Release Notes for Dr.Web for Microsoft Exchange Server 9.0.0

Last updated on 31.03.2014



Dr.Web for Microsoft Exchange Server is an anti-virus plug-in designed on the basis of the latest and most advanced antivirus technologies of Doctor Web to protect corporate mail systems against viruses and spam. It flexibly integrates into the system of Microsoft Exchange Server, processes all messages and attachments dispatched to the server and neutralizes all types of viruses and malware. The plug-in checks the mail traffic for viruses, dialers, adware, hacktools, jokes and riskware.

Dr.Web for Microsoft Exchange Server performs the following functions:

Scan all incoming and outgoing messages in real-time mode

Filter and block spam, use manually compiled black and white lists of addresses

Isolate infected and suspicious objects to the Quarantine

Filter e-mail messages according to various criteria

Add accompanying text to outgoing external messages

Group clients to simplify their management

Send notifications on virus events

Log virus events in OS log and support an internal event database cmstracedb in Dr.Web CMS

Collect statistics

Support the common application settings on a distributed system of servers, including those organized in clusters

Automatically update virus databases and components of the plug-in

For Microsoft Exchange Server 2007/2010/2013, Dr.Web for Microsoft Exchange Server integrates its own transport agents into the server transport system, thus, providing Dr.Web anti-virus engine with access to the e-mails and their attachments. For the versions of Microsoft Exchange Server preceding Microsoft Exchange Server 2013, the VSAPI (the Virus Scanning Application Programming Interface developed by Microsoft for Exchange Servers) is also supported. A special component Anti-spam that integrates into the IIS (Internet Information Services) is supported for the 32-bit servers.

Dr.Web for Microsoft Exchange Server uses virus databases, which are constantly supplemented with new records to assure up-to-date protection. Also, a heuristic analyzer is used for additional protection against unknown viruses.

New Features in This Release

Application architecture update. The architecture of the application hase been revised to provide its failure-resistance and stability.

Consolidated management. Version 9.0.0 features the consolidated management of the groups of mail servers where Microsoft Exchange Server (of different versions) resides.

Dr.Web CMS. Dr.Web for Microsoft Exchange Server 9.0.0 operates on the Dr.Web CMS (Central Management Service), which supports the central configuration of application settings and components and remote administration via protected protocol HTTPS. Dr.Web CMS features an internal web server Dr.Web CMS Web Console with client authentication, thus, only the authorized administrators can access the application settings via the Administration Web Console. The  internal web server helps to facilitate the installation and configuration of the application web interfaces that are not now connected to the IIS (Internet Information Services) platform services for Microsoft Windows Server. Version 9.0.0 also features new opportunities for application troubleshooting available to the system administrators via a special web interface – CMS Administrative Console.

Dr.Web SSM service. The Dr.Web CMS platform includes a special service Dr.Web SSM (Dr.Web Start/Stop Manager) to control the operation of the applications and responds to abnormal events, e.g., hand-ups or unexpected stops.  In case errors occur during the operation of the application, the Dr.Web SSM service either restarts or reloads it. This service allows to remotely start, stop or restart the applications working under the Dr.Web CMS platform.


To install Dr.Web for Microsoft Exchange Server 9.0.0, your computer must meet the following minimum requirements:

Hardware requirements




For Microsoft Exchange Server 2003:

Pentium 133 MHz (733 MHz recommended)

For Microsoft Exchange Server 2007/2010/2013:

Intel processor that supports Intel 64 architecture

AMD processor that supports the AMD64 platform


For Microsoft Exchange Server 2003:

512 MB or more

For Microsoft Exchange Server 2007/2010:

2 GB or more

For Microsoft Exchange Server 2013:

4 GB or more

Disk space

For Microsoft Exchange Server 2003/2007/2010:

512 MB

For Microsoft Exchange Server 2013:

1 GB


VGA-compatible monitor

Operating system and software requirements



Operating system

For Microsoft Exchange Server 2003:

Microsoft® Windows Server® 2003 Standard, Enterprise or Datacenter edition with SP1 or higher

For Microsoft Exchange Server 2007/2010:

Microsoft® Windows Server® 2003 R2 x64 with SP2

Microsoft® Windows Server®  2008 x64

Microsoft® Windows Server®  2008 R2

For Microsoft Exchange Server 2013:

Microsoft® Windows Server®  2012

Microsoft® Windows Server®  2008 R2

File system

For Microsoft Exchange Server 2003:


For Microsoft Exchange Server 2007/2010/2013:


Microsoft Exchange Server

For Microsoft Exchange Server 2003:

Microsoft® Exchange Server 2003 Standard or Enterprise edition

For Microsoft Exchange Server 2007/2010:

Microsoft® Exchange Server 2007 x64 with SP1

Microsoft® Exchange Server 2010 x64

For Microsoft Exchange Server 2013:

Microsoft® Exchange Server 2013

Microsoft® Exchange Server 2013 with SP1 (installing Cumulative Update 5 or running Exchange2013-KB2938053-Fixit script is required).


