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How to install and configure GFI MailEssentials on a Windows SBS 2003

Configuring GFI MailEssentials for Anti-Spam

4. Configuring Directory Harvesting

Some spammers use a known email address to generate spam email addresses. The Directory Harvesting stops these types of attacks by blocking emails addressed to users that do not exist on the organizations Active Directory or email server. By default, Use native Active Directory lookups is enabled. It is a good idea to set Block if non-existent recipient equal or exceed to 2 or lager to avoid mistyped email addresses or users no longer employed within the company. You can test the settings by clicking the Test tab to make sure it works.

5. Configuring Custom Blacklist

To block any emails from which you never wish to receive emails, you may want to add them to the Custom Blacklist. You can add * to block an entire domain as we discussed in Configuring Whitelist.