Good as this is a serious problem for us and Nabble seemed to have taken a step backwards with it.
Just to clarifry what we need is auto deletion of posts sent by people who have not subscribed to our email list, to which Nabble is integrated. If we can auto email the rejectees the reason too - i.e. 'subscribe to the email list please', that will help.
What I don't want to do (and won't be doing) is to have to manually add everyone (700 people approxc) who is already subscribed to our email list to your proposed authorisation list. In fact I don't really see the point of an authorised list, I can't envisage circumstances in which we would authorise posters who have not subscribed to our email list.
On Nabble 2 it is a bit like the last 'embedded enhancement' - we were very happy with what we had, why would we want to change. If it aint broke don't fix it. Incidentally I never found out if I did change skins etc to embedded, I thought I did but it kept asking me and always prefixed it with "if you haven't already..". If you don't know I don't.