Installation of Dr.Web for Microsoft Exchange Server 9.0.0

Before installation it is strongly recommended to perform the following actions:

To install all critical updates released by Microsoft for the OS version used on your computer (available on the company’s updating website at

To check the file system with the system utilities and remove the detected defects.

To close all active applications.



If you are using Microsoft Exchange Server 2013 with SP1, but without Cumulative Update 5, it is recommended to run the Exchange2013-KB2938053-Fixit script available on the Microsoft official web site at before installation to prevent errors of registering the transport agents during the installation.


To install Dr.Web for Microsoft Exchange Server, perform the following actions:

1.If another version of Dr.Web for Microsoft Exchange Server or other anti-virus software is already installed on the computer it is necessary to uninstall it using the installation file or standard tools of the OS.

2.Run the installation file drweb-900-exchange-plugin-x64.exe if you are using Microsoft Exchange Server 2007/2010/2013 or drweb-900-exchange-plugin-x86.exe for previous versions of Exchange server. The InstallShield Wizard will open on the first window of the installation process.

3.To continue installation you should read and accept the terms of the License Agreement by selecting I accept the terms in the License Agreement. Click Next.

4.Stop the Microsoft Exchange Transport service (only if you are using Microsoft Exchange Server 2007/2010/2013). To do this, click Open the list of services link, right-click the service in the list and then click Stop. Once the service is stopped, click Next.



Stopping Microsoft Exchange Transport service manually is required to preserve the installation integrity on the server operating under load.

In some cases  Microsoft Exchange Transport service may take considerable time to stop!


5.Select the licensing type. You can register your license later or specify the path to the valid license key file. Click Next.

6.Before starting the installation procedure, click Installation parameters to configure the following parameters:

Install transport agents - allows to install transport agents (enabled by default). If you are using Microsoft Exchange Server 2007/2010/2013, enabling this option registers the DRWTransportAgent.dll library and its transport agents (anti-virus and anti-spam) by Microsoft Exchange Transport service. If you are using Microsoft Exchange Server of previous versions, enabling this option registers the DrWebSink.dll library and enables the anti-sapm agent in Microsoft Internet Information Services (IIS).

Install VSAPI - allows to install the  DrWebVSAPI.dll component for scanning via VSAPI (not supported in Microsoft Exchange Server 2013) provided by Microsoft Exchange Information Store service. If this option is enabled, you can also configure additional parameters: enable scanning of the outgoing messages, proactive and background scanning.

You can also enable the transport agents installation and registration monitoring by selecting the Enable transport agents monitoring option. During the installation on Microsoft Exchange Server 2007/2010/2013, transport agents are registered by Exchange PowerShell, which does not close automatically, so you will need to enter the exit command manually to complete installation.

Click Next.

7.If you are re-installing the application, you may use the saved configuration (if the corresponding option was selected during its removal) or delete it and re-configure the application after installation. Click Next.

8.The installation of Dr.Web for Microsoft Exchange Server on your computer will start. By default, program files are copied to %Program Files%\DrWeb for Exchange and %Program Files%\Common Files\Doctor Web folders. the event logs and auxiliary files are copied to %Program Data%\Doctor Web folder.

9.If you selected the Enable transport agents monitoring option when configuring thee installation parameters, you need to exit the monitoring window after the transport agents are installed and registered. Enter the exit command in PowerShell. The «Dr.Web AntiVirus Agent enabled» and «Dr.Web AntiSpam Agent enabled» messages in PowerShell indicate the successful agents registration by Microsoft Exchange Transport service. Enter the exit command in PowerShell.

10.Once the installation is complete, click Finish.



If Microsoft Exchange POP3 or Microsoft Exchange IMAP4 service do not operate correctly after Dr.Web for Microsoft Exchange Server is installed on the computer, it is recommended to restart them.

When you install the application from the drweb-900-exchange-plugin-x86.exe file, you will be prompted to restart the computer. If you install the plug-in form the drweb-900-exchange-plugin-x64.exe file, the restart is not required: the Microsoft Exchange Transport service is started automatically, resulting the correct operation of the server. However, if the POP3 and IMAP4 supporting services are running on the server, restarting the Microsoft Exchange Transport service may disconnect them from the server transport system. In this case it is recommended to wait until Microsoft Exchange Transport and the installed application services are  started and then to restart the Microsoft Exchange POP3 and/or Microsoft Exchange IMAP4 services manually (or to restart the computer).


Upgrade to version 9.0.0

To update Dr.Web for Microsoft Exchange Server to version 9.0.0, you need to delete the previous version of the plug-in installed on your compter and then install Dr.Web for Microsoft Exchange Server 9.0.0 following the procedure described above.

Additional Information

Support is available to customers who have purchased a commercial version of Doctor Web products. Visit Doctor Web technical support site at

If you encounter any issues installing or using company products, take advantage of the following Doctor Web support options:

Download and review the latest manuals and guides at

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Fill in the web-form in the corresponding section of the support site at

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