Clam worked on our old server, but when we moved to Windows 2016 and upgraded from 15.x to SmarterMail Professional Version - 16.3.6795 it stopped.
127.0.0.1 is the address port 3310 (open)
188.8.131.52 for Primary DNS
The only clam.log data is from the old server. There is no clam log information on the new server.
Port 3310 is open (rule imported from old server & confirmed)
Microsoft Visual C++ Redistributable 2015 (64-bit) Installed
Microsoft Visual C++ Redistributable 2015 (32-bit) Installed