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Trend Micro Incorporated
April 2021

For example, December 21, 2017

Trend Micro™ Deep Discovery Email Inspector
5.1

NOTICE: This Readme file was current as of the date above. However, all customers are advised to check the Trend Micro website for documentation updates at http://docs.trendmicro.com.

TIP: Register online with Trend Micro within 30 days of installation to continue downloading new pattern files and product updates from the Trend Micro website. Register during installation or online at https://clp.trendmicro.com/FullRegistration?T=TM.

Contents

1. About Deep Discovery Email Inspector

2. What's New

3. Documentation Set

4. System Requirements

5. Installation or Upgrade

6. Post-Installation Configuration

7. Known Issues

8. Release History

9. Contact Information

10. About Trend Micro

11. License Agreement

1. About Deep Discovery Email Inspector

Trend Micro™ Deep Discovery Email Inspector™ stops sophisticated targeted attacks and cyber threats by scanning, simulating, and analyzing suspicious links and attachments in email messages before they can threaten your network. Designed to integrate into your existing email network topology, Deep Discovery Email Inspector can act as a Mail Transfer Agent in the mail traffic flow or as an out-of-band appliance silently monitoring your network for cyber threats and unwanted spam messages.

If available, use the 50-word description provided by Marketing.

CAUTION: These descriptions sometimes contain errors, such as word usage or grammar mistakes. If needed, edit the text before you paste it into your file. Verify that the information is current by checking with Marketing.

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2. What's New

See Chapter 1 of the Administrator's Guide or visit the following page for a list of new features and enhancements in this release:

http://docs.trendmicro.com/en-us/enterprise/deep-discovery-email-inspector-51-online-help/introduction_001/about_001.aspx

For a list of key features, see Chapter 1 of the Administrator's Guide or visit the following page:

http://docs.trendmicro.com/en-us/enterprise/deep-discovery-email-inspector-51-online-help/introduction_001/about_001/features-and-benefit.aspx

 

This section describes the new functions/features. Content can be lifted directly from the Admin Guide.

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3. Documentation Set

To download or view electronic versions of the documentation set for this product, go to http://docs.trendmicro.com

Delete the documentation that does not apply for this product.

In addition to this Readme file, the documentation set for this product includes the following:

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4. System Requirements

Include only appropriate requirements for your product.

For Enterprise agent-server products, list the size of the package that will be deployed to each agent, both 32-bit and 64-bit. This way, customers know the bandwidth requirements for remote machines.

See the Installation and Deployment Guide for a list of system requirements.

Include only appropriate requirements for your product. For Enterprise agent-server products, list the size of the package that will be deployed to each agent, both 32-bit and 64-bit. This way, customers know the bandwidth requirements for remote machines.

Example:

Size of Deployment Package

32-bit OS (i.e. Windows XP, Windows 2003...) = 100MB

64-bit OS (i.e. Windows XP, Windows 2008) = 90MB

Size of the new install package (32/64-bit) via Agent Packager Tool

MSI Package (Conventional Scan) = 100 MB

MSI Package (Smart Scan) = 90 MB

Setup Package (Conventional Scan) = 80 MB

Setup Package (Smart Scan) = 80 MB

Estimated size (in terms of bandwidth) per agent

32-bit agent total = 757 KB

64-bit agent total = 1004 KB

TIP: For Small Business agent-server products, only include estimated size (in terms of bandwidth) to reduce the complexity for customers.

If you do need to list system requirements:

List the minimum/recommended requirements for running the product. Content can be lifted directly from the Installation Guide.

Avoid writing "and above" or "later" or other text to imply that the product works with future software versions. It's impossible to validate that a product works correctly with future versions. If the system requirements that you receive from QA include "and above" or similar text, challenge them.

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5. Installation or Upgrade

Only provide step-by-step instructions if not documented or if different from the information in the Installation Guide or Getting Started Guide.

5.1 Fresh Installation

See the Quick Start Card and the Installation and Deployment Guide for fresh installation and deployment instructions.

5.2. Upgrading

Upgrade to Deep Discovery Email Inspector version5.1 if you are currently running the following versions:

Before installing this upgrade:

Back up your Deep Discovery Email Inspector configuration file from the management console. For details, see the Administrator's Guide.

You can install this upgrade using one of the following methods:

To install this upgrade manually on Deep Discovery Email Inspector:

  1. Log on to the Deep Discovery Email Inspector management console.

  2. Go to Administration > Product Updates > Firmware.

  3. Click Browse to locate the firmware installation package.

  4. Click Install.

  5. Wait for the package to upload and install.

  6. Clear your web browser's cache before logging on the management console.

  7. After installation completes, the user should re-open the management console logon screen.
    Note: Trend Micro recommends updating the scan engine and pattern files immediately after installation.

