Issue a "SHOW VERSION" command to LISTSERV.  The response should  include a line like the following:


For Windows (or other platforms using the AVS):


Virus database version:      2024-11-18 07:10:36 (1.421.348.0)


This indicates that LISTSERV is using Windows Defender Anti-Virus with signatures version 1.421.348.0, which was the version current when this document was last updated.  As time passes, you will see higher version numbers as the signatures update several times each day via Windows Update.


Note that the LISTSERV web interface will also show this information in the Server Dashboard.