Support I
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Troubleshooting Cloud Pre-Filter Un
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• Email access to antivirus engin
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Section 6 Appendices
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