5.3. Uninstallation

The upgrade cannot be uninstalled. Contact Trend Micro Support for assistance.

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6. Post-Installation Configuration

Only provide step-by-step instructions if not documented or if different from the information in the Installation Guide or Getting Started Guide.

Explain what the customer should do after the installation. This could include additional steps, for example:

Restart the HTTP and FTP scanner services using the Control Panel.

If no further action required, write the following:

Installing this upgrade maintains all configurations and data. However, if Deep Discovery Email Inspector is using an internal Virtual Analyzer that connects to the Internet through a proxy server, you must reconfigure the proxy settings for the internal Virtual Analyzer. For details about configuring Virtual Analyzer settings, see the Administrator's Guide.

Include advice to register the product and update. Use the following boilerplate text if appropriate for your product.

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7. Known Issues

Describe things that are still not working or are causing a problem. Do not describe what caused the problem; only include the symptom the customer would have seen, and say it's been fixed.

Do not describe every known issue; describe only the major issues.

Describe how to resolve the problem or at least how to work around it if possible.

If the readme is for a beta release, review the list of issues before sending out the final readme - some of the issues may have been fixed and should no longer appear in the list.

Known issues in this release:

Example:

7.1 Scan issue(s)

a. The Manual Scan progress screen may display directories not specified as scan target.

b. Scan exclusion settings for spyware/grayware are disregarded after installation.

7.2 Citrix integration issue

When the "Client Console Access Restriction" is disabled on a Citrix server, notification messages display simultaneously in each logon session.

7.1. Unable to Receive Email Messages from Other IPv6 Subnets if "Hosts in the same address class" is Enabled

Problem: Deep Discovery Email Inspector cannot receive incoming emails messages from other IPv6 subnets if the "Hosts in the same address class" option is enabled on the Administration > Mail Settings > Limits and Exceptions screen.

7.2. Duplicate Time Value Appears on Widgets after Daylight Savings Time Changes to Standard Time

Problem: After daylight savings time changes to standard time on Deep Discovery Email Inspector, a duplicate time value appears on widgets.

7.3. Unable to Capture ISL-Encapsulated VLAN Traffic in SPAN/TAP Mode

Problem: While operating in SPAN/TAP mode, Deep Discovery Email Inspector cannot capture VLAN traffic that is encapsulated by Cisco Inter-Switch Link (ISL) protocol.

7.4. Virtual Analyzer Unable to Import Images from FTP Servers in Active Mode

Problem: Deep Discovery Email Inspector is unable to import Virtual Analyzer images from an FTP server in active mode. Deep Discovery Email Inspector security does not allow this type of connection.

Solution: Trend Micro recommends using FTP servers in passive mode, or importing the Virtual Analyzer images through another method.

7.5. Limited Support for Email Messages in Non-Standard Formats

Problem: Deep Discovery Email Inspector cannot read the subject of email messages in non-standard formats.

Solution: Trend Micro recommends only routing standard-formatted email messages. Most mail user agents cannot read email messages in non-standard formats.

7.6. Limits to Changing Time Format

Problem: Time format in the following pages cannot be changed if "Date and time format" in System Settings > Time page is changed 1) "Last updated" time of each widget in "Dashboard > Add Widgets", 2) "Last update" time in widget preview screenshot, 3) Time in email screenshot in "Detection" details, 4) "Custom range" in Detections > Sender Filtering

Solution: 1. For "Last updated" time of each widget, it was a limitation of the widget framework used in Deep Discovery Email Inspector to show time in a corresponding format. 2. For "Last update" time in the widget preview screenshot, it is not possible to be changed due to the fact that the preview screenshot is a picture. 3. For the time shown in the email screenshot, it was created by the third-party email client. It depends on locale to show proper time format, not the user-defined time format. 4. For "Custom range" in Detections > Sender Filtering , the date and time field is for both information display and data query. It is recommended not to display the time in the corresponding format.

7.7. Limitation When There Are More than 60 URLs in One Email

Problem: Some risky URLs in an email may not be rewritten to be a link redirected to blocking or warning page, even if the same URLs have been rewritten, if there are more than 60 URLs in an email.

