Product manual

GFI MailEssentials 3 Installation | 42
Action Description
Add GFI MailEssentials
scanning engines to the
Windows DEP Exception
List.
Data Execution Prevention (DEP) is a set of hardware and software technologies that
perform memory checks to help prevent malicious code from running on a system.
If you installed GFI MailEssentials on an operating system that includes DEP, you will
need to add the GFI MailEssentials scanning engine (GFiScanM.exe) and the Kaspersky
Virus Scanning Engine (kavss.exe) executables.
NOTE
This is required only when installing on Microsoft
®
Windows Server 2003 SP 1 or SP
2.
For more information, refer to Add engines to the Windows DEP Exception List (page 42).
Launch GFI MailEssentials
Configuration
Go to Start > Programs > GFI MailEssentials > GFI MailEssentials Configuration.
EnableDirectoryHarvesting Directory harvesting attacks occur when spammers try to guess email addresses by
attaching well known usernames to your domain. The majority of the email addresses
are non-existent. This filter is enabled by default if GFI MailEssentials is installed in an
Active Directory Environment. For more information, refer to Directory Harvesting (page
107).
Enable Greylist The Greylist filter temporarily blocks incoming emails received from unknown senders.
Legitimate mail systems typically try to send the email after a few minutes; spammers
simply ignore such error messages. This filter is not enabled by default. For more
information, refer to Greylist (page 119).For more information, refer to Greylist (page
119).
ConfigureWhitelists The Whitelist contains lists of criteria that identify legitimate email. Emails that match
these criteria are not scanned by anti-spam filters and are always delivered to the
recipient. For more information, refer to Whitelist (page 130).
Test your installation After configuring all post-install actions, GFI MailEssentials is ready to start protecting
and filtering your mail system from malicious and spam emails. Test your installation to
ensure that GFI MailEssentials is working properly.
For more information, refer to Test your installation (page 43).
3.5.1 Add engines to the Windows DEP Exception List
Data Execution Prevention (DEP) is a set of hardware and software technologies that perform memory
checks to help prevent malicious code from running on a system.
If you installed GFI MailEssentials on an operating system that includes DEP, you will need to add the
GFI MailEssentials scanning engine (GFiScanM.exe) and the Kaspersky Virus Scanning Engine
(kavss.exe) executables.
NOTE
This is required only when installing on Microsoft
®
Windows Server 2003 SP 1 or SP 2.
To add the GFI executables in the DEP exception list:
1. From Control Panel open the System applet.
2. From the Advanced tab, under the Performance area, click Settings.
3. Click Data Execution Prevention tab.
4. Click Turn on DEP for all programs and services except those I select.
5. Click Add and from the dialog box browse to: <GFI MailEssentials installation
path>\GFI\MailEssentials\EmailSecurity, and choose GFiScanM.exe.