> It turns out the folks at lunarpages.com barely know they run
> Exim as they use a hosting management product called cPanel
> (www.cpanel.net) which generates their exim.conf for them,
> and it doesn't seem to offer them any way to accept bounce
> messages. Even its feature to whitelist a given sender doesn't work.
I don't know what you've been looking at, but the default Exim config
provided by cPanel accepts bounces just fine. As for the "whitelist
feature", there isn't one.
- Mark