On 18 Jul 2005 at 15:19, Steve Burkett wrote about
"[exim] how to use :blackhole:":
| Is it possible to use :blackhole: in an ACL?
Not as such, no. :blackhole: is handled by redirect router. But
RTFM about the "discard" ACL action (which you would find by
searching for "blackhole" in spec.txt).
| If it is not possible, then is it possible to create a router/transport to
| :blackhole: an email if Exim could not verify the sender?
Sure, you can use a warn ACL stanza to add a header or set an acl_cN
macro that can be tested in a redirect router.
But it would be more straightforward to use a discard stanza in your
DATA ACL:
discard !verify = sender
- Fred