Installation instructions

GFI MailSecurity for Exchange/SMTP Installing GFI MailSecurity  35
Screenshot 27 - GFI MailSecurity accessed under IIS mode
Entering your license key after installation
The unregistered, evaluation version of GFI MailEssentials expires
after 10 days.
Screenshot 28 - License key information
When you obtain the 30-day evaluation key or the purchased licensed
key, you can enter your license key in the GFI MailSecurity 
Licensing node, without having to re-install the product.