Virtualmin Roundcube 1.2.0 managesieve plugin not working

[sparticle]

Hi I am hoping that someone can help. I am trying to get a basic Vacation/Out of Office capability in roundcube. I have enabled the managesieve plugin but get an error on accessing the filters page saying cannot connect to the managesieve server.
 
This is such a basic requirement for a mail client. users must be able to setup an autoresponder to handle out of office etc. situations. I must be missing something. I have spend the best part of a day trying to figure this out.

Can someone please enlighten me.

Cheers
Spart

[SKaero]

The managesieve plugin requires managesieve to be installed on the mail server, if its not your not going to be able to use the plugin.