[exim] I think I figured out what the ratelimit issue is... …

I think I figured out what the ratelimit issue is. I use stunnel as a
way of providing Secure-SMTP connections from a clients computer to the
mail server. So, that would make sense now that it is seeing 127.0.0.1
as the IP. But, I would still think that being able to use
$authenticated_id would solve this problem. Can anyone please point in
the right direction of how to make use of this feature? I still have not
been able to find out where to put the ACL for ratelimit where
$authenticated_id is able to be used.