Re: [exim] a large number of domains fronted by Exim are ref…

> Which means, to anyone who understands English, that you have to have a
> pretty good reason to emit null-reverse-path mail for any reason other
> than the standards-track RFC (all of which, to my knowledge, are based on
> reverse paths of incoming messages).

It's advisable to do sender callouts with a null-reverse-path.
At the moment we do sender callouts and reject every message which can't
be verified by a callout. But by reading this thread I arrive at the
conclusion that I'll better disable all denies which are based on sender
callouts.

- oliver