Topic Last Modified: 2005-11-18

The Microsoft® Exchange Server Analyzer Tool reads the following registry entries to obtain the list of directories that have been excluded from manual file-level antivirus scanning in eTrust Antivirus from Computer Associates:

eTrust Antivirus 6.0

HKEY_LOCAL_MACHINE\Software\ComputerAssociates\InoculateIT\6.0\Job\szExcludeDirs

eTrust Antivirus 7.0

HKLM\Software\ComputerAssociates\eTrustAntivirus\CurrentVersion\Job\szExcludeDirs

The Exchange Server Analyzer also reads the following registry entry to obtain the drive letter that represents the Exchange Installable File System (IFS) drive:

HKLM\System\CurrentControlSet\Services\EXIFS\Parameters\DriveLetter

On Exchange 2000 Server, the default drive letter is M. The IFS drive is turned off by default in Exchange Server 2003.

If the Exchange Server Analyzer finds that the value for szExcludeDirs does not include the path that corresponds to the IFS drive, a warning is displayed.

eTrust Antivirus is a file-level antivirus scanning program. To determine the version of eTrust Antivirus installed on your Exchange Server computer, do the following:

1. Navigate to Start | Programs | eTrust Antivirus, and then click eTrust Antivirus to start the application.
   
   
2. On the eTrust Antivirus application menu, click Help, and then click About eTrust Antivirus.
   
   
3. Examine the Product Version field to determine the version of eTrust Antivirus.
   
   

The following issues can occur when you use file-level scanners on an Exchange Server computer:

• File-level scanners scan a file when it is used or at a scheduled interval, and may lock or quarantine an Exchange log or database file while Exchange tries to use the file. This can cause a severe failure in Exchange Server, and can also generate database errors.
  
  
• More problems can occur if you scan the drive represented by the IFS—typically drive M—with file-level scanner software.
  
  

Regardless of which file-level antivirus program that you use, you should always exclude the following files and folders from file-level scanners:

• .eml, .edb, .stm, .log, .dat and .chk files.
  
  
• The Exchange Server drive represented by the IFS. By default, this is drive M.
  
  
• Exchange databases and log files. By default, these are located in the Exchsrvr\Mdbdata folder.
  
  
• Exchange MTA files in the Exchsrvr\Mtadata folder.
  
  
• Additional log files such as the Exchsrvr\server_name.log file.
  
  
• The Exchsrvr\Mailroot virtual server folder.
  
  
• The working folder that is used to store streaming temporary files that are used for message conversion. By default, this folder is located at \Exchsrvr\MDBData, but you can configure the location.
  
  
• The temporary folder that is used with offline maintenance tools such as Eseutil.exe. By default, this folder is the location where the .exe file is run from, but you can configure the location when you run the tool.
  
  
• Site Replication Service (SRS) files in the Exchsrvr\Srsdata folder.
  
  
• Microsoft Internet Information Service (IIS) system files in the %SystemRoot%\System32\Inetsrv folder.
  
  
• IIS working files in the %SystemRoot%\IIS Temporary Compressed Files folder.
  
  

To correct this warning

For more information about using antivirus software with Exchange Server, see the following Microsoft Knowledge Base articles:

• 328841, "XADM: Exchange and Antivirus Software" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=328841)
  
  
• 823166, "Overview of Exchange Server 2003 and antivirus software" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=823166)
  
  
• 306105, "XGEN: Microsoft's Position on Antivirus Solutions for Exchange 2000" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=306105)
  
  
• 245822, "Recommendations for troubleshooting an Exchange computer with antivirus software installed" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=245822)
  
  

For a list of third-party antivirus software that is available for Exchange Server, see the Exchange Partners: Antivirus Web site (http://go.microsoft.com/fwlink/?LinkId=16226).

For more information about problems that can occur if you scan the IFS drive, see the following Knowledge Base articles:

• 298924, "XADM: Do Not Back Up or Scan Exchange 2000 Drive M" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=298924)
  
  
• 300608, "XADM: C1041737 Err Msg Displayed When You Mount Databases" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=300608)
  
  
• 299046, "XADM: Calendar Items Disappear from User's Folders" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=299046)
  
  

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