One of my intentions is to create a registration form and spam control wich are associated to Plesk control panel - no hMailServer.
Communication between php script and Plesk pass by API-RPC protocol. I finaly wrote packet for my version of plesk but I still have some sort of problems.
I'm looking for any person, who has acces to plesk to check compatibility and then I suppose to rewrite rosalis hmailserver plugin
...I'm so sorry for my English, but this project it's very important for me, so be patient and ask me, if you dont understand