Gentlemen,
Please apply recommended scenario described in the KB5256 to resolve email issues after upgrade to 8.4.0.
Also we don't recommend you to fix issues via tools from the previous Plesk versions.
We will provide regular hotfix and inform you about it as soon as possible.
Sorry for the inconvenience.
Please apply recommended scenario described in the KB5256 to resolve email issues after upgrade to 8.4.0.
Also we don't recommend you to fix issues via tools from the previous Plesk versions.
We will provide regular hotfix and inform you about it as soon as possible.
Sorry for the inconvenience.