If you need to determine which version number of Mail Express Server is installed, you can do so on the General Configuration page of the Mail Express Server administration portal. The version is also displayed on the Mail Express Status page. (If the Mail Express Server is not running, the version number can be viewed in the file <Installation Directory>\Version.txt.
To configure general settings
Log in to the Mail Express Server Administration Interface.
In the navigation pane, under Configuration, click General. The General Settings page appears.
Under Licensing and Registration, the Software version area displays the installed version. To go to the Mail Express Support Center Web page to see what the latest available version is, click Check Version.