ClamAV Antivirus error in Plesk: Failed to start [email protected]: Unit not found.

Symptoms

• ClamAV cannot be started in Plesk in Extensions > Plesk Email Security with the following error:

  PLESK_ERROR: Execution filemng has failed with exit code 5, stdout: , stderr: Failed to start [email protected]: Unit not found.

• The Atomic repository is enabled on the server:

  # yum repolist enabled | grep atomic
  *atomic: www4.atomicorp.com
  atomic/7/x86_64 CentOS / Red Hat Enterprise Linux 7 - atomic 930

Cause

Incorrect ClamAV package is installed from Atomic repository.

Resolution

1. Login to Plesk.
2. Remove Plesk Email Security extension under: Plesk > Extensions > Plesk Email Security > More > Remove:
   
   
3. Connect to the server via SSH.
4. Find and remove the ClamAV package with the following commands:

   # rpm -qa | grep clamd
   clamd-0.102.3-13765.el7.art.x86_64

   # yum remove clamd-0.102.3-13765.el7.art.x86_64

5. Disable the Atomic repository:

   # yum-config-manager –disable atomic

6. Reinstall Plesk Email Security under Plesk > Extensions > Plesk Email Security > Get it Free: