Renaud Allard wrote: > >> Their exchange server is (by default) setup to accept all messages to anyuser@???
> >> and then bounce the names that do not exist.
> >
> > This is default behaviour (for Exchange 2003 at least, and probably
> > earlier versions).
>
> The default behaviour for all versions is to accept everything for the
> local domains. And, AFAIK, there is no easy "MS only" way to solve this
> before 2003 version.
You can always turn on LDAP verification on your DS tree through exim. I
posted some config snippets in a previous thread:
