This process will update your SecurityGateway installation to version 6.0.0. If your SecurityGateway upgrade protection was in place as of 2019-02-12 this upgrade will be totally free and all you need to do is install it. Otherwise, this update will install SecurityGateway in 30-day trial mode and you will need to purchase a renewal to bring your registration key up to date. You can purchase a renewal from your local reseller/distributor or by visiting us at https://www.altn.com/Upgrade/ For more information on SecurityGateway visit: http://www.altn.com/Products/SecurityGateway-Email-Firewall/ To see the Release Notes detailing product changes: http://files.altn.com/SecurityGateway/Release/RelNotes_ja.htm Thank you.