Subject line says it all? I am using Roundcube, and every time i click on "filters" i get RC's "unable to connect to server" message.
Did you edit the plugin config for your setup or are you just using defaults? For example: $config['managesieve_host'] = 'localhost:4190'; $config['managesieve_auth_type'] = 'PLAIN'; $config['managesieve_default'] = '';