What is GMS Firewall?
What are the differences between GMS Firewall and the other flavours of GMS Mail?
GMS Firewall is designed to be used in a situation where you require a mail/proxy system to protect your internal mail and web servers. Different licenses provide controlled throughput. GMS Firewall has all of the security and boundary protection features of GMS Mail but with no user accounts. You can run GMS, GMS Anti-Spam and GMS Anti-Virus on it, so you could run it as complete protection for your internal network, passing all mail, web traffic that you allow through to a mail server located internally.