+++ Matt Bernstein [exim-users] <16/08/01 07:59 +0100>:
> I use a pipe transport with
> command = /usr/local/sbin/exim -f ${sender_address} ${pipe_addresses}
> ..with that being hit by my only router, and with no local_domains.
You might want to make this "exim -f <${sender_address}> to deal with cases
of null return path, I guess.
-suresh (got bitten by that when first configuring amavis for exim)