I begin to be happy with whitelister ... I just added :

* daemonization
* support for pidilfes.

and the deb package has now : startup script, and logcheck ignore rules.

The only bit I'd like to do, but that is really less important IMHO, is to use threads (threadpool ?) instead of the current forking model.

Another cool thing would be to support SPF. but SPF looks like complicated to me (a lot more that rbls at least) and I've not found alread implemented SPF libraries in caml. I guess I should use libspf2 and the ocaml C bindings, but I'm currently too lazy for that.