ClamAV 3310 Errors in Delivery Logs

This article applies to recent versions of SmarterMail. View articles for SmarterMail 15.x and earlier.
The steps below can help When experiencing ClamAV 3310 errors or seeing the following entries in your delivery logs:
No connection could be made because the target machine actively refused it
To solve this problem, make sure that you have the proper Microsoft 2010 C++ Redistributable Packages installed, which may or may not be available to download from Microsoft.
If you continue to experience ClamAV issues afterwards, then perform the following:
  1. Stop the SmarterMail Service
  2. Navigate to C:\Program Files (x86)\SmarterTools\SmarterMail\Service\Clam\etc
  3. Delete clamd.conf and freshclam.conf
  4. Restart the SmarterMail service
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