Launch the Mail Express Server administration interface. (e.g., click Start > Programs > Globalscape > Mail Express > Mail Express Admin or double-click the desktop shortcut).
Log in using the Mail Express server administrator username and password that you specified during installation of the server.
In the navigation pane, click Configuration > AV Scanning. The AV Scanning Configuration page appears.
Select the Enable content scanning check box to turn on AV scanning. The rest of the settings appear.
In the Connection Settings area, specify the Server Address, Port, and Path to the AV server.
Click Verify to ensure the settings are defined correctly and that Mail Express can connect to the AV server.
Optionally, you can Limit file scan to first <n> KB, MB, or GB, depending on the AV server requirements. Certain servers only scan the first <n> bytes of a file, so limiting the file scan means that Mail Express will only send the part of the file that is to be scanned saves processing time.
In the Response Handling area, specify whether to Block and audit on violations or Audit only and don't block the email.
Click Save to save your settings. If you leave the page without clicking Save, your changes are lost.