Error when activationg Smarter Mail 13 Pro:
Error message or request description : Plesk Server Components Smarter Mail Error: Can't set component parameters:defpackagemng failed: svcServerAdminSoap12_SetRequestedSystemSettings() failed: Error code 0x803d0010. Error message: There was an error communicating with the endpoint at 'http://127.0.0.1:9998/Services/svcServerAdmin.asmx'. A connection with the server could not be established
I have also stopped IIS server and started the SmarterMail localhost service with no success.
Plesk Panel 12 supports Smartermail version up to 12 (6.8 - 12.0). Smartermail 13 is not supported yet.
Use SmarterMail of supported version.