Unable to install the Plesk Email Security: ERROR: Missing required additional modules: DBD::mysql

Symptoms

• Unable to install the Plesk Email Security, the error below is shown:

  ***** problem report *****
  Warning: restart service amavisd failed
  , stderr: Job for amavisd.service failed because the control process exited with err or code. See "systemctl status amavisd.service" and "journalctl -xe" for details.
  ERR [panel] Execution pleskrc has failed with exit code 1, stdout: INFO: : Service: amavisd, Action: restart
  Trying to restart service amavisd... active
  example.com systemd[1]: amavisd.service: control proces s exited, code=exited status=255
  example.com systemd[1]: Failed to start Amavisd-new is an interface between MTA and content checkers..
  example.com systemd[1]: Unit amavisd.service entered failed state.
  example.com systemd[1]: amavisd.service failed.
  ***** problem report *****

• In an attempt to execute the command from the error, the following messages are shown:

  # journalctl -xe
  Unit amavisd.service has begun starting up.
  example.com amavisd[22804]: ERROR: MISSING REQUIRED ADDITIONAL MODULES:
  example.com amavisd[22804]: DBD::mysql
  example.com amavisd[22804]: DBD::mysql

• Email is stuck is queue

Cause

The package perl-DBD-MySQL that is required for the Amavis service is missed.

Resolution

Apply one of the solutions below: