- Plesk for Linux
After installing Plesk Email Security extension, upon an attempt to configure, the following message is shown:
PLESK_ERROR: Conflicting extension installed: SpamExperts Email Security. Please uninstall it first to continue with the installation
Conflicting extensions, as they both serve basically the same purpose cannot be managed together
Choose one of the two extensions to use according to the needs.
The unnecessary extension should be removed:
How to manage Plesk extensions (install, disable, remove, update)