Solution: Deep Discovery Email Inspector will at most extract 60 URLs from an email for scanning by default. If some of the URLs were scanned have a risk, they will be rewritten to a link that can redirect to a blocking or warning page. If the number of URLs in the email exceeds 60, some of URLs will not be rewritten due to the fact that they were not extracted by Deep Discovery Email Inspector.

7.8. Issue with Password-Protected Office PowerPoint 2003 Files

Problem: Deep Discovery Email Inspector cannot scan password-protected Office PowerPoint 2003 files.

Solution: The encryption of Office PowerPoint 2003 files is different from later versions, and this format cannot be decrypted.

7.9. Query Limits Based on Settings

Problem: If the user enables "Connect to Smart Protection Server for Web Reputation Services" in the "Administration > Scanning / Analysis > Other Settings > Smart Protection" page, the internal Virtual Analyzer will not run the URL block reason query, Census query or the Certified Safe Software Service query. Additionally, it will not provide Smart Feedback.

Solution: This is the configuration of the internal Virtual Analyzer. The user can either disable "Connect to Smart Protection for Web Reputation Services" in the "Administration > Scanning / Analysis > Other Settings > Smart Protection" page or enable both "Connect to Smart Protection Server for Web Reputation Services" and "Connect to global services using Smart Protection Server" in the "Administration > Scanning / Analysis > Other Settings > Smart Protection" page.

7.10. Inconsistent Risk Levels When Integrated with Deep Discovery Analyzer

Problem: When integrated with Deep Discovery Analyzer, the final risk level of a malicious URL in Deep Discovery Email Inspector is different with the risk level in Deep Discovery Analyzer.

Solution: Deep Discovery Analyzer can support several different products with varying risk levels, so for Deep Discovery Email Inspector, the risk level for malicious URLs returned by Virtual Analyzer (no matter whether either internal Virtual Analyzer or Deep Discovery Analyzer) will be downgraded one level.

7.11. Naming Issues with Duplicate Email Attachments

Problem: For the same email attachment which has a different file name, after being analyzed by Deep Discovery Analyzer, the analysis reports for the two attachments will have the same file name.

Solution: As the current specification of Deep Discovery Analyzer, it will return the cached analysis result for the same files or URLs to Deep Discovery Email Inspector.

7.12. When Logging into the Trend Micro Apex Central Web Console Using the HTTP Protocol, Single-Sign-On from Apex Central to Deep Discovery Email Inspector Will Not Work

Problem: Under the current specifications of Deep Discovery Email Inspector, Single-Sign-On from Apex Central is not supported under the HTTP protocol.

Solution: Log into the Apex Central web console using HTTPS protocol.

7.13. Display Issue When Using CLISH to Configure Default Gateway Settings

Problem: If the default gateway is configured on a network interface other than eth0 using CLISH, the web console does not display the current default gateway and DNS settings.

7.14. IP Address Display Issue with Network Services Diagnostics in Dual-Stack Network

Problem: If Web Reputation Service and Community File Reputation are unreachable using IPv4 addresses in a dual-stack network, the Administration > System Maintenance > Network Services Diagnostics screen still displays the final resolved IPv4 addresses for these services.

7.15. Analysis Performance Issue in Virtual Analyzer

Problem: When performing sandbox analysis using a Windows 10 or Windows Server 2016 image that requires higher system resources, the performance of Deep Discovery Email Inspector may be affected.

Solution: Due to the system resource requirements of Windows 10 and Windows Server 2016 environments, Trend Micro recommends you contact Technical Support to evaluate the system load capacity on Deep Discovery Email Inspector before using a Windows 10 or Windows Server 2016 sandbox environment for analysis.

7.16. Display Issue When a Message Contains Multiple Suspicious Attachments With the Same SHA1 Value

Problem: When a message contains more than one suspicious file attachment with the same SHA1 value, the Detections screen displays only one entry for the multiple file attachments.

7.17. Limitation When Connecting to a Proxy Server with Multiple HTTP Authentication Methods

Problem: When Deep Discovery Email Inspector connects to a proxy server that supports multiple HTTP authentication methods, some services (except ActiveUpdate and product license registration) may not function properly. On the Network Services Diagnostics screen, the service status becomes Unsuccessful.

7.18. Issue with Sending End-User Quarantine Digest Notifications

Problem: When the "Use SMTP server for EUQ authentication" option is enabled on the Administration > End-User Quarantine > EUQ Settings page and the "Enable EUQ digest notifications" option is enabled on the Administration > End-User Quarantine > EUQ Digest page, Deep Discovery Email Inspector may send EUQ digest notifications to email groups instead of to individual recipients. Deep Discover Email Inspector is unable to determine if quarantined messages are intended for individual recipients or a group of recipients.

