Sender verification callouts use MAIL FROM:<> for obvious reasons -- we
have to avoid a loop.
The same doesn't obviously hold for recipient verification callouts,
does it? For example...
# Deny unknown recipient at relay domain, with callout but accepting
# temporary failures (else backup MX is pointless).
deny domains = +relay_domains
!verify = recipient/defer_ok/callout=20s,random,defer_ok
message = Unknown recipient at target domain
In the case of recipient verification, there's no need to worry about
loops, surely? Can we just use the original SMTP reverse-path in our
test?
Using <> fails when the target recipient doesn't accept bounces. Note I
said target _recipient_, not host. Such as all my mailman lists:
mailman_bogus_bounces:
driver = redirect
senders = :
domains = +mailman_domains
require_files = MAILMAN_HOME/lists/$local_part/config.pck
allow_fail
data = :fail: Lists do not send messages and should not receive bounces
Is there a way to get Exim to use either the original reverse-path, or
at least <postmaster@$primary_hostname> in _recipient_ verification
callouts, instead of using <>?
--
dwmw2