Solution: On the Administration > End-User Quarantine > EUQ Settings page, select the "Use SMTP server for EUQ authentication" option and add domains that contain only individual email addresses.

7.19. Limitation When The Number of Time-of-Click Detection Logs Exceeds 10,000

Problem: When there are more than 10,000 Time-of-Click Protection logs in Deep Discovery Email Inspector, the numbers of logs displayed in the log search result and on the Time-of-Click Protection widget are not the same.

Solution: Specify the time range when performing a Time-of-Click Protection log query.

7.20. Limitation When Analyzing Password-Protected Microsoft Office Files With Macros

Problem: Deep Discovery Email Inspector does not submit password-protected Microsoft Office files with macros to Virtual Analyzer for analysis based on the "Office with Macros" file category because the Advanced Threat Scanning Engine (ATSE) cannot determine whether password-protected Office files contain macros.

7.21. Issue with E1000/E1000e Network Adaptor in VMWare for Deep Discovery Email Inspector Virtual Appliances

Problem: When you set the NICs for Deep Discovery Email Inspector virtual appliances based on the E1000/E1000e network adaptor in VMWare, data packet loss may occur due to limitation in network adaptor performance and throughput.

Solution: Select the VMXNET3 network adaptor for the virtual NICs in VMWare.

7.22. SPAN/TAP Mode Not Supported in Deep Discovery Email Inspector Virtual Appliances Installed in Microsoft Hyper-V

Problem: Due to the implementation of the Microsoft Hyper-V platform, SPAN/TAP mode is not supported in Deep Discovery Email Inspector virtual appliances installed in Microsoft Hyper-V.

7.23. Limitation When Uploading File on Microsoft Edge

Problem: When uploading the Deep Discovery Email Inspector upgrade package on Microsoft Edge, the management console may become unresponsive until the upload process is complete.

7.24. Performance Issue with Email Encryption

Problem: When you enable Email Encryption and configure policy settings to encrypt and decrypt all outgoing email messages, the performance level of Deep Discovery Email Inspector is significantly reduced.

Solution: Set up a dedicated Deep Discovery Email Inspector appliance to encrypt and decrypt outgoing email messages.

7.25. Limitation When Determining Message Direction Based on Internal Domain Settings

Problem: If the domains of a sender and recipient for an email message are in the internal domain list, Deep Discovery Email Inspector considers the message as an outbound message. Deep Discovery Email Inspector applies policies for outbound messages on this message.

Solution: Configure appropriate policies to apply on these type of messages.

7.26. New NIC Installation is Not Supported When NIC Teaming is Enabled

Problem: When NIC teaming is enabled, Deep Discovery Email Inspector does not support the installation of a new NIC on the appliance.

Solution: Before installing a new NIC on the Deep Discovery Email Inspector appliance, disable NIC teaming first. After installing the new NIC, you can re-enable NIC teaming if required.

7.27. Limitation When Configuring NIC Teaming in Tapping Mode

Problem: When Deep Discovery Email Inspector is in tapping mode, you cannot select data ports for NIC teaming.

Solution: Select other ports for NIC teaming or set Deep Discovery Email Inspector to operate in a different mode.

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8. Release History

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9. Contact Information

A license to the Trend Micro software usually includes the right to product updates, pattern file updates, and basic technical support for one (1) year from the date of purchase only. After the first year, Maintenance must be renewed on an annual basis at Trend Micro's then-current Maintenance fees.

Contact Trend Micro via fax, phone, and email, or visit our website to download evaluation copies of Trend Micro products.

http://www.trendmicro.com/us/about-us/contact/index.html

NOTE: This information is subject to change without notice.

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10. About Trend Micro

Smart, simple, security that fits

As a global leader in IT security, Trend Micro develops innovative security solutions that make the world safe for businesses and consumers to exchange digital information.

Copyright 2021, Trend Micro Incorporated. All rights reserved.

Substitute trademarks specific to your product for the %%%.

Trend Micro, the Trend Micro t-ball logo, Trend Micro Apex Central, Control Manager, Trend Micro Apex One, OfficeScan, and Deep Discovery are trademarks or registered trademarks of Trend Micro, Incorporated. All other product or company names may be trademarks or registered trademarks of their owners.

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11. License Agreement

View information about your license agreement with Trend Micro at:

http://www.trendmicro.com/us/about-us/legal-policies/license-agreements

Third-party licensing agreements can be viewed in the Deep Discovery Inspector management console by going to the Help > About screen